diff --git a/CLAUDE.md b/CLAUDE.md
index 4c0fedf..200cbb5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -4,7 +4,7 @@ API Gateway + 모니터링 통합 플랫폼. 모든 서비스 사용자가 모
 
 ## 기술 스택
 - Java 17, Spring Boot 3.2.1, Spring Data JPA
-- PostgreSQL (스키마: std_snp_connection)
+- PostgreSQL (DB: snp_connection, 스키마: common)
 - Spring Security (JWT 기반 인증 예정)
 - WebFlux WebClient (Heartbeat, Gateway Proxy)
 - Springdoc OpenAPI 2.3.0 (Swagger)
diff --git a/docs/RELEASE-NOTES.md b/docs/RELEASE-NOTES.md
index 83bc788..f2a4748 100644
--- a/docs/RELEASE-NOTES.md
+++ b/docs/RELEASE-NOTES.md
@@ -6,6 +6,19 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/ko/1.0.0/).
 
 ## [Unreleased]
 
+## [2026-04-08]
+
+### 추가
+
+- JPA Entity 9개 + Repository, JWT 인증, 프론트엔드 메인 레이아웃/로그인 (#6)
+- 테넌트/사용자/서비스 CRUD API + 하트비트 스케줄러 (#7)
+- API Key AES-256-GCM 암호화, 신청→승인 워크플로우, Permission 관리 (#8)
+- API Gateway 프록시, API Key 인증 필터, 비동기 요청 로깅 (#9)
+- 대시보드 통계 (Recharts 차트 6개, 요약 카드, 30초 자동 갱신) (#10)
+- Service Status 페이지 (90일 일별 uptime, status.claude.com 스타일) (#10)
+- 테넌트별 요청/사용자 비율 통계 (#10)
+- 프론트엔드: 관리 페이지, API Key 관리, 요청 로그 검색/상세 (#7~#10)
+
 ## [2026-04-07]
 
 ### 추가
diff --git a/docs/schema/create_tables.sql b/docs/schema/create_tables.sql
new file mode 100644
index 0000000..df0af70
--- /dev/null
+++ b/docs/schema/create_tables.sql
@@ -0,0 +1,195 @@
+-- =============================================================
+-- SNP Connection Monitoring - 테이블 생성 스크립트
+-- 스키마: common
+-- =============================================================
+
+CREATE SCHEMA IF NOT EXISTS common;
+SET search_path TO common;
+
+-- -----------------------------------------------------------
+-- 1. snp_tenant (테넌트)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_tenant (
+    tenant_id       BIGSERIAL       PRIMARY KEY,
+    tenant_code     VARCHAR(50)     NOT NULL UNIQUE,
+    tenant_name     VARCHAR(200)    NOT NULL,
+    description     TEXT,
+    is_active       BOOLEAN         NOT NULL DEFAULT TRUE,
+    created_at      TIMESTAMP       NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMP       NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_snp_tenant_code ON snp_tenant (tenant_code);
+CREATE INDEX idx_snp_tenant_active ON snp_tenant (is_active);
+
+-- -----------------------------------------------------------
+-- 2. snp_user (사용자)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_user (
+    user_id         BIGSERIAL       PRIMARY KEY,
+    tenant_id       BIGINT          REFERENCES snp_tenant(tenant_id),
+    login_id        VARCHAR(100)    NOT NULL UNIQUE,
+    password_hash   VARCHAR(255)    NOT NULL,
+    user_name       VARCHAR(100)    NOT NULL,
+    email           VARCHAR(200),
+    role            VARCHAR(20)     NOT NULL DEFAULT 'USER',
+    is_active       BOOLEAN         NOT NULL DEFAULT TRUE,
+    last_login_at   TIMESTAMP,
+    created_at      TIMESTAMP       NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMP       NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_snp_user_login_id ON snp_user (login_id);
+CREATE INDEX idx_snp_user_tenant ON snp_user (tenant_id);
+CREATE INDEX idx_snp_user_role ON snp_user (role);
+
+-- -----------------------------------------------------------
+-- 3. snp_service (서비스)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_service (
+    service_id          BIGSERIAL       PRIMARY KEY,
+    service_code        VARCHAR(50)     NOT NULL UNIQUE,
+    service_name        VARCHAR(200)    NOT NULL,
+    service_url         VARCHAR(500),
+    description         TEXT,
+    health_check_url    VARCHAR(500),
+    health_check_interval INTEGER       NOT NULL DEFAULT 30,
+    health_status       VARCHAR(10)     NOT NULL DEFAULT 'UNKNOWN',
+    health_checked_at   TIMESTAMP,
+    health_response_time INTEGER,
+    is_active           BOOLEAN         NOT NULL DEFAULT TRUE,
+    created_at          TIMESTAMP       NOT NULL DEFAULT NOW(),
+    updated_at          TIMESTAMP       NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_snp_service_code ON snp_service (service_code);
+CREATE INDEX idx_snp_service_status ON snp_service (health_status);
+CREATE INDEX idx_snp_service_active ON snp_service (is_active);
+
+-- -----------------------------------------------------------
+-- 4. snp_service_health_log (서비스 헬스 로그)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_service_health_log (
+    log_id          BIGSERIAL       PRIMARY KEY,
+    service_id      BIGINT          NOT NULL REFERENCES snp_service(service_id),
+    previous_status VARCHAR(10),
+    current_status  VARCHAR(10)     NOT NULL,
+    response_time   INTEGER,
+    error_message   TEXT,
+    checked_at      TIMESTAMP       NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_snp_health_log_service ON snp_service_health_log (service_id);
+CREATE INDEX idx_snp_health_log_checked ON snp_service_health_log (checked_at);
+
+-- -----------------------------------------------------------
+-- 5. snp_service_api (서비스 API)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_service_api (
+    api_id          BIGSERIAL       PRIMARY KEY,
+    service_id      BIGINT          NOT NULL REFERENCES snp_service(service_id),
+    api_path        VARCHAR(500)    NOT NULL,
+    api_method      VARCHAR(10)     NOT NULL,
+    api_name        VARCHAR(200)    NOT NULL,
+    description     TEXT,
+    is_active       BOOLEAN         NOT NULL DEFAULT TRUE,
+    created_at      TIMESTAMP       NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMP       NOT NULL DEFAULT NOW(),
+    CONSTRAINT uq_service_api UNIQUE (service_id, api_path, api_method)
+);
+
+CREATE INDEX idx_snp_service_api_service ON snp_service_api (service_id);
+
+-- -----------------------------------------------------------
+-- 6. snp_api_key (API 키)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_api_key (
+    api_key_id      BIGSERIAL       PRIMARY KEY,
+    user_id         BIGINT          NOT NULL REFERENCES snp_user(user_id),
+    api_key         VARCHAR(128)    NOT NULL UNIQUE,
+    api_key_prefix  VARCHAR(10),
+    key_name        VARCHAR(200)    NOT NULL,
+    status          VARCHAR(20)     NOT NULL DEFAULT 'PENDING',
+    approved_by     BIGINT          REFERENCES snp_user(user_id),
+    approved_at     TIMESTAMP,
+    expires_at      TIMESTAMP,
+    last_used_at    TIMESTAMP,
+    created_at      TIMESTAMP       NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMP       NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_snp_api_key_user ON snp_api_key (user_id);
+CREATE INDEX idx_snp_api_key_key ON snp_api_key (api_key);
+CREATE INDEX idx_snp_api_key_status ON snp_api_key (status);
+
+-- -----------------------------------------------------------
+-- 7. snp_api_permission (API 권한)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_api_permission (
+    permission_id   BIGSERIAL       PRIMARY KEY,
+    api_key_id      BIGINT          NOT NULL REFERENCES snp_api_key(api_key_id),
+    api_id          BIGINT          NOT NULL REFERENCES snp_service_api(api_id),
+    is_active       BOOLEAN         NOT NULL DEFAULT TRUE,
+    granted_by      BIGINT,
+    granted_at      TIMESTAMP       NOT NULL DEFAULT NOW(),
+    revoked_at      TIMESTAMP,
+    CONSTRAINT uq_api_permission UNIQUE (api_key_id, api_id)
+);
+
+CREATE INDEX idx_snp_api_permission_key ON snp_api_permission (api_key_id);
+CREATE INDEX idx_snp_api_permission_api ON snp_api_permission (api_id);
+
+-- -----------------------------------------------------------
+-- 8. snp_api_request_log (API 요청 로그)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_api_request_log (
+    log_id          BIGSERIAL       PRIMARY KEY,
+    request_url     VARCHAR(2000),
+    request_params  TEXT,
+    request_method  VARCHAR(10),
+    request_status  VARCHAR(20),
+    request_headers TEXT,
+    request_ip      VARCHAR(45),
+    service_id      BIGINT          REFERENCES snp_service(service_id),
+    user_id         BIGINT          REFERENCES snp_user(user_id),
+    api_key_id      BIGINT          REFERENCES snp_api_key(api_key_id),
+    response_size   BIGINT,
+    response_time   INTEGER,
+    response_status INTEGER,
+    error_message   TEXT,
+    requested_at    TIMESTAMP       NOT NULL DEFAULT NOW(),
+    tenant_id       BIGINT          REFERENCES snp_tenant(tenant_id)
+);
+
+CREATE INDEX idx_snp_request_log_service ON snp_api_request_log (service_id);
+CREATE INDEX idx_snp_request_log_user ON snp_api_request_log (user_id);
+CREATE INDEX idx_snp_request_log_requested ON snp_api_request_log (requested_at);
+CREATE INDEX idx_snp_request_log_tenant ON snp_api_request_log (tenant_id);
+
+-- 대시보드 통계 쿼리 최적화 인덱스
+CREATE INDEX idx_snp_request_log_daily_stats ON snp_api_request_log (requested_at, request_status);
+CREATE INDEX idx_snp_request_log_daily_user ON snp_api_request_log (requested_at, user_id);
+CREATE INDEX idx_snp_request_log_svc_stats ON snp_api_request_log (requested_at, service_id, request_status);
+CREATE INDEX idx_snp_request_log_top_api ON snp_api_request_log (requested_at, request_url, request_method);
+-- Gateway API Key 인증 인덱스
+CREATE INDEX idx_snp_api_key_prefix ON snp_api_key (api_key_prefix);
+
+-- -----------------------------------------------------------
+-- 9. snp_api_key_request (API 키 발급 요청)
+-- -----------------------------------------------------------
+CREATE TABLE IF NOT EXISTS snp_api_key_request (
+    request_id      BIGSERIAL       PRIMARY KEY,
+    user_id         BIGINT          NOT NULL REFERENCES snp_user(user_id),
+    key_name        VARCHAR(200)    NOT NULL,
+    purpose         TEXT,
+    requested_apis  TEXT,
+    status          VARCHAR(20)     NOT NULL DEFAULT 'PENDING',
+    reviewed_by     BIGINT          REFERENCES snp_user(user_id),
+    reviewed_at     TIMESTAMP,
+    review_comment  TEXT,
+    created_at      TIMESTAMP       NOT NULL DEFAULT NOW(),
+    updated_at      TIMESTAMP       NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_snp_key_request_user ON snp_api_key_request (user_id);
+CREATE INDEX idx_snp_key_request_status ON snp_api_key_request (status);
diff --git a/docs/schema/initial_data.sql b/docs/schema/initial_data.sql
new file mode 100644
index 0000000..8c1d137
--- /dev/null
+++ b/docs/schema/initial_data.sql
@@ -0,0 +1,24 @@
+-- =============================================================
+-- SNP Connection Monitoring - 초기 데이터
+-- 스키마: common
+-- =============================================================
+
+SET search_path TO common;
+
+-- 기본 테넌트
+INSERT INTO snp_tenant (tenant_code, tenant_name, description, is_active)
+VALUES ('DEFAULT', '기본 테넌트', 'SNP Connection Monitoring 기본 테넌트', TRUE)
+ON CONFLICT (tenant_code) DO NOTHING;
+
+-- 관리자 계정 (password: admin123, BCrypt 해시)
+INSERT INTO snp_user (tenant_id, login_id, password_hash, user_name, email, role, is_active)
+VALUES (
+    (SELECT tenant_id FROM snp_tenant WHERE tenant_code = 'DEFAULT'),
+    'admin',
+    '$2b$10$res6.RkRwakcEui0XbCpOOxYzwQiT07/J0Jl4cKlMtaDZFRyDt1EC',
+    '시스템 관리자',
+    'admin@gcsc.com',
+    'ADMIN',
+    TRUE
+)
+ON CONFLICT (login_id) DO NOTHING;
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 87c8372..57ed006 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -10,7 +10,8 @@
       "dependencies": {
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
-        "react-router-dom": "^7.13.0"
+        "react-router-dom": "^7.13.0",
+        "recharts": "^3.8.1"
       },
       "devDependencies": {
         "@eslint/js": "^9.39.1",
@@ -1013,6 +1014,42 @@
         "@jridgewell/sourcemap-codec": "^1.4.14"
       }
     },
+    "node_modules/@reduxjs/toolkit": {
+      "version": "2.11.2",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@reduxjs/toolkit/-/toolkit-2.11.2.tgz",
+      "integrity": "sha512-Kd6kAHTA6/nUpp8mySPqj3en3dm0tdMIgbttnQ1xFMVpufoj+ADi8pXLBsd4xzTRHQa7t/Jv8W5UnCuW4kuWMQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@standard-schema/spec": "^1.0.0",
+        "@standard-schema/utils": "^0.3.0",
+        "immer": "^11.0.0",
+        "redux": "^5.0.1",
+        "redux-thunk": "^3.1.0",
+        "reselect": "^5.1.0"
+      },
+      "peerDependencies": {
+        "react": "^16.9.0 || ^17.0.0 || ^18 || ^19",
+        "react-redux": "^7.2.1 || ^8.1.3 || ^9.0.0"
+      },
+      "peerDependenciesMeta": {
+        "react": {
+          "optional": true
+        },
+        "react-redux": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@reduxjs/toolkit/node_modules/immer": {
+      "version": "11.1.4",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/immer/-/immer-11.1.4.tgz",
+      "integrity": "sha512-XREFCPo6ksxVzP4E0ekD5aMdf8WMwmdNaz6vuvxgI40UaEiu6q3p8X52aU6GdyvLY3XXX/8R7JOTXStz/nBbRw==",
+      "license": "MIT",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/immer"
+      }
+    },
     "node_modules/@rolldown/pluginutils": {
       "version": "1.0.0-rc.3",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/@rolldown/pluginutils/-/pluginutils-1.0.0-rc.3.tgz",
@@ -1370,6 +1407,18 @@
         "win32"
       ]
     },
+    "node_modules/@standard-schema/spec": {
+      "version": "1.1.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@standard-schema/spec/-/spec-1.1.0.tgz",
+      "integrity": "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==",
+      "license": "MIT"
+    },
+    "node_modules/@standard-schema/utils": {
+      "version": "0.3.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@standard-schema/utils/-/utils-0.3.0.tgz",
+      "integrity": "sha512-e7Mew686owMaPJVNNLs55PUvgz371nKgwsc4vxE49zsODpJEnxgxRo2y/OKrqueavXgZNMDVj3DdHFlaSAeU8g==",
+      "license": "MIT"
+    },
     "node_modules/@tailwindcss/node": {
       "version": "4.2.2",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/@tailwindcss/node/-/node-4.2.2.tgz",
@@ -1687,6 +1736,69 @@
         "@babel/types": "^7.28.2"
       }
     },
+    "node_modules/@types/d3-array": {
+      "version": "3.2.2",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-array/-/d3-array-3.2.2.tgz",
+      "integrity": "sha512-hOLWVbm7uRza0BYXpIIW5pxfrKe0W+D5lrFiAEYR+pb6w3N2SwSMaJbXdUfSEv+dT4MfHBLtn5js0LAWaO6otw==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-color": {
+      "version": "3.1.3",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-color/-/d3-color-3.1.3.tgz",
+      "integrity": "sha512-iO90scth9WAbmgv7ogoq57O9YpKmFBbmoEoCHDB2xMBY0+/KVrqAaCDyCE16dUspeOvIxFFRI+0sEtqDqy2b4A==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-ease": {
+      "version": "3.0.2",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-ease/-/d3-ease-3.0.2.tgz",
+      "integrity": "sha512-NcV1JjO5oDzoK26oMzbILE6HW7uVXOHLQvHshBUW4UMdZGfiY6v5BeQwh9a9tCzv+CeefZQHJt5SRgK154RtiA==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-interpolate": {
+      "version": "3.0.4",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-interpolate/-/d3-interpolate-3.0.4.tgz",
+      "integrity": "sha512-mgLPETlrpVV1YRJIglr4Ez47g7Yxjl1lj7YKsiMCb27VJH9W8NVM6Bb9d8kkpG/uAQS5AmbA48q2IAolKKo1MA==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/d3-color": "*"
+      }
+    },
+    "node_modules/@types/d3-path": {
+      "version": "3.1.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-path/-/d3-path-3.1.1.tgz",
+      "integrity": "sha512-VMZBYyQvbGmWyWVea0EHs/BwLgxc+MKi1zLDCONksozI4YJMcTt8ZEuIR4Sb1MMTE8MMW49v0IwI5+b7RmfWlg==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-scale": {
+      "version": "4.0.9",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-scale/-/d3-scale-4.0.9.tgz",
+      "integrity": "sha512-dLmtwB8zkAeO/juAMfnV+sItKjlsw2lKdZVVy6LRr0cBmegxSABiLEpGVmSJJ8O08i4+sGR6qQtb6WtuwJdvVw==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/d3-time": "*"
+      }
+    },
+    "node_modules/@types/d3-shape": {
+      "version": "3.1.8",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-shape/-/d3-shape-3.1.8.tgz",
+      "integrity": "sha512-lae0iWfcDeR7qt7rA88BNiqdvPS5pFVPpo5OfjElwNaT2yyekbM0C9vK+yqBqEmHr6lDkRnYNoTBYlAgJa7a4w==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/d3-path": "*"
+      }
+    },
+    "node_modules/@types/d3-time": {
+      "version": "3.0.4",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-time/-/d3-time-3.0.4.tgz",
+      "integrity": "sha512-yuzZug1nkAAaBlBBikKZTgzCeA+k1uy4ZFwWANOfKw5z5LRhV0gNA7gNkKm7HoK+HRN0wX3EkxGk0fpbWhmB7g==",
+      "license": "MIT"
+    },
+    "node_modules/@types/d3-timer": {
+      "version": "3.0.2",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/d3-timer/-/d3-timer-3.0.2.tgz",
+      "integrity": "sha512-Ps3T8E8dZDam6fUyNiMkekK3XUsaUEik+idO9/YjPtfj2qruF8tFBXS7XhtE4iIXBLxhmLjP3SXpLhVf21I9Lw==",
+      "license": "MIT"
+    },
     "node_modules/@types/estree": {
       "version": "1.0.8",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/estree/-/estree-1.0.8.tgz",
@@ -1715,7 +1827,7 @@
       "version": "19.2.14",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/react/-/react-19.2.14.tgz",
       "integrity": "sha512-ilcTH/UniCkMdtexkoCN0bI7pMcJDvmQFPvuPvmEaYA/NSfFTAgdUSLAoVjaRJm7+6PvcM+q1zYOwS4wTYMF9w==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "csstype": "^3.2.2"
@@ -1731,6 +1843,12 @@
         "@types/react": "^19.2.0"
       }
     },
+    "node_modules/@types/use-sync-external-store": {
+      "version": "0.0.6",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/@types/use-sync-external-store/-/use-sync-external-store-0.0.6.tgz",
+      "integrity": "sha512-zFDAD+tlpf2r4asuHEj0XH6pY6i0g5NeAHPn+15wk3BV6JA69eERFXC1gyGThDkVa1zCyKr5jox1+2LbV/AMLg==",
+      "license": "MIT"
+    },
     "node_modules/@typescript-eslint/eslint-plugin": {
       "version": "8.58.0",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.58.0.tgz",
@@ -2223,6 +2341,15 @@
         "url": "https://github.com/chalk/chalk?sponsor=1"
       }
     },
+    "node_modules/clsx": {
+      "version": "2.1.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/clsx/-/clsx-2.1.1.tgz",
+      "integrity": "sha512-eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/color-convert/-/color-convert-2.0.1.tgz",
@@ -2289,9 +2416,130 @@
       "version": "3.2.3",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/csstype/-/csstype-3.2.3.tgz",
       "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT"
     },
+    "node_modules/d3-array": {
+      "version": "3.2.4",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-array/-/d3-array-3.2.4.tgz",
+      "integrity": "sha512-tdQAmyA18i4J7wprpYq8ClcxZy3SC31QMeByyCFyRt7BVHdREQZ5lpzoe5mFEYZUWe+oq8HBvk9JjpibyEV4Jg==",
+      "license": "ISC",
+      "dependencies": {
+        "internmap": "1 - 2"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-color": {
+      "version": "3.1.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-color/-/d3-color-3.1.0.tgz",
+      "integrity": "sha512-zg/chbXyeBtMQ1LbD/WSoW2DpC3I0mpmPdW+ynRTj/x2DAWYrIY7qeZIHidozwV24m4iavr15lNwIwLxRmOxhA==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-ease": {
+      "version": "3.0.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-ease/-/d3-ease-3.0.1.tgz",
+      "integrity": "sha512-wR/XK3D3XcLIZwpbvQwQ5fK+8Ykds1ip7A2Txe0yxncXSdq1L9skcG7blcedkOX+ZcgxGAmLX1FrRGbADwzi0w==",
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-format": {
+      "version": "3.1.2",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-format/-/d3-format-3.1.2.tgz",
+      "integrity": "sha512-AJDdYOdnyRDV5b6ArilzCPPwc1ejkHcoyFarqlPqT7zRYjhavcT3uSrqcMvsgh2CgoPbK3RCwyHaVyxYcP2Arg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-interpolate": {
+      "version": "3.0.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-interpolate/-/d3-interpolate-3.0.1.tgz",
+      "integrity": "sha512-3bYs1rOD33uo8aqJfKP3JWPAibgw8Zm2+L9vBKEHJ2Rg+viTR7o5Mmv5mZcieN+FRYaAOWX5SJATX6k1PWz72g==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-color": "1 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-path": {
+      "version": "3.1.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-path/-/d3-path-3.1.0.tgz",
+      "integrity": "sha512-p3KP5HCf/bvjBSSKuXid6Zqijx7wIfNW+J/maPs+iwR35at5JCbLUT0LzF1cnjbCHWhqzQTIN2Jpe8pRebIEFQ==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-scale": {
+      "version": "4.0.2",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-scale/-/d3-scale-4.0.2.tgz",
+      "integrity": "sha512-GZW464g1SH7ag3Y7hXjf8RoUuAFIqklOAq3MRl4OaWabTFJY9PN/E1YklhXLh+OQ3fM9yS2nOkCoS+WLZ6kvxQ==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-array": "2.10.0 - 3",
+        "d3-format": "1 - 3",
+        "d3-interpolate": "1.2.0 - 3",
+        "d3-time": "2.1.1 - 3",
+        "d3-time-format": "2 - 4"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-shape": {
+      "version": "3.2.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-shape/-/d3-shape-3.2.0.tgz",
+      "integrity": "sha512-SaLBuwGm3MOViRq2ABk3eLoxwZELpH6zhl3FbAoJ7Vm1gofKx6El1Ib5z23NUEhF9AsGl7y+dzLe5Cw2AArGTA==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-path": "^3.1.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-time": {
+      "version": "3.1.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-time/-/d3-time-3.1.0.tgz",
+      "integrity": "sha512-VqKjzBLejbSMT4IgbmVgDjpkYrNWUYJnbCGo874u7MMKIWsILRX+OpX/gTk8MqjpT1A/c6HY2dCA77ZN0lkQ2Q==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-array": "2 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-time-format": {
+      "version": "4.1.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-time-format/-/d3-time-format-4.1.0.tgz",
+      "integrity": "sha512-dJxPBlzC7NugB2PDLwo9Q8JiTR3M3e4/XANkreKSUxF8vvXKqm1Yfq4Q5dl8budlunRVlUUaDUgFt7eA8D6NLg==",
+      "license": "ISC",
+      "dependencies": {
+        "d3-time": "1 - 3"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/d3-timer": {
+      "version": "3.0.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/d3-timer/-/d3-timer-3.0.1.tgz",
+      "integrity": "sha512-ndfJ/JxxMd3nw31uyKoY2naivF+r29V+Lc0svZxe1JvvIRmi8hUsrMvdOwgS1o6uBHmiz91geQ0ylPP0aj1VUA==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/debug/-/debug-4.4.3.tgz",
@@ -2310,6 +2558,12 @@
         }
       }
     },
+    "node_modules/decimal.js-light": {
+      "version": "2.5.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/decimal.js-light/-/decimal.js-light-2.5.1.tgz",
+      "integrity": "sha512-qIMFpTMZmny+MMIitAB6D7iVPEorVw6YQRWkvarTkT4tBeSLLiHzcwj6q0MmYSFCiVpiqPJTJEYIrpcPzVEIvg==",
+      "license": "MIT"
+    },
     "node_modules/deep-is": {
       "version": "0.1.4",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/deep-is/-/deep-is-0.1.4.tgz",
@@ -2348,6 +2602,16 @@
         "node": ">=10.13.0"
       }
     },
+    "node_modules/es-toolkit": {
+      "version": "1.45.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/es-toolkit/-/es-toolkit-1.45.1.tgz",
+      "integrity": "sha512-/jhoOj/Fx+A+IIyDNOvO3TItGmlMKhtX8ISAHKE90c4b/k1tqaqEZ+uUqfpU8DMnW5cgNJv606zS55jGvza0Xw==",
+      "license": "MIT",
+      "workspaces": [
+        "docs",
+        "benchmarks"
+      ]
+    },
     "node_modules/esbuild": {
       "version": "0.27.7",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/esbuild/-/esbuild-0.27.7.tgz",
@@ -2597,6 +2861,12 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/eventemitter3": {
+      "version": "5.0.4",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/eventemitter3/-/eventemitter3-5.0.4.tgz",
+      "integrity": "sha512-mlsTRyGaPBjPedk6Bvw+aqbsXDtoAyAzm5MO7JgU+yVRyMQ5O8bD4Kcci7BS85f93veegeCPkL8R4GLClnjLFw==",
+      "license": "MIT"
+    },
     "node_modules/fast-deep-equal": {
       "version": "3.1.3",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -2782,6 +3052,16 @@
         "node": ">= 4"
       }
     },
+    "node_modules/immer": {
+      "version": "10.2.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/immer/-/immer-10.2.0.tgz",
+      "integrity": "sha512-d/+XTN3zfODyjr89gM3mPq1WNX2B8pYsu7eORitdwyA2sBubnTl3laYlBk4sXY5FUa5qTZGBDPJICVbvqzjlbw==",
+      "license": "MIT",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/immer"
+      }
+    },
     "node_modules/import-fresh": {
       "version": "3.3.1",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/import-fresh/-/import-fresh-3.3.1.tgz",
@@ -2809,6 +3089,15 @@
         "node": ">=0.8.19"
       }
     },
+    "node_modules/internmap": {
+      "version": "2.0.3",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/internmap/-/internmap-2.0.3.tgz",
+      "integrity": "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/is-extglob": {
       "version": "2.1.1",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/is-extglob/-/is-extglob-2.1.1.tgz",
@@ -3486,6 +3775,36 @@
         "react": "^19.2.4"
       }
     },
+    "node_modules/react-is": {
+      "version": "19.2.4",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/react-is/-/react-is-19.2.4.tgz",
+      "integrity": "sha512-W+EWGn2v0ApPKgKKCy/7s7WHXkboGcsrXE+2joLyVxkbyVQfO3MUEaUQDHoSmb8TFFrSKYa9mw64WZHNHSDzYA==",
+      "license": "MIT",
+      "peer": true
+    },
+    "node_modules/react-redux": {
+      "version": "9.2.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/react-redux/-/react-redux-9.2.0.tgz",
+      "integrity": "sha512-ROY9fvHhwOD9ySfrF0wmvu//bKCQ6AeZZq1nJNtbDC+kk5DuSuNX/n6YWYF/SYy7bSba4D4FSz8DJeKY/S/r+g==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/use-sync-external-store": "^0.0.6",
+        "use-sync-external-store": "^1.4.0"
+      },
+      "peerDependencies": {
+        "@types/react": "^18.2.25 || ^19",
+        "react": "^18.0 || ^19",
+        "redux": "^5.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "redux": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.18.0",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/react-refresh/-/react-refresh-0.18.0.tgz",
@@ -3534,6 +3853,57 @@
         "react-dom": ">=18"
       }
     },
+    "node_modules/recharts": {
+      "version": "3.8.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/recharts/-/recharts-3.8.1.tgz",
+      "integrity": "sha512-mwzmO1s9sFL0TduUpwndxCUNoXsBw3u3E/0+A+cLcrSfQitSG62L32N69GhqUrrT5qKcAE3pCGVINC6pqkBBQg==",
+      "license": "MIT",
+      "workspaces": [
+        "www"
+      ],
+      "dependencies": {
+        "@reduxjs/toolkit": "^1.9.0 || 2.x.x",
+        "clsx": "^2.1.1",
+        "decimal.js-light": "^2.5.1",
+        "es-toolkit": "^1.39.3",
+        "eventemitter3": "^5.0.1",
+        "immer": "^10.1.1",
+        "react-redux": "8.x.x || 9.x.x",
+        "reselect": "5.1.1",
+        "tiny-invariant": "^1.3.3",
+        "use-sync-external-store": "^1.2.2",
+        "victory-vendor": "^37.0.2"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react-dom": "^16.0.0 || ^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react-is": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/redux": {
+      "version": "5.0.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/redux/-/redux-5.0.1.tgz",
+      "integrity": "sha512-M9/ELqF6fy8FwmkpnF0S3YKOqMyoWJ4+CS5Efg2ct3oY9daQvd/Pc71FpGZsVsbl3Cpb+IIcjBDUnnyBdQbq4w==",
+      "license": "MIT"
+    },
+    "node_modules/redux-thunk": {
+      "version": "3.1.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/redux-thunk/-/redux-thunk-3.1.0.tgz",
+      "integrity": "sha512-NW2r5T6ksUKXCabzhL9z+h206HQw/NJkcLm1GPImRQ8IzfXwRGqjVhKJGauHirT0DAuyy6hjdnMZaRoAcy0Klw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "redux": "^5.0.0"
+      }
+    },
+    "node_modules/reselect": {
+      "version": "5.1.1",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/reselect/-/reselect-5.1.1.tgz",
+      "integrity": "sha512-K/BG6eIky/SBpzfHZv/dd+9JBFiS4SWV7FIujVyJRux6e45+73RaUHXLmIR1f7WOMaQ0U1km6qwklRQxpJJY0w==",
+      "license": "MIT"
+    },
     "node_modules/resolve-from": {
       "version": "4.0.0",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/resolve-from/-/resolve-from-4.0.0.tgz",
@@ -3691,6 +4061,12 @@
         "url": "https://opencollective.com/webpack"
       }
     },
+    "node_modules/tiny-invariant": {
+      "version": "1.3.3",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/tiny-invariant/-/tiny-invariant-1.3.3.tgz",
+      "integrity": "sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==",
+      "license": "MIT"
+    },
     "node_modules/tinyglobby": {
       "version": "0.2.15",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/tinyglobby/-/tinyglobby-0.2.15.tgz",
@@ -3820,6 +4196,37 @@
         "punycode": "^2.1.0"
       }
     },
+    "node_modules/use-sync-external-store": {
+      "version": "1.6.0",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/use-sync-external-store/-/use-sync-external-store-1.6.0.tgz",
+      "integrity": "sha512-Pp6GSwGP/NrPIrxVFAIkOQeyw8lFenOHijQWkUTrDvrF4ALqylP2C/KCkeS9dpUM3KvYRQhna5vt7IL95+ZQ9w==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/victory-vendor": {
+      "version": "37.3.6",
+      "resolved": "https://nexus.gc-si.dev/repository/npm-public/victory-vendor/-/victory-vendor-37.3.6.tgz",
+      "integrity": "sha512-SbPDPdDBYp+5MJHhBCAyI7wKM3d5ivekigc2Dk2s7pgbZ9wIgIBYGVw4zGHBml/qTFbexrofXW6Gu4noGxrOwQ==",
+      "license": "MIT AND ISC",
+      "dependencies": {
+        "@types/d3-array": "^3.0.3",
+        "@types/d3-ease": "^3.0.0",
+        "@types/d3-interpolate": "^3.0.1",
+        "@types/d3-scale": "^4.0.2",
+        "@types/d3-shape": "^3.1.0",
+        "@types/d3-time": "^3.0.0",
+        "@types/d3-timer": "^3.0.0",
+        "d3-array": "^3.1.6",
+        "d3-ease": "^3.0.1",
+        "d3-interpolate": "^3.0.1",
+        "d3-scale": "^4.0.2",
+        "d3-shape": "^3.1.0",
+        "d3-time": "^3.0.0",
+        "d3-timer": "^3.0.1"
+      }
+    },
     "node_modules/vite": {
       "version": "7.3.2",
       "resolved": "https://nexus.gc-si.dev/repository/npm-public/vite/-/vite-7.3.2.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index 6b95e8f..4617b29 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -13,7 +13,8 @@
   "dependencies": {
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
-    "react-router-dom": "^7.13.0"
+    "react-router-dom": "^7.13.0",
+    "recharts": "^3.8.1"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index ce1211a..8ce7397 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,26 +1,54 @@
 import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom';
+import AuthProvider from './store/AuthContext';
+import AuthLayout from './layouts/AuthLayout';
+import MainLayout from './layouts/MainLayout';
+import ProtectedRoute from './components/ProtectedRoute';
+import LoginPage from './pages/LoginPage';
+import DashboardPage from './pages/DashboardPage';
+import RequestLogsPage from './pages/monitoring/RequestLogsPage';
+import RequestLogDetailPage from './pages/monitoring/RequestLogDetailPage';
+import ServiceStatusPage from './pages/monitoring/ServiceStatusPage';
+import ServiceStatusDetailPage from './pages/monitoring/ServiceStatusDetailPage';
+import MyKeysPage from './pages/apikeys/MyKeysPage';
+import KeyRequestPage from './pages/apikeys/KeyRequestPage';
+import KeyAdminPage from './pages/apikeys/KeyAdminPage';
+import ServicesPage from './pages/admin/ServicesPage';
+import UsersPage from './pages/admin/UsersPage';
+import TenantsPage from './pages/admin/TenantsPage';
+import NotFoundPage from './pages/NotFoundPage';
 
 const BASE_PATH = '/snp-connection';
 
-function App() {
+const App = () => {
   return (
     <BrowserRouter basename={BASE_PATH}>
-      <Routes>
-        <Route path="/" element={<Navigate to="/dashboard" replace />} />
-        <Route
-          path="/dashboard"
-          element={
-            <div className="flex min-h-screen items-center justify-center bg-gray-50">
-              <div className="text-center">
-                <h1 className="text-3xl font-bold text-gray-900">SNP Connection Monitoring</h1>
-                <p className="mt-2 text-gray-600">Dashboard - Coming Soon</p>
-              </div>
-            </div>
-          }
-        />
-      </Routes>
+      <AuthProvider>
+        <Routes>
+          <Route element={<AuthLayout />}>
+            <Route path="/login" element={<LoginPage />} />
+          </Route>
+
+          <Route element={<ProtectedRoute />}>
+            <Route element={<MainLayout />}>
+              <Route path="/" element={<Navigate to="/dashboard" replace />} />
+              <Route path="/dashboard" element={<DashboardPage />} />
+              <Route path="/monitoring/request-logs" element={<RequestLogsPage />} />
+              <Route path="/monitoring/request-logs/:id" element={<RequestLogDetailPage />} />
+              <Route path="/monitoring/service-status" element={<ServiceStatusPage />} />
+              <Route path="/monitoring/service-status/:serviceId" element={<ServiceStatusDetailPage />} />
+              <Route path="/apikeys/my-keys" element={<MyKeysPage />} />
+              <Route path="/apikeys/request" element={<KeyRequestPage />} />
+              <Route path="/apikeys/admin" element={<KeyAdminPage />} />
+              <Route path="/admin/services" element={<ServicesPage />} />
+              <Route path="/admin/users" element={<UsersPage />} />
+              <Route path="/admin/tenants" element={<TenantsPage />} />
+              <Route path="*" element={<NotFoundPage />} />
+            </Route>
+          </Route>
+        </Routes>
+      </AuthProvider>
     </BrowserRouter>
   );
-}
+};
 
 export default App;
diff --git a/frontend/src/components/ProtectedRoute.tsx b/frontend/src/components/ProtectedRoute.tsx
new file mode 100644
index 0000000..6a3d913
--- /dev/null
+++ b/frontend/src/components/ProtectedRoute.tsx
@@ -0,0 +1,22 @@
+import { Navigate, Outlet } from 'react-router-dom';
+import { useAuth } from '../hooks/useAuth';
+
+const ProtectedRoute = () => {
+  const { isAuthenticated, isLoading } = useAuth();
+
+  if (isLoading) {
+    return (
+      <div className="flex min-h-screen items-center justify-center">
+        <div className="h-8 w-8 animate-spin rounded-full border-4 border-blue-500 border-t-transparent" />
+      </div>
+    );
+  }
+
+  if (!isAuthenticated) {
+    return <Navigate to="/login" replace />;
+  }
+
+  return <Outlet />;
+};
+
+export default ProtectedRoute;
diff --git a/frontend/src/hooks/useAuth.ts b/frontend/src/hooks/useAuth.ts
new file mode 100644
index 0000000..68173a3
--- /dev/null
+++ b/frontend/src/hooks/useAuth.ts
@@ -0,0 +1,8 @@
+import { useContext } from 'react';
+import { AuthContext } from '../store/AuthContext';
+
+export const useAuth = () => {
+  const context = useContext(AuthContext);
+  if (!context) throw new Error('useAuth must be used within AuthProvider');
+  return context;
+};
diff --git a/frontend/src/layouts/AuthLayout.tsx b/frontend/src/layouts/AuthLayout.tsx
new file mode 100644
index 0000000..6819e6a
--- /dev/null
+++ b/frontend/src/layouts/AuthLayout.tsx
@@ -0,0 +1,11 @@
+import { Outlet } from 'react-router-dom';
+
+const AuthLayout = () => {
+  return (
+    <div className="flex min-h-screen items-center justify-center bg-gray-50">
+      <Outlet />
+    </div>
+  );
+};
+
+export default AuthLayout;
diff --git a/frontend/src/layouts/MainLayout.tsx b/frontend/src/layouts/MainLayout.tsx
new file mode 100644
index 0000000..2930151
--- /dev/null
+++ b/frontend/src/layouts/MainLayout.tsx
@@ -0,0 +1,167 @@
+import { useState } from 'react';
+import { Outlet, NavLink } from 'react-router-dom';
+import { useAuth } from '../hooks/useAuth';
+
+interface NavGroup {
+  label: string;
+  items: { label: string; path: string }[];
+  adminOnly?: boolean;
+}
+
+const navGroups: NavGroup[] = [
+  {
+    label: 'Monitoring',
+    items: [
+      { label: 'Request Logs', path: '/monitoring/request-logs' },
+      { label: 'Service Status', path: '/monitoring/service-status' },
+    ],
+  },
+  {
+    label: 'API Keys',
+    items: [
+      { label: 'My Keys', path: '/apikeys/my-keys' },
+      { label: 'Request', path: '/apikeys/request' },
+      { label: 'Admin', path: '/apikeys/admin' },
+    ],
+  },
+  {
+    label: 'Admin',
+    adminOnly: true,
+    items: [
+      { label: 'Services', path: '/admin/services' },
+      { label: 'Users', path: '/admin/users' },
+      { label: 'Tenants', path: '/admin/tenants' },
+    ],
+  },
+];
+
+const MainLayout = () => {
+  const { user, logout } = useAuth();
+  const [openGroups, setOpenGroups] = useState<Record<string, boolean>>({
+    Monitoring: true,
+    'API Keys': true,
+    Admin: true,
+  });
+
+  const toggleGroup = (label: string) => {
+    setOpenGroups((prev) => ({ ...prev, [label]: !prev[label] }));
+  };
+
+  const handleLogout = async () => {
+    await logout();
+  };
+
+  const isAdminOrManager = user?.role === 'ADMIN' || user?.role === 'MANAGER';
+
+  return (
+    <div className="flex min-h-screen">
+      {/* Sidebar */}
+      <aside className="fixed left-0 top-0 h-screen w-64 bg-gray-900 text-white flex flex-col">
+        <div className="flex items-center gap-2 px-6 py-5 border-b border-gray-700">
+          <svg className="h-6 w-6 text-blue-400" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
+          </svg>
+          <span className="text-lg font-semibold">SNP Connection</span>
+        </div>
+
+        <nav className="flex-1 overflow-y-auto px-3 py-4">
+          {/* Dashboard */}
+          <NavLink
+            to="/dashboard"
+            className={({ isActive }) =>
+              `flex items-center gap-3 rounded-lg px-3 py-2 text-sm font-medium transition-colors ${
+                isActive ? 'bg-gray-700 text-white' : 'text-gray-300 hover:bg-gray-800 hover:text-white'
+              }`
+            }
+          >
+            <svg className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 6a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2H6a2 2 0 01-2-2V6zm10 0a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2V6zM4 16a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2H6a2 2 0 01-2-2v-2zm10 0a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2v-2z" />
+            </svg>
+            Dashboard
+          </NavLink>
+
+          {/* Nav Groups */}
+          {navGroups.map((group) => {
+            if (group.adminOnly && user?.role !== 'ADMIN') return null;
+
+            const isOpen = openGroups[group.label] ?? false;
+
+            return (
+              <div key={group.label} className="mt-4">
+                <button
+                  onClick={() => toggleGroup(group.label)}
+                  className="flex w-full items-center justify-between rounded-lg px-3 py-2 text-xs font-semibold uppercase tracking-wider text-gray-400 hover:text-white"
+                >
+                  {group.label}
+                  <svg
+                    className={`h-4 w-4 transition-transform ${isOpen ? 'rotate-90' : ''}`}
+                    fill="none"
+                    viewBox="0 0 24 24"
+                    stroke="currentColor"
+                  >
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+                  </svg>
+                </button>
+
+                {isOpen && (
+                  <div className="ml-2 space-y-1">
+                    {group.items.map((item) => {
+                      if (
+                        group.label === 'API Keys' &&
+                        item.label === 'Admin' &&
+                        !isAdminOrManager
+                      ) {
+                        return null;
+                      }
+
+                      return (
+                        <NavLink
+                          key={item.path}
+                          to={item.path}
+                          className={({ isActive }) =>
+                            `block rounded-lg px-3 py-2 text-sm transition-colors ${
+                              isActive ? 'bg-gray-700 text-white' : 'text-gray-300 hover:bg-gray-800 hover:text-white'
+                            }`
+                          }
+                        >
+                          {item.label}
+                        </NavLink>
+                      );
+                    })}
+                  </div>
+                )}
+              </div>
+            );
+          })}
+        </nav>
+      </aside>
+
+      {/* Main Content */}
+      <div className="flex-1 ml-64">
+        {/* Header */}
+        <header className="h-16 bg-white border-b border-gray-200 flex items-center justify-between px-6">
+          <div />
+          <div className="flex items-center gap-4">
+            <span className="text-sm text-gray-700">{user?.userName}</span>
+            <span className="rounded-full bg-blue-100 px-2.5 py-0.5 text-xs font-medium text-blue-800">
+              {user?.role}
+            </span>
+            <button
+              onClick={handleLogout}
+              className="rounded-lg px-3 py-1.5 text-sm text-gray-600 hover:bg-gray-100 hover:text-gray-900 transition-colors"
+            >
+              Logout
+            </button>
+          </div>
+        </header>
+
+        {/* Content */}
+        <main className="p-6">
+          <Outlet />
+        </main>
+      </div>
+    </div>
+  );
+};
+
+export default MainLayout;
diff --git a/frontend/src/pages/DashboardPage.tsx b/frontend/src/pages/DashboardPage.tsx
new file mode 100644
index 0000000..8698898
--- /dev/null
+++ b/frontend/src/pages/DashboardPage.tsx
@@ -0,0 +1,434 @@
+import { useState, useEffect, useCallback, useMemo } from 'react';
+import { useNavigate } from 'react-router-dom';
+import {
+  LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, Legend, ResponsiveContainer,
+  PieChart, Pie, Cell, AreaChart, Area,
+} from 'recharts';
+import type { DashboardStats, HourlyTrend, ServiceRatio, ErrorTrend, TopApi, TenantRatio } from '../types/dashboard';
+import type { RequestLog } from '../types/monitoring';
+import type { HeartbeatStatus } from '../types/service';
+import {
+  getSummary, getHourlyTrend, getServiceRatio,
+  getErrorTrend, getTopApis, getRecentLogs, getHeartbeat,
+  getTenantRequestRatio, getTenantUserRatio,
+} from '../services/dashboardService';
+
+const PIE_COLORS = ['#3b82f6', '#10b981', '#f59e0b', '#ef4444', '#8b5cf6', '#06b6d4'];
+
+const SERVICE_TAG_STYLES = [
+  'bg-blue-100 text-blue-700',
+  'bg-emerald-100 text-emerald-700',
+  'bg-amber-100 text-amber-700',
+  'bg-red-100 text-red-700',
+  'bg-violet-100 text-violet-700',
+  'bg-cyan-100 text-cyan-700',
+];
+
+const STATUS_BADGE: Record<string, string> = {
+  SUCCESS: 'bg-green-100 text-green-800',
+  FAIL: 'bg-red-100 text-red-800',
+  DENIED: 'bg-red-100 text-red-800',
+  EXPIRED: 'bg-orange-100 text-orange-800',
+  INVALID_KEY: 'bg-red-100 text-red-800',
+  ERROR: 'bg-orange-100 text-orange-800',
+  FAILED: 'bg-gray-100 text-gray-800',
+};
+
+const AUTO_REFRESH_MS = 30000;
+
+const extractSettled = <T,>(result: PromiseSettledResult<{ data?: T }>, fallback: T): T => {
+  if (result.status === 'fulfilled' && result.value.data !== undefined) {
+    return result.value.data;
+  }
+  return fallback;
+};
+
+const truncate = (str: string, max: number): string => {
+  return str.length > max ? str.slice(0, max) + '...' : str;
+};
+
+const DashboardPage = () => {
+  const navigate = useNavigate();
+
+  const [stats, setStats] = useState<DashboardStats | null>(null);
+  const [heartbeat, setHeartbeat] = useState<HeartbeatStatus[]>([]);
+  const [hourlyTrend, setHourlyTrend] = useState<HourlyTrend[]>([]);
+  const [serviceRatio, setServiceRatio] = useState<ServiceRatio[]>([]);
+  const [errorTrend, setErrorTrend] = useState<ErrorTrend[]>([]);
+  const [topApis, setTopApis] = useState<TopApi[]>([]);
+  const [tenantRequestRatio, setTenantRequestRatio] = useState<TenantRatio[]>([]);
+  const [tenantUserRatio, setTenantUserRatio] = useState<TenantRatio[]>([]);
+  const [recentLogs, setRecentLogs] = useState<RequestLog[]>([]);
+  const [lastUpdated, setLastUpdated] = useState<string>('');
+  const [isLoading, setIsLoading] = useState(true);
+
+  const fetchAll = useCallback(async () => {
+    try {
+      const [summaryRes, heartbeatRes, hourlyRes, serviceRes, errorRes, topRes, tenantReqRes, tenantUserRes, logsRes] =
+        await Promise.allSettled([
+          getSummary(),
+          getHeartbeat(),
+          getHourlyTrend(),
+          getServiceRatio(),
+          getErrorTrend(),
+          getTopApis(),
+          getTenantRequestRatio(),
+          getTenantUserRatio(),
+          getRecentLogs(),
+        ]);
+
+      setStats(extractSettled<DashboardStats | null>(summaryRes, null));
+      setHeartbeat(extractSettled<HeartbeatStatus[]>(heartbeatRes, []));
+      setHourlyTrend(extractSettled<HourlyTrend[]>(hourlyRes, []));
+      setServiceRatio(extractSettled<ServiceRatio[]>(serviceRes, []));
+      setErrorTrend(extractSettled<ErrorTrend[]>(errorRes, []));
+      setTopApis(extractSettled<TopApi[]>(topRes, []));
+      setTenantRequestRatio(extractSettled<TenantRatio[]>(tenantReqRes, []));
+      setTenantUserRatio(extractSettled<TenantRatio[]>(tenantUserRes, []));
+      setRecentLogs(extractSettled<RequestLog[]>(logsRes, []));
+      setLastUpdated(new Date().toLocaleTimeString('ko-KR'));
+    } finally {
+      setIsLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    fetchAll();
+    const interval = setInterval(fetchAll, AUTO_REFRESH_MS);
+    return () => clearInterval(interval);
+  }, [fetchAll]);
+
+  const errorTrendPivoted = useMemo(() => {
+    const serviceNames = [...new Set(errorTrend.map((e) => e.serviceName))];
+    const byHour: Record<number, Record<string, number>> = {};
+    for (const item of errorTrend) {
+      if (!byHour[item.hour]) {
+        byHour[item.hour] = { hour: item.hour };
+      }
+      byHour[item.hour][item.serviceName] = item.errorRate;
+    }
+    return {
+      data: Object.values(byHour),
+      serviceNames,
+    };
+  }, [errorTrend]);
+
+  const topApiServiceColorMap = useMemo(() => {
+    const serviceNames = [...new Set(topApis.map((a) => a.serviceName))];
+    const map: Record<string, { tag: string; bar: string }> = {};
+    serviceNames.forEach((name, i) => {
+      map[name] = {
+        tag: SERVICE_TAG_STYLES[i % SERVICE_TAG_STYLES.length],
+        bar: PIE_COLORS[i % PIE_COLORS.length],
+      };
+    });
+    return map;
+  }, [topApis]);
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center h-64">
+        <div className="text-gray-500">Loading...</div>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      {/* Header */}
+      <div className="flex items-center justify-between mb-6">
+        <h1 className="text-2xl font-bold text-gray-900">Dashboard</h1>
+        {lastUpdated && (
+          <span className="text-sm text-gray-500">마지막 갱신: {lastUpdated}</span>
+        )}
+      </div>
+
+      {/* Row 1: Summary Cards */}
+      {stats && (
+        <div className="grid grid-cols-4 gap-4 mb-6">
+          <div className="bg-white rounded-lg shadow p-6">
+            <p className="text-sm text-gray-500">오늘 총 요청</p>
+            <p className="text-3xl font-bold">{stats.totalRequests.toLocaleString()}</p>
+            <p className={`text-sm ${stats.changePercent > 0 ? 'text-green-600' : stats.changePercent < 0 ? 'text-red-600' : 'text-gray-500'}`}>
+              {stats.changePercent > 0 ? '▲' : stats.changePercent < 0 ? '▼' : ''} 전일 대비 {stats.changePercent}%
+            </p>
+          </div>
+          <div className="bg-white rounded-lg shadow p-6">
+            <p className="text-sm text-gray-500">성공률</p>
+            <p className="text-3xl font-bold">{stats.successRate.toFixed(1)}%</p>
+            <p className="text-sm text-red-500">실패 {stats.failureCount}건</p>
+          </div>
+          <div className="bg-white rounded-lg shadow p-6">
+            <p className="text-sm text-gray-500">평균 응답 시간</p>
+            <p className="text-3xl font-bold">{stats.avgResponseTime.toFixed(0)}ms</p>
+          </div>
+          <div className="bg-white rounded-lg shadow p-6">
+            <p className="text-sm text-gray-500">활성 사용자</p>
+            <p className="text-3xl font-bold">{stats.activeUserCount}</p>
+            <p className="text-sm text-gray-500">오늘</p>
+          </div>
+        </div>
+      )}
+
+      {/* Row 2: Heartbeat Status Bar */}
+      <div className="bg-white rounded-lg shadow p-4 mb-6">
+        {heartbeat.length > 0 ? (
+          <div className="flex flex-row gap-6">
+            {heartbeat.map((svc) => (
+              <div
+                key={svc.serviceId}
+                className="flex items-center gap-2 cursor-pointer hover:bg-gray-50 rounded-lg px-2 py-1 transition-colors"
+                onClick={() => navigate('/monitoring/service-status')}
+              >
+                <div
+                  className={`w-3 h-3 rounded-full ${
+                    svc.healthStatus === 'UP'
+                      ? 'bg-green-500'
+                      : svc.healthStatus === 'DOWN'
+                        ? 'bg-red-500'
+                        : 'bg-gray-400'
+                  }`}
+                />
+                <span className="font-medium">{svc.serviceName}</span>
+                {svc.healthResponseTime !== null && (
+                  <span className="text-gray-500 text-sm">{svc.healthResponseTime}ms</span>
+                )}
+                {svc.healthCheckedAt && (
+                  <span className="text-gray-400 text-xs">{svc.healthCheckedAt}</span>
+                )}
+              </div>
+            ))}
+          </div>
+        ) : (
+          <p className="text-gray-500 text-sm">등록된 서비스가 없습니다</p>
+        )}
+      </div>
+
+      {/* Row 3: Charts 2x2 */}
+      <div className="grid grid-cols-2 gap-6 mb-6">
+        {/* Chart 1: Hourly Trend */}
+        <div className="bg-white rounded-lg shadow p-6">
+          <h3 className="text-lg font-semibold text-gray-900 mb-4">시간별 요청 추이</h3>
+          {hourlyTrend.length > 0 ? (
+            <ResponsiveContainer width="100%" height={300}>
+              <LineChart data={hourlyTrend}>
+                <CartesianGrid strokeDasharray="3 3" />
+                <XAxis dataKey="hour" tickFormatter={(h: number) => `${h}시`} />
+                <YAxis />
+                <Tooltip labelFormatter={(h) => `${h}시`} />
+                <Legend />
+                <Line type="monotone" dataKey="successCount" stroke="#3b82f6" name="성공" />
+                <Line type="monotone" dataKey="failureCount" stroke="#ef4444" name="실패" />
+              </LineChart>
+            </ResponsiveContainer>
+          ) : (
+            <p className="text-gray-400 text-center py-20">데이터가 없습니다</p>
+          )}
+        </div>
+
+        {/* Chart 2: Service Ratio */}
+        <div className="bg-white rounded-lg shadow p-6">
+          <h3 className="text-lg font-semibold text-gray-900 mb-4">서비스별 요청 비율</h3>
+          {serviceRatio.length > 0 ? (
+            <ResponsiveContainer width="100%" height={300}>
+              <PieChart>
+                <Pie
+                  data={serviceRatio}
+                  dataKey="count"
+                  nameKey="serviceName"
+                  innerRadius={60}
+                  outerRadius={100}
+                >
+                  {serviceRatio.map((_, idx) => (
+                    <Cell key={idx} fill={PIE_COLORS[idx % PIE_COLORS.length]} />
+                  ))}
+                </Pie>
+                <Tooltip />
+                <Legend layout="vertical" align="right" verticalAlign="middle" />
+              </PieChart>
+            </ResponsiveContainer>
+          ) : (
+            <p className="text-gray-400 text-center py-20">데이터가 없습니다</p>
+          )}
+        </div>
+
+        {/* Chart 3: Error Trend */}
+        <div className="bg-white rounded-lg shadow p-6">
+          <h3 className="text-lg font-semibold text-gray-900 mb-4">에러율 추이</h3>
+          {errorTrendPivoted.data.length > 0 ? (
+            <ResponsiveContainer width="100%" height={300}>
+              <AreaChart data={errorTrendPivoted.data}>
+                <CartesianGrid strokeDasharray="3 3" />
+                <XAxis dataKey="hour" tickFormatter={(h: number) => `${h}시`} />
+                <YAxis unit="%" />
+                <Tooltip labelFormatter={(h) => `${h}시`} />
+                <Legend />
+                {errorTrendPivoted.serviceNames.map((name, idx) => (
+                  <Area
+                    key={name}
+                    type="monotone"
+                    dataKey={name}
+                    stackId="1"
+                    stroke={PIE_COLORS[idx % PIE_COLORS.length]}
+                    fill={PIE_COLORS[idx % PIE_COLORS.length]}
+                    fillOpacity={0.3}
+                  />
+                ))}
+              </AreaChart>
+            </ResponsiveContainer>
+          ) : (
+            <p className="text-gray-400 text-center py-20">데이터가 없습니다</p>
+          )}
+        </div>
+
+        {/* Chart 4: Top APIs */}
+        <div className="bg-white rounded-lg shadow p-6">
+          <h3 className="text-lg font-semibold text-gray-900 mb-4">상위 호출 API</h3>
+          {topApis.length > 0 ? (
+            <div className="space-y-2">
+              {topApis.map((api, idx) => {
+                const maxCount = topApis[0]?.count || 1;
+                const pct = (api.count / maxCount) * 100;
+                const colors = topApiServiceColorMap[api.serviceName] || { tag: SERVICE_TAG_STYLES[0], bar: PIE_COLORS[0] };
+                return (
+                  <div key={idx} className="flex items-center gap-3">
+                    <span className="text-xs text-gray-400 w-5 text-right">{idx + 1}</span>
+                    <span className={`shrink-0 px-1.5 py-0.5 rounded text-xs font-medium ${colors.tag}`}>
+                      {api.serviceName}
+                    </span>
+                    <span className="shrink-0 text-sm text-gray-900 w-48 truncate" title={api.apiName}>
+                      {api.apiName}
+                    </span>
+                    <div className="flex-1 bg-gray-100 rounded-full h-5 relative">
+                      <div
+                        className="h-5 rounded-full"
+                        style={{ width: `${pct}%`, backgroundColor: colors.bar }}
+                      />
+                    </div>
+                    <span className="text-sm font-medium text-gray-700 w-12 text-right">{api.count}</span>
+                  </div>
+                );
+              })}
+            </div>
+          ) : (
+            <p className="text-gray-400 text-center py-20">데이터가 없습니다</p>
+          )}
+        </div>
+      </div>
+
+      {/* Row 4: Tenant Stats */}
+      <div className="grid grid-cols-2 gap-6 mb-6">
+        <div className="bg-white rounded-lg shadow p-6">
+          <h3 className="text-lg font-semibold text-gray-900 mb-4">테넌트별 요청 비율</h3>
+          {tenantRequestRatio.length > 0 ? (
+            <ResponsiveContainer width="100%" height={300}>
+              <PieChart>
+                <Pie
+                  data={tenantRequestRatio}
+                  dataKey="count"
+                  nameKey="tenantName"
+                  innerRadius={60}
+                  outerRadius={100}
+                >
+                  {tenantRequestRatio.map((_, idx) => (
+                    <Cell key={idx} fill={PIE_COLORS[idx % PIE_COLORS.length]} />
+                  ))}
+                </Pie>
+                <Tooltip />
+                <Legend layout="vertical" align="right" verticalAlign="middle" />
+              </PieChart>
+            </ResponsiveContainer>
+          ) : (
+            <p className="text-gray-400 text-center py-20">데이터가 없습니다</p>
+          )}
+        </div>
+
+        <div className="bg-white rounded-lg shadow p-6">
+          <h3 className="text-lg font-semibold text-gray-900 mb-4">테넌트별 사용자 비율</h3>
+          {tenantUserRatio.length > 0 ? (
+            <ResponsiveContainer width="100%" height={300}>
+              <PieChart>
+                <Pie
+                  data={tenantUserRatio}
+                  dataKey="count"
+                  nameKey="tenantName"
+                  innerRadius={60}
+                  outerRadius={100}
+                >
+                  {tenantUserRatio.map((_, idx) => (
+                    <Cell key={idx} fill={PIE_COLORS[idx % PIE_COLORS.length]} />
+                  ))}
+                </Pie>
+                <Tooltip />
+                <Legend layout="vertical" align="right" verticalAlign="middle" />
+              </PieChart>
+            </ResponsiveContainer>
+          ) : (
+            <p className="text-gray-400 text-center py-20">데이터가 없습니다</p>
+          )}
+        </div>
+      </div>
+
+      {/* Row 5: Recent Logs */}
+      <div className="bg-white rounded-lg shadow mb-6">
+        <div className="p-6 border-b border-gray-200">
+          <h3 className="text-lg font-semibold text-gray-900">최근 요청 로그</h3>
+        </div>
+        {recentLogs.length > 0 ? (
+          <>
+          <div className="overflow-x-auto">
+            <table className="w-full text-sm">
+              <thead className="bg-gray-50">
+                <tr>
+                  <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">시간</th>
+                  <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">서비스</th>
+                  <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">사용자</th>
+                  <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">URL</th>
+                  <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">상태</th>
+                  <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">응답시간</th>
+                </tr>
+              </thead>
+              <tbody className="divide-y divide-gray-200">
+                {recentLogs.slice(0, 5).map((log) => (
+                  <tr
+                    key={log.logId}
+                    className="hover:bg-gray-50 cursor-pointer"
+                    onClick={() => navigate(`/monitoring/request-logs/${log.logId}`)}
+                  >
+                    <td className="px-4 py-3 text-gray-600 whitespace-nowrap">{log.requestedAt}</td>
+                    <td className="px-4 py-3 text-gray-900">{log.serviceName ?? '-'}</td>
+                    <td className="px-4 py-3 text-gray-900">{log.userName ?? '-'}</td>
+                    <td className="px-4 py-3 text-gray-900" title={log.requestUrl}>
+                      {truncate(log.requestUrl, 40)}
+                    </td>
+                    <td className="px-4 py-3">
+                      <span className={`px-2 py-1 rounded-full text-xs font-medium ${STATUS_BADGE[log.requestStatus] ?? 'bg-gray-100 text-gray-800'}`}>
+                        {log.requestStatus}
+                      </span>
+                    </td>
+                    <td className="px-4 py-3 text-gray-600">
+                      {log.responseTime !== null ? `${log.responseTime}ms` : '-'}
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+          <div className="px-6 py-3 border-t text-center">
+            <button
+              onClick={() => navigate('/monitoring/request-logs')}
+              className="text-sm text-blue-600 hover:text-blue-800 font-medium"
+            >
+              더보기 →
+            </button>
+          </div>
+          </>
+        ) : (
+          <p className="text-gray-400 text-center py-8">요청 로그가 없습니다</p>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default DashboardPage;
diff --git a/frontend/src/pages/LoginPage.tsx b/frontend/src/pages/LoginPage.tsx
new file mode 100644
index 0000000..0a0a44c
--- /dev/null
+++ b/frontend/src/pages/LoginPage.tsx
@@ -0,0 +1,93 @@
+import { useState } from 'react';
+import type { FormEvent } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { useAuth } from '../hooks/useAuth';
+
+const LoginPage = () => {
+  const navigate = useNavigate();
+  const { login } = useAuth();
+  const [loginId, setLoginId] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+
+  const handleSubmit = async (e: FormEvent) => {
+    e.preventDefault();
+    setError('');
+
+    if (!loginId.trim() || !password.trim()) {
+      setError('아이디와 비밀번호를 입력해주세요.');
+      return;
+    }
+
+    setIsSubmitting(true);
+    try {
+      await login(loginId, password);
+      navigate('/dashboard', { replace: true });
+    } catch (err) {
+      if (err instanceof Error) {
+        setError(err.message);
+      } else {
+        setError('로그인에 실패했습니다.');
+      }
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="w-full max-w-md">
+      <div className="rounded-xl bg-white px-8 py-10 shadow-lg">
+        <h1 className="mb-8 text-center text-2xl font-bold text-gray-900">
+          SNP Connection Monitoring
+        </h1>
+
+        <form onSubmit={handleSubmit} className="space-y-5">
+          <div>
+            <label htmlFor="loginId" className="block text-sm font-medium text-gray-700 mb-1">
+              아이디
+            </label>
+            <input
+              id="loginId"
+              type="text"
+              value={loginId}
+              onChange={(e) => setLoginId(e.target.value)}
+              className="w-full rounded-lg border border-gray-300 px-4 py-2.5 text-sm focus:border-blue-500 focus:outline-none focus:ring-1 focus:ring-blue-500"
+              placeholder="아이디를 입력하세요"
+              autoComplete="username"
+            />
+          </div>
+
+          <div>
+            <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-1">
+              비밀번호
+            </label>
+            <input
+              id="password"
+              type="password"
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              className="w-full rounded-lg border border-gray-300 px-4 py-2.5 text-sm focus:border-blue-500 focus:outline-none focus:ring-1 focus:ring-blue-500"
+              placeholder="비밀번호를 입력하세요"
+              autoComplete="current-password"
+            />
+          </div>
+
+          {error && (
+            <p className="text-sm text-red-600">{error}</p>
+          )}
+
+          <button
+            type="submit"
+            disabled={isSubmitting}
+            className="w-full rounded-lg bg-blue-600 px-4 py-2.5 text-sm font-medium text-white hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 transition-colors"
+          >
+            {isSubmitting ? '로그인 중...' : '로그인'}
+          </button>
+        </form>
+      </div>
+    </div>
+  );
+};
+
+export default LoginPage;
diff --git a/frontend/src/pages/NotFoundPage.tsx b/frontend/src/pages/NotFoundPage.tsx
new file mode 100644
index 0000000..5dc4188
--- /dev/null
+++ b/frontend/src/pages/NotFoundPage.tsx
@@ -0,0 +1,18 @@
+import { Link } from 'react-router-dom';
+
+const NotFoundPage = () => {
+  return (
+    <div className="flex min-h-[60vh] flex-col items-center justify-center text-center">
+      <h1 className="text-4xl font-bold text-gray-900">404 - Page Not Found</h1>
+      <p className="mt-3 text-gray-600">요청하신 페이지를 찾을 수 없습니다.</p>
+      <Link
+        to="/dashboard"
+        className="mt-6 rounded-lg bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700 transition-colors"
+      >
+        Dashboard로 이동
+      </Link>
+    </div>
+  );
+};
+
+export default NotFoundPage;
diff --git a/frontend/src/pages/admin/ServicesPage.tsx b/frontend/src/pages/admin/ServicesPage.tsx
new file mode 100644
index 0000000..256fd2f
--- /dev/null
+++ b/frontend/src/pages/admin/ServicesPage.tsx
@@ -0,0 +1,575 @@
+import { useState, useEffect } from 'react';
+import type {
+  ServiceInfo,
+  ServiceApi,
+  CreateServiceRequest,
+  UpdateServiceRequest,
+  CreateServiceApiRequest,
+} from '../../types/service';
+import {
+  getServices,
+  createService,
+  updateService,
+  getServiceApis,
+  createServiceApi,
+} from '../../services/serviceService';
+
+const HEALTH_BADGE: Record<string, { dot: string; bg: string; text: string }> = {
+  UP: { dot: 'bg-green-500', bg: 'bg-green-100', text: 'text-green-800' },
+  DOWN: { dot: 'bg-red-500', bg: 'bg-red-100', text: 'text-red-800' },
+  UNKNOWN: { dot: 'bg-gray-400', bg: 'bg-gray-100', text: 'text-gray-800' },
+};
+
+const METHOD_COLOR: Record<string, string> = {
+  GET: 'bg-green-100 text-green-800',
+  POST: 'bg-blue-100 text-blue-800',
+  PUT: 'bg-orange-100 text-orange-800',
+  DELETE: 'bg-red-100 text-red-800',
+};
+
+const formatRelativeTime = (dateStr: string | null): string => {
+  if (!dateStr) return '-';
+  const diff = Date.now() - new Date(dateStr).getTime();
+  const seconds = Math.floor(diff / 1000);
+  if (seconds < 60) return `${seconds}초 전`;
+  const minutes = Math.floor(seconds / 60);
+  if (minutes < 60) return `${minutes}분 전`;
+  const hours = Math.floor(minutes / 60);
+  if (hours < 24) return `${hours}시간 전`;
+  const days = Math.floor(hours / 24);
+  return `${days}일 전`;
+};
+
+const ServicesPage = () => {
+  const [services, setServices] = useState<ServiceInfo[]>([]);
+  const [selectedService, setSelectedService] = useState<ServiceInfo | null>(null);
+  const [serviceApis, setServiceApis] = useState<ServiceApi[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const [isServiceModalOpen, setIsServiceModalOpen] = useState(false);
+  const [editingService, setEditingService] = useState<ServiceInfo | null>(null);
+  const [serviceCode, setServiceCode] = useState('');
+  const [serviceName, setServiceName] = useState('');
+  const [serviceUrl, setServiceUrl] = useState('');
+  const [serviceDescription, setServiceDescription] = useState('');
+  const [healthCheckUrl, setHealthCheckUrl] = useState('');
+  const [healthCheckInterval, setHealthCheckInterval] = useState(60);
+  const [serviceIsActive, setServiceIsActive] = useState(true);
+
+  const [isApiModalOpen, setIsApiModalOpen] = useState(false);
+  const [apiMethod, setApiMethod] = useState('GET');
+  const [apiPath, setApiPath] = useState('');
+  const [apiName, setApiName] = useState('');
+  const [apiDescription, setApiDescription] = useState('');
+
+  const fetchServices = async () => {
+    try {
+      setLoading(true);
+      const res = await getServices();
+      if (res.success && res.data) {
+        setServices(res.data);
+      } else {
+        setError(res.message || '서비스 목록을 불러오는데 실패했습니다.');
+      }
+    } catch {
+      setError('서비스 목록을 불러오는데 실패했습니다.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const fetchApis = async (serviceId: number) => {
+    try {
+      const res = await getServiceApis(serviceId);
+      if (res.success && res.data) {
+        setServiceApis(res.data);
+      }
+    } catch {
+      setServiceApis([]);
+    }
+  };
+
+  useEffect(() => {
+    fetchServices();
+  }, []);
+
+  const handleSelectService = (service: ServiceInfo) => {
+    setSelectedService(service);
+    fetchApis(service.serviceId);
+  };
+
+  const handleOpenCreateService = () => {
+    setEditingService(null);
+    setServiceCode('');
+    setServiceName('');
+    setServiceUrl('');
+    setServiceDescription('');
+    setHealthCheckUrl('');
+    setHealthCheckInterval(60);
+    setServiceIsActive(true);
+    setIsServiceModalOpen(true);
+  };
+
+  const handleOpenEditService = (service: ServiceInfo) => {
+    setEditingService(service);
+    setServiceCode(service.serviceCode);
+    setServiceName(service.serviceName);
+    setServiceUrl(service.serviceUrl || '');
+    setServiceDescription(service.description || '');
+    setHealthCheckUrl(service.healthCheckUrl || '');
+    setHealthCheckInterval(service.healthCheckInterval);
+    setServiceIsActive(service.isActive);
+    setIsServiceModalOpen(true);
+  };
+
+  const handleCloseServiceModal = () => {
+    setIsServiceModalOpen(false);
+    setEditingService(null);
+    setError(null);
+  };
+
+  const handleServiceSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+
+    try {
+      if (editingService) {
+        const req: UpdateServiceRequest = {
+          serviceName,
+          serviceUrl: serviceUrl || undefined,
+          description: serviceDescription || undefined,
+          healthCheckUrl: healthCheckUrl || undefined,
+          healthCheckInterval,
+          isActive: serviceIsActive,
+        };
+        const res = await updateService(editingService.serviceId, req);
+        if (!res.success) {
+          setError(res.message || '서비스 수정에 실패했습니다.');
+          return;
+        }
+      } else {
+        const req: CreateServiceRequest = {
+          serviceCode,
+          serviceName,
+          serviceUrl: serviceUrl || undefined,
+          description: serviceDescription || undefined,
+          healthCheckUrl: healthCheckUrl || undefined,
+          healthCheckInterval,
+        };
+        const res = await createService(req);
+        if (!res.success) {
+          setError(res.message || '서비스 생성에 실패했습니다.');
+          return;
+        }
+      }
+      handleCloseServiceModal();
+      await fetchServices();
+    } catch {
+      setError(editingService ? '서비스 수정에 실패했습니다.' : '서비스 생성에 실패했습니다.');
+    }
+  };
+
+  const handleOpenCreateApi = () => {
+    setApiMethod('GET');
+    setApiPath('');
+    setApiName('');
+    setApiDescription('');
+    setIsApiModalOpen(true);
+  };
+
+  const handleCloseApiModal = () => {
+    setIsApiModalOpen(false);
+    setError(null);
+  };
+
+  const handleApiSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    if (!selectedService) return;
+    setError(null);
+
+    try {
+      const req: CreateServiceApiRequest = {
+        apiMethod,
+        apiPath,
+        apiName,
+        description: apiDescription || undefined,
+      };
+      const res = await createServiceApi(selectedService.serviceId, req);
+      if (!res.success) {
+        setError(res.message || 'API 생성에 실패했습니다.');
+        return;
+      }
+      handleCloseApiModal();
+      await fetchApis(selectedService.serviceId);
+    } catch {
+      setError('API 생성에 실패했습니다.');
+    }
+  };
+
+  if (loading) {
+    return <div className="text-center py-10 text-gray-500">로딩 중...</div>;
+  }
+
+  return (
+    <div>
+      <div className="flex items-center justify-between mb-6">
+        <h1 className="text-2xl font-bold text-gray-900">Services</h1>
+        <button
+          onClick={handleOpenCreateService}
+          className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+        >
+          Create Service
+        </button>
+      </div>
+
+      {error && !isServiceModalOpen && !isApiModalOpen && (
+        <div className="mb-4 p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      )}
+
+      <div className="overflow-x-auto bg-white rounded-lg shadow mb-6">
+        <table className="w-full divide-y divide-gray-200 text-sm">
+          <thead className="bg-gray-50">
+            <tr>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Code</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Name</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">URL</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Health Status</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Response Time</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Last Checked</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Active</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Actions</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-200">
+            {services.map((service) => {
+              const badge = HEALTH_BADGE[service.healthStatus] || HEALTH_BADGE.UNKNOWN;
+              const isSelected = selectedService?.serviceId === service.serviceId;
+              return (
+                <tr
+                  key={service.serviceId}
+                  onClick={() => handleSelectService(service)}
+                  className={`cursor-pointer ${
+                    isSelected ? 'bg-blue-50' : 'hover:bg-gray-50'
+                  }`}
+                >
+                  <td className="px-4 py-3 font-mono">{service.serviceCode}</td>
+                  <td className="px-4 py-3">{service.serviceName}</td>
+                  <td className="px-4 py-3 text-gray-500 truncate max-w-[200px]">
+                    {service.serviceUrl || '-'}
+                  </td>
+                  <td className="px-4 py-3">
+                    <span
+                      className={`inline-flex items-center gap-1.5 px-2 py-0.5 rounded-full text-xs font-medium ${badge.bg} ${badge.text}`}
+                    >
+                      <span className={`w-2 h-2 rounded-full ${badge.dot}`} />
+                      {service.healthStatus}
+                    </span>
+                  </td>
+                  <td className="px-4 py-3 text-gray-500">
+                    {service.healthResponseTime != null
+                      ? `${service.healthResponseTime}ms`
+                      : '-'}
+                  </td>
+                  <td className="px-4 py-3 text-gray-500">
+                    {formatRelativeTime(service.healthCheckedAt)}
+                  </td>
+                  <td className="px-4 py-3">
+                    <span
+                      className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                        service.isActive
+                          ? 'bg-green-100 text-green-800'
+                          : 'bg-red-100 text-red-800'
+                      }`}
+                    >
+                      {service.isActive ? 'Active' : 'Inactive'}
+                    </span>
+                  </td>
+                  <td className="px-4 py-3">
+                    <button
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        handleOpenEditService(service);
+                      }}
+                      className="text-blue-600 hover:text-blue-800 font-medium"
+                    >
+                      Edit
+                    </button>
+                  </td>
+                </tr>
+              );
+            })}
+            {services.length === 0 && (
+              <tr>
+                <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
+                  등록된 서비스가 없습니다.
+                </td>
+              </tr>
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      {selectedService && (
+        <div className="bg-white rounded-lg shadow">
+          <div className="flex items-center justify-between px-6 py-4 border-b">
+            <h2 className="text-lg font-semibold text-gray-900">
+              APIs for {selectedService.serviceName}
+            </h2>
+            <button
+              onClick={handleOpenCreateApi}
+              className="bg-blue-600 hover:bg-blue-700 text-white px-3 py-1.5 rounded-lg text-sm font-medium"
+            >
+              Add API
+            </button>
+          </div>
+          <div className="overflow-x-auto">
+            <table className="w-full divide-y divide-gray-200 text-sm">
+              <thead className="bg-gray-50">
+                <tr>
+                  <th className="px-4 py-3 text-left font-medium text-gray-500">Method</th>
+                  <th className="px-4 py-3 text-left font-medium text-gray-500">Path</th>
+                  <th className="px-4 py-3 text-left font-medium text-gray-500">Name</th>
+                  <th className="px-4 py-3 text-left font-medium text-gray-500">Description</th>
+                  <th className="px-4 py-3 text-left font-medium text-gray-500">Active</th>
+                </tr>
+              </thead>
+              <tbody className="divide-y divide-gray-200">
+                {serviceApis.map((api) => (
+                  <tr key={api.apiId} className="hover:bg-gray-50">
+                    <td className="px-4 py-3">
+                      <span
+                        className={`inline-block px-2 py-0.5 rounded text-xs font-bold ${
+                          METHOD_COLOR[api.apiMethod] || 'bg-gray-100 text-gray-800'
+                        }`}
+                      >
+                        {api.apiMethod}
+                      </span>
+                    </td>
+                    <td className="px-4 py-3 font-mono">{api.apiPath}</td>
+                    <td className="px-4 py-3">{api.apiName}</td>
+                    <td className="px-4 py-3 text-gray-500">{api.description || '-'}</td>
+                    <td className="px-4 py-3">
+                      <span
+                        className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                          api.isActive
+                            ? 'bg-green-100 text-green-800'
+                            : 'bg-red-100 text-red-800'
+                        }`}
+                      >
+                        {api.isActive ? 'Active' : 'Inactive'}
+                      </span>
+                    </td>
+                  </tr>
+                ))}
+                {serviceApis.length === 0 && (
+                  <tr>
+                    <td colSpan={5} className="px-4 py-8 text-center text-gray-400">
+                      등록된 API가 없습니다.
+                    </td>
+                  </tr>
+                )}
+              </tbody>
+            </table>
+          </div>
+        </div>
+      )}
+
+      {isServiceModalOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">
+                {editingService ? '서비스 수정' : '서비스 생성'}
+              </h2>
+            </div>
+            <form onSubmit={handleServiceSubmit}>
+              <div className="px-6 py-4 space-y-4 max-h-[70vh] overflow-y-auto">
+                {error && (
+                  <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+                )}
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Service Code
+                  </label>
+                  <input
+                    type="text"
+                    value={serviceCode}
+                    onChange={(e) => setServiceCode(e.target.value)}
+                    disabled={!!editingService}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none disabled:bg-gray-100 disabled:text-gray-500"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Service Name
+                  </label>
+                  <input
+                    type="text"
+                    value={serviceName}
+                    onChange={(e) => setServiceName(e.target.value)}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Service URL
+                  </label>
+                  <input
+                    type="text"
+                    value={serviceUrl}
+                    onChange={(e) => setServiceUrl(e.target.value)}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Description
+                  </label>
+                  <textarea
+                    value={serviceDescription}
+                    onChange={(e) => setServiceDescription(e.target.value)}
+                    rows={3}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Health Check URL
+                  </label>
+                  <input
+                    type="text"
+                    value={healthCheckUrl}
+                    onChange={(e) => setHealthCheckUrl(e.target.value)}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Health Check Interval (seconds)
+                  </label>
+                  <input
+                    type="number"
+                    value={healthCheckInterval}
+                    onChange={(e) => setHealthCheckInterval(Number(e.target.value))}
+                    min={10}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                {editingService && (
+                  <div className="flex items-center gap-2">
+                    <input
+                      type="checkbox"
+                      id="serviceIsActive"
+                      checked={serviceIsActive}
+                      onChange={(e) => setServiceIsActive(e.target.checked)}
+                      className="rounded"
+                    />
+                    <label htmlFor="serviceIsActive" className="text-sm text-gray-700">
+                      Active
+                    </label>
+                  </div>
+                )}
+              </div>
+              <div className="px-6 py-4 border-t flex justify-end gap-2">
+                <button
+                  type="button"
+                  onClick={handleCloseServiceModal}
+                  className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Cancel
+                </button>
+                <button
+                  type="submit"
+                  className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Save
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+
+      {isApiModalOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">API 생성</h2>
+            </div>
+            <form onSubmit={handleApiSubmit}>
+              <div className="px-6 py-4 space-y-4">
+                {error && (
+                  <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+                )}
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">Method</label>
+                  <select
+                    value={apiMethod}
+                    onChange={(e) => setApiMethod(e.target.value)}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  >
+                    <option value="GET">GET</option>
+                    <option value="POST">POST</option>
+                    <option value="PUT">PUT</option>
+                    <option value="DELETE">DELETE</option>
+                  </select>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">API Path</label>
+                  <input
+                    type="text"
+                    value={apiPath}
+                    onChange={(e) => setApiPath(e.target.value)}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">API Name</label>
+                  <input
+                    type="text"
+                    value={apiName}
+                    onChange={(e) => setApiName(e.target.value)}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Description
+                  </label>
+                  <textarea
+                    value={apiDescription}
+                    onChange={(e) => setApiDescription(e.target.value)}
+                    rows={3}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+              </div>
+              <div className="px-6 py-4 border-t flex justify-end gap-2">
+                <button
+                  type="button"
+                  onClick={handleCloseApiModal}
+                  className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Cancel
+                </button>
+                <button
+                  type="submit"
+                  className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Save
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default ServicesPage;
diff --git a/frontend/src/pages/admin/TenantsPage.tsx b/frontend/src/pages/admin/TenantsPage.tsx
new file mode 100644
index 0000000..300b27b
--- /dev/null
+++ b/frontend/src/pages/admin/TenantsPage.tsx
@@ -0,0 +1,256 @@
+import { useState, useEffect } from 'react';
+import type { Tenant, CreateTenantRequest, UpdateTenantRequest } from '../../types/tenant';
+import { getTenants, createTenant, updateTenant } from '../../services/tenantService';
+
+const TenantsPage = () => {
+  const [tenants, setTenants] = useState<Tenant[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [isModalOpen, setIsModalOpen] = useState(false);
+  const [editingTenant, setEditingTenant] = useState<Tenant | null>(null);
+
+  const [tenantCode, setTenantCode] = useState('');
+  const [tenantName, setTenantName] = useState('');
+  const [description, setDescription] = useState('');
+  const [isActive, setIsActive] = useState(true);
+
+  const fetchTenants = async () => {
+    try {
+      setLoading(true);
+      const res = await getTenants();
+      if (res.success && res.data) {
+        setTenants(res.data);
+      } else {
+        setError(res.message || '테넌트 목록을 불러오는데 실패했습니다.');
+      }
+    } catch {
+      setError('테넌트 목록을 불러오는데 실패했습니다.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    fetchTenants();
+  }, []);
+
+  const handleOpenCreate = () => {
+    setEditingTenant(null);
+    setTenantCode('');
+    setTenantName('');
+    setDescription('');
+    setIsActive(true);
+    setIsModalOpen(true);
+  };
+
+  const handleOpenEdit = (tenant: Tenant) => {
+    setEditingTenant(tenant);
+    setTenantCode(tenant.tenantCode);
+    setTenantName(tenant.tenantName);
+    setDescription(tenant.description || '');
+    setIsActive(tenant.isActive);
+    setIsModalOpen(true);
+  };
+
+  const handleCloseModal = () => {
+    setIsModalOpen(false);
+    setEditingTenant(null);
+    setError(null);
+  };
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+
+    try {
+      if (editingTenant) {
+        const req: UpdateTenantRequest = {
+          tenantName,
+          description: description || undefined,
+          isActive,
+        };
+        const res = await updateTenant(editingTenant.tenantId, req);
+        if (!res.success) {
+          setError(res.message || '테넌트 수정에 실패했습니다.');
+          return;
+        }
+      } else {
+        const req: CreateTenantRequest = {
+          tenantCode,
+          tenantName,
+          description: description || undefined,
+        };
+        const res = await createTenant(req);
+        if (!res.success) {
+          setError(res.message || '테넌트 생성에 실패했습니다.');
+          return;
+        }
+      }
+      handleCloseModal();
+      await fetchTenants();
+    } catch {
+      setError(editingTenant ? '테넌트 수정에 실패했습니다.' : '테넌트 생성에 실패했습니다.');
+    }
+  };
+
+  if (loading) {
+    return <div className="text-center py-10 text-gray-500">로딩 중...</div>;
+  }
+
+  return (
+    <div>
+      <div className="flex items-center justify-between mb-6">
+        <h1 className="text-2xl font-bold text-gray-900">Tenants</h1>
+        <button
+          onClick={handleOpenCreate}
+          className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+        >
+          Create Tenant
+        </button>
+      </div>
+
+      {error && !isModalOpen && (
+        <div className="mb-4 p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      )}
+
+      <div className="overflow-x-auto bg-white rounded-lg shadow">
+        <table className="w-full divide-y divide-gray-200 text-sm">
+          <thead className="bg-gray-50">
+            <tr>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Code</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Name</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Description</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Active</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Created</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Actions</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-200">
+            {tenants.map((tenant) => (
+              <tr key={tenant.tenantId} className="hover:bg-gray-50">
+                <td className="px-4 py-3 font-mono">{tenant.tenantCode}</td>
+                <td className="px-4 py-3">{tenant.tenantName}</td>
+                <td className="px-4 py-3 text-gray-500">{tenant.description || '-'}</td>
+                <td className="px-4 py-3">
+                  <span
+                    className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                      tenant.isActive
+                        ? 'bg-green-100 text-green-800'
+                        : 'bg-red-100 text-red-800'
+                    }`}
+                  >
+                    {tenant.isActive ? 'Active' : 'Inactive'}
+                  </span>
+                </td>
+                <td className="px-4 py-3 text-gray-500">
+                  {new Date(tenant.createdAt).toLocaleDateString()}
+                </td>
+                <td className="px-4 py-3">
+                  <button
+                    onClick={() => handleOpenEdit(tenant)}
+                    className="text-blue-600 hover:text-blue-800 font-medium"
+                  >
+                    Edit
+                  </button>
+                </td>
+              </tr>
+            ))}
+            {tenants.length === 0 && (
+              <tr>
+                <td colSpan={6} className="px-4 py-8 text-center text-gray-400">
+                  등록된 테넌트가 없습니다.
+                </td>
+              </tr>
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      {isModalOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">
+                {editingTenant ? '테넌트 수정' : '테넌트 생성'}
+              </h2>
+            </div>
+            <form onSubmit={handleSubmit}>
+              <div className="px-6 py-4 space-y-4">
+                {error && (
+                  <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+                )}
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Tenant Code
+                  </label>
+                  <input
+                    type="text"
+                    value={tenantCode}
+                    onChange={(e) => setTenantCode(e.target.value)}
+                    disabled={!!editingTenant}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none disabled:bg-gray-100 disabled:text-gray-500"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Tenant Name
+                  </label>
+                  <input
+                    type="text"
+                    value={tenantName}
+                    onChange={(e) => setTenantName(e.target.value)}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    Description
+                  </label>
+                  <textarea
+                    value={description}
+                    onChange={(e) => setDescription(e.target.value)}
+                    rows={3}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                {editingTenant && (
+                  <div className="flex items-center gap-2">
+                    <input
+                      type="checkbox"
+                      id="isActive"
+                      checked={isActive}
+                      onChange={(e) => setIsActive(e.target.checked)}
+                      className="rounded"
+                    />
+                    <label htmlFor="isActive" className="text-sm text-gray-700">
+                      Active
+                    </label>
+                  </div>
+                )}
+              </div>
+              <div className="px-6 py-4 border-t flex justify-end gap-2">
+                <button
+                  type="button"
+                  onClick={handleCloseModal}
+                  className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Cancel
+                </button>
+                <button
+                  type="submit"
+                  className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Save
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default TenantsPage;
diff --git a/frontend/src/pages/admin/UsersPage.tsx b/frontend/src/pages/admin/UsersPage.tsx
new file mode 100644
index 0000000..f2adbcc
--- /dev/null
+++ b/frontend/src/pages/admin/UsersPage.tsx
@@ -0,0 +1,352 @@
+import { useState, useEffect } from 'react';
+import type { UserDetail, CreateUserRequest, UpdateUserRequest } from '../../types/user';
+import type { Tenant } from '../../types/tenant';
+import { getUsers, createUser, updateUser, deactivateUser } from '../../services/userService';
+import { getTenants } from '../../services/tenantService';
+
+const ROLE_BADGE: Record<string, string> = {
+  ADMIN: 'bg-red-100 text-red-800',
+  MANAGER: 'bg-orange-100 text-orange-800',
+  USER: 'bg-blue-100 text-blue-800',
+  VIEWER: 'bg-gray-100 text-gray-800',
+};
+
+const UsersPage = () => {
+  const [users, setUsers] = useState<UserDetail[]>([]);
+  const [tenants, setTenants] = useState<Tenant[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [isModalOpen, setIsModalOpen] = useState(false);
+  const [editingUser, setEditingUser] = useState<UserDetail | null>(null);
+
+  const [loginId, setLoginId] = useState('');
+  const [password, setPassword] = useState('');
+  const [userName, setUserName] = useState('');
+  const [email, setEmail] = useState('');
+  const [tenantId, setTenantId] = useState<string>('');
+  const [role, setRole] = useState('USER');
+  const [isActive, setIsActive] = useState(true);
+
+  const fetchData = async () => {
+    try {
+      setLoading(true);
+      const [usersRes, tenantsRes] = await Promise.all([getUsers(), getTenants()]);
+      if (usersRes.success && usersRes.data) {
+        setUsers(usersRes.data);
+      }
+      if (tenantsRes.success && tenantsRes.data) {
+        setTenants(tenantsRes.data);
+      }
+    } catch {
+      setError('데이터를 불러오는데 실패했습니다.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    fetchData();
+  }, []);
+
+  const handleOpenCreate = () => {
+    setEditingUser(null);
+    setLoginId('');
+    setPassword('');
+    setUserName('');
+    setEmail('');
+    setTenantId('');
+    setRole('USER');
+    setIsActive(true);
+    setIsModalOpen(true);
+  };
+
+  const handleOpenEdit = (user: UserDetail) => {
+    setEditingUser(user);
+    setLoginId(user.loginId);
+    setPassword('');
+    setUserName(user.userName);
+    setEmail(user.email || '');
+    setTenantId(user.tenantId ? String(user.tenantId) : '');
+    setRole(user.role);
+    setIsActive(user.isActive);
+    setIsModalOpen(true);
+  };
+
+  const handleCloseModal = () => {
+    setIsModalOpen(false);
+    setEditingUser(null);
+    setError(null);
+  };
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+
+    try {
+      if (editingUser) {
+        const req: UpdateUserRequest = {
+          tenantId: tenantId ? Number(tenantId) : undefined,
+          userName,
+          email: email || undefined,
+          role,
+          password: password || undefined,
+          isActive,
+        };
+        const res = await updateUser(editingUser.userId, req);
+        if (!res.success) {
+          setError(res.message || '사용자 수정에 실패했습니다.');
+          return;
+        }
+      } else {
+        const req: CreateUserRequest = {
+          tenantId: tenantId ? Number(tenantId) : undefined,
+          loginId,
+          password,
+          userName,
+          email: email || undefined,
+          role,
+        };
+        const res = await createUser(req);
+        if (!res.success) {
+          setError(res.message || '사용자 생성에 실패했습니다.');
+          return;
+        }
+      }
+      handleCloseModal();
+      await fetchData();
+    } catch {
+      setError(editingUser ? '사용자 수정에 실패했습니다.' : '사용자 생성에 실패했습니다.');
+    }
+  };
+
+  const handleDeactivate = async (user: UserDetail) => {
+    if (!confirm(`'${user.userName}' 사용자를 비활성화하시겠습니까?`)) return;
+
+    try {
+      const res = await deactivateUser(user.userId);
+      if (!res.success) {
+        setError(res.message || '사용자 비활성화에 실패했습니다.');
+        return;
+      }
+      await fetchData();
+    } catch {
+      setError('사용자 비활성화에 실패했습니다.');
+    }
+  };
+
+  if (loading) {
+    return <div className="text-center py-10 text-gray-500">로딩 중...</div>;
+  }
+
+  return (
+    <div>
+      <div className="flex items-center justify-between mb-6">
+        <h1 className="text-2xl font-bold text-gray-900">Users</h1>
+        <button
+          onClick={handleOpenCreate}
+          className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+        >
+          Create User
+        </button>
+      </div>
+
+      {error && !isModalOpen && (
+        <div className="mb-4 p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      )}
+
+      <div className="overflow-x-auto bg-white rounded-lg shadow">
+        <table className="w-full divide-y divide-gray-200 text-sm">
+          <thead className="bg-gray-50">
+            <tr>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Login ID</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Name</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Email</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Tenant</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Role</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Active</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Last Login</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Actions</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-200">
+            {users.map((user) => (
+              <tr key={user.userId} className="hover:bg-gray-50">
+                <td className="px-4 py-3 font-mono">{user.loginId}</td>
+                <td className="px-4 py-3">{user.userName}</td>
+                <td className="px-4 py-3 text-gray-500">{user.email || '-'}</td>
+                <td className="px-4 py-3 text-gray-500">{user.tenantName || '-'}</td>
+                <td className="px-4 py-3">
+                  <span
+                    className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                      ROLE_BADGE[user.role] || 'bg-gray-100 text-gray-800'
+                    }`}
+                  >
+                    {user.role}
+                  </span>
+                </td>
+                <td className="px-4 py-3">
+                  <span
+                    className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                      user.isActive
+                        ? 'bg-green-100 text-green-800'
+                        : 'bg-red-100 text-red-800'
+                    }`}
+                  >
+                    {user.isActive ? 'Active' : 'Inactive'}
+                  </span>
+                </td>
+                <td className="px-4 py-3 text-gray-500">
+                  {user.lastLoginAt
+                    ? new Date(user.lastLoginAt).toLocaleString()
+                    : '-'}
+                </td>
+                <td className="px-4 py-3 space-x-2">
+                  <button
+                    onClick={() => handleOpenEdit(user)}
+                    className="text-blue-600 hover:text-blue-800 font-medium"
+                  >
+                    Edit
+                  </button>
+                  {user.isActive && (
+                    <button
+                      onClick={() => handleDeactivate(user)}
+                      className="text-red-600 hover:text-red-800 font-medium"
+                    >
+                      비활성화
+                    </button>
+                  )}
+                </td>
+              </tr>
+            ))}
+            {users.length === 0 && (
+              <tr>
+                <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
+                  등록된 사용자가 없습니다.
+                </td>
+              </tr>
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      {isModalOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">
+                {editingUser ? '사용자 수정' : '사용자 생성'}
+              </h2>
+            </div>
+            <form onSubmit={handleSubmit}>
+              <div className="px-6 py-4 space-y-4 max-h-[70vh] overflow-y-auto">
+                {error && (
+                  <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+                )}
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">Login ID</label>
+                  <input
+                    type="text"
+                    value={loginId}
+                    onChange={(e) => setLoginId(e.target.value)}
+                    disabled={!!editingUser}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none disabled:bg-gray-100 disabled:text-gray-500"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">Password</label>
+                  <input
+                    type="password"
+                    value={password}
+                    onChange={(e) => setPassword(e.target.value)}
+                    required={!editingUser}
+                    placeholder={editingUser ? '변경 시 입력' : ''}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">User Name</label>
+                  <input
+                    type="text"
+                    value={userName}
+                    onChange={(e) => setUserName(e.target.value)}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">Email</label>
+                  <input
+                    type="email"
+                    value={email}
+                    onChange={(e) => setEmail(e.target.value)}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">Tenant</label>
+                  <select
+                    value={tenantId}
+                    onChange={(e) => setTenantId(e.target.value)}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  >
+                    <option value="">-- 선택 --</option>
+                    {tenants.map((t) => (
+                      <option key={t.tenantId} value={t.tenantId}>
+                        {t.tenantName}
+                      </option>
+                    ))}
+                  </select>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">Role</label>
+                  <select
+                    value={role}
+                    onChange={(e) => setRole(e.target.value)}
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  >
+                    <option value="ADMIN">ADMIN</option>
+                    <option value="MANAGER">MANAGER</option>
+                    <option value="USER">USER</option>
+                    <option value="VIEWER">VIEWER</option>
+                  </select>
+                </div>
+                {editingUser && (
+                  <div className="flex items-center gap-2">
+                    <input
+                      type="checkbox"
+                      id="isActive"
+                      checked={isActive}
+                      onChange={(e) => setIsActive(e.target.checked)}
+                      className="rounded"
+                    />
+                    <label htmlFor="isActive" className="text-sm text-gray-700">
+                      Active
+                    </label>
+                  </div>
+                )}
+              </div>
+              <div className="px-6 py-4 border-t flex justify-end gap-2">
+                <button
+                  type="button"
+                  onClick={handleCloseModal}
+                  className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Cancel
+                </button>
+                <button
+                  type="submit"
+                  className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  Save
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default UsersPage;
diff --git a/frontend/src/pages/apikeys/KeyAdminPage.tsx b/frontend/src/pages/apikeys/KeyAdminPage.tsx
new file mode 100644
index 0000000..0df4f22
--- /dev/null
+++ b/frontend/src/pages/apikeys/KeyAdminPage.tsx
@@ -0,0 +1,778 @@
+import { useState, useEffect, useCallback } from 'react';
+import type { ApiKey, ApiKeyDetail, ApiKeyRequest } from '../../types/apikey';
+import type { ServiceInfo, ServiceApi } from '../../types/service';
+import {
+  getAllKeys,
+  getKeyDetail,
+  revokeKey,
+  getAllRequests,
+  reviewRequest,
+  getPermissions,
+  updatePermissions,
+} from '../../services/apiKeyService';
+import { getServices, getServiceApis } from '../../services/serviceService';
+
+const STATUS_BADGE: Record<string, string> = {
+  ACTIVE: 'bg-green-100 text-green-800',
+  PENDING: 'bg-yellow-100 text-yellow-800',
+  REVOKED: 'bg-red-100 text-red-800',
+  EXPIRED: 'bg-gray-100 text-gray-800',
+  INACTIVE: 'bg-gray-100 text-gray-800',
+  APPROVED: 'bg-green-100 text-green-800',
+  REJECTED: 'bg-red-100 text-red-800',
+};
+
+const METHOD_COLOR: Record<string, string> = {
+  GET: 'bg-green-100 text-green-800',
+  POST: 'bg-blue-100 text-blue-800',
+  PUT: 'bg-orange-100 text-orange-800',
+  DELETE: 'bg-red-100 text-red-800',
+};
+
+const formatDateTime = (dateStr: string | null): string => {
+  if (!dateStr) return '-';
+  return new Date(dateStr).toLocaleString('ko-KR');
+};
+
+interface AllApisMap {
+  services: ServiceInfo[];
+  apisByService: Record<number, ServiceApi[]>;
+  apiById: Record<number, ServiceApi & { serviceName: string }>;
+}
+
+const KeyAdminPage = () => {
+  const [activeTab, setActiveTab] = useState<'requests' | 'keys'>('requests');
+
+  // Shared state
+  const [allApisMap, setAllApisMap] = useState<AllApisMap>({ services: [], apisByService: {}, apiById: {} });
+  const [error, setError] = useState<string | null>(null);
+
+  // Requests tab state
+  const [requests, setRequests] = useState<ApiKeyRequest[]>([]);
+  const [requestsLoading, setRequestsLoading] = useState(true);
+  const [isReviewModalOpen, setIsReviewModalOpen] = useState(false);
+  const [selectedRequest, setSelectedRequest] = useState<ApiKeyRequest | null>(null);
+  const [adjustedApiIds, setAdjustedApiIds] = useState<Set<number>>(new Set());
+  const [reviewComment, setReviewComment] = useState('');
+  const [adjustedFromDate, setAdjustedFromDate] = useState('');
+  const [adjustedToDate, setAdjustedToDate] = useState('');
+
+  // Keys tab state
+  const [allKeys, setAllKeys] = useState<ApiKey[]>([]);
+  const [keysLoading, setKeysLoading] = useState(true);
+  const [isDetailModalOpen, setIsDetailModalOpen] = useState(false);
+  const [selectedKeyDetail, setSelectedKeyDetail] = useState<ApiKeyDetail | null>(null);
+  const [isPermissionModalOpen, setIsPermissionModalOpen] = useState(false);
+  const [permissionKeyId, setPermissionKeyId] = useState<number | null>(null);
+  const [permissionKeyName, setPermissionKeyName] = useState('');
+  const [permissionApiIds, setPermissionApiIds] = useState<Set<number>>(new Set());
+  const [detailCopied, setDetailCopied] = useState(false);
+
+  // Raw key modal (after approve)
+  const [rawKeyModal, setRawKeyModal] = useState<{ keyName: string; rawKey: string } | null>(null);
+  const [rawKeyCopied, setRawKeyCopied] = useState(false);
+
+  const fetchAllApis = useCallback(async () => {
+    try {
+      const servicesRes = await getServices();
+      if (servicesRes.success && servicesRes.data) {
+        const services = servicesRes.data;
+        const apisByService: Record<number, ServiceApi[]> = {};
+        const apiById: Record<number, ServiceApi & { serviceName: string }> = {};
+
+        await Promise.all(
+          services.map(async (service) => {
+            const apisRes = await getServiceApis(service.serviceId);
+            if (apisRes.success && apisRes.data) {
+              apisByService[service.serviceId] = apisRes.data;
+              apisRes.data.forEach((api) => {
+                apiById[api.apiId] = { ...api, serviceName: service.serviceName };
+              });
+            }
+          }),
+        );
+
+        setAllApisMap({ services, apisByService, apiById });
+      }
+    } catch {
+      // Silently fail for API map loading
+    }
+  }, []);
+
+  const fetchRequests = useCallback(async () => {
+    try {
+      setRequestsLoading(true);
+      const res = await getAllRequests();
+      if (res.success && res.data) {
+        setRequests(res.data);
+      }
+    } catch {
+      setError('신청 목록을 불러오는데 실패했습니다.');
+    } finally {
+      setRequestsLoading(false);
+    }
+  }, []);
+
+  const fetchKeys = useCallback(async () => {
+    try {
+      setKeysLoading(true);
+      const res = await getAllKeys();
+      if (res.success && res.data) {
+        setAllKeys(res.data);
+      }
+    } catch {
+      setError('키 목록을 불러오는데 실패했습니다.');
+    } finally {
+      setKeysLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    fetchAllApis();
+    fetchRequests();
+    fetchKeys();
+  }, [fetchAllApis, fetchRequests, fetchKeys]);
+
+  // --- Requests tab handlers ---
+
+  const handleOpenReview = (req: ApiKeyRequest) => {
+    setSelectedRequest(req);
+    setAdjustedApiIds(new Set(req.requestedApiIds));
+    setReviewComment('');
+    setAdjustedFromDate(req.usageFromDate ? req.usageFromDate.split('T')[0] : '');
+    setAdjustedToDate(req.usageToDate ? req.usageToDate.split('T')[0] : '');
+    setError(null);
+    setIsReviewModalOpen(true);
+  };
+
+  const handleCloseReview = () => {
+    setIsReviewModalOpen(false);
+    setSelectedRequest(null);
+    setError(null);
+  };
+
+  const handleToggleReviewApi = (apiId: number) => {
+    setAdjustedApiIds((prev) => {
+      const next = new Set(prev);
+      if (next.has(apiId)) {
+        next.delete(apiId);
+      } else {
+        next.add(apiId);
+      }
+      return next;
+    });
+  };
+
+  const handleReviewSubmit = async (status: 'APPROVED' | 'REJECTED') => {
+    if (!selectedRequest) return;
+    setError(null);
+
+    try {
+      const res = await reviewRequest(selectedRequest.requestId, {
+        status,
+        reviewComment: reviewComment || undefined,
+        adjustedApiIds: status === 'APPROVED' ? Array.from(adjustedApiIds) : undefined,
+        adjustedFromDate: status === 'APPROVED' && adjustedFromDate ? adjustedFromDate : undefined,
+        adjustedToDate: status === 'APPROVED' && adjustedToDate ? adjustedToDate : undefined,
+      });
+
+      if (res.success) {
+        handleCloseReview();
+        await fetchRequests();
+        await fetchKeys();
+
+        if (status === 'APPROVED' && res.data) {
+          setRawKeyModal({ keyName: res.data.keyName, rawKey: res.data.rawKey });
+        }
+      } else {
+        setError(res.message || '검토 처리에 실패했습니다.');
+      }
+    } catch {
+      setError('검토 처리에 실패했습니다.');
+    }
+  };
+
+  // --- Keys tab handlers ---
+
+  const handleViewDetail = async (key: ApiKey) => {
+    setError(null);
+    try {
+      const res = await getKeyDetail(key.apiKeyId);
+      if (res.success && res.data) {
+        setSelectedKeyDetail(res.data);
+        setDetailCopied(false);
+        setIsDetailModalOpen(true);
+      } else {
+        setError(res.message || '키 상세 정보를 불러오는데 실패했습니다.');
+      }
+    } catch {
+      setError('키 상세 정보를 불러오는데 실패했습니다.');
+    }
+  };
+
+  const handleCopyDecryptedKey = async () => {
+    if (!selectedKeyDetail) return;
+    await navigator.clipboard.writeText(selectedKeyDetail.decryptedKey);
+    setDetailCopied(true);
+    setTimeout(() => setDetailCopied(false), 2000);
+  };
+
+  const handleOpenPermissions = async (key: ApiKey) => {
+    setError(null);
+    setPermissionKeyId(key.apiKeyId);
+    setPermissionKeyName(key.keyName);
+
+    try {
+      const res = await getPermissions(key.apiKeyId);
+      if (res.success && res.data) {
+        setPermissionApiIds(new Set(res.data.map((p) => p.apiId)));
+      } else {
+        setPermissionApiIds(new Set());
+      }
+      setIsPermissionModalOpen(true);
+    } catch {
+      setError('권한 정보를 불러오는데 실패했습니다.');
+    }
+  };
+
+  const handleTogglePermissionApi = (apiId: number) => {
+    setPermissionApiIds((prev) => {
+      const next = new Set(prev);
+      if (next.has(apiId)) {
+        next.delete(apiId);
+      } else {
+        next.add(apiId);
+      }
+      return next;
+    });
+  };
+
+  const handleSavePermissions = async () => {
+    if (permissionKeyId === null) return;
+    setError(null);
+
+    try {
+      const res = await updatePermissions(permissionKeyId, {
+        apiIds: Array.from(permissionApiIds),
+      });
+      if (res.success) {
+        setIsPermissionModalOpen(false);
+        setPermissionKeyId(null);
+      } else {
+        setError(res.message || '권한 저장에 실패했습니다.');
+      }
+    } catch {
+      setError('권한 저장에 실패했습니다.');
+    }
+  };
+
+  const handleRevokeKey = async (key: ApiKey) => {
+    if (!window.confirm(`'${key.keyName}' 키를 폐기하시겠습니까? 이 작업은 되돌릴 수 없습니다.`)) return;
+
+    try {
+      const res = await revokeKey(key.apiKeyId);
+      if (res.success) {
+        await fetchKeys();
+      } else {
+        setError(res.message || '키 폐기에 실패했습니다.');
+      }
+    } catch {
+      setError('키 폐기에 실패했습니다.');
+    }
+  };
+
+  const handleCopyRawKey = async () => {
+    if (!rawKeyModal) return;
+    await navigator.clipboard.writeText(rawKeyModal.rawKey);
+    setRawKeyCopied(true);
+    setTimeout(() => setRawKeyCopied(false), 2000);
+  };
+
+  // --- Render helpers ---
+
+  const renderApiCheckboxes = (
+    selectedIds: Set<number>,
+    onToggle: (apiId: number) => void,
+  ) => {
+    return allApisMap.services.map((service) => {
+      const apis = allApisMap.apisByService[service.serviceId] || [];
+      if (apis.length === 0) return null;
+
+      return (
+        <div key={service.serviceId} className="mb-3">
+          <h4 className="text-sm font-medium text-gray-700 mb-1">{service.serviceName}</h4>
+          <div className="space-y-1 pl-4">
+            {apis.map((api) => (
+              <label
+                key={api.apiId}
+                className="flex items-center gap-2 py-0.5 cursor-pointer hover:bg-gray-50 rounded px-1"
+              >
+                <input
+                  type="checkbox"
+                  checked={selectedIds.has(api.apiId)}
+                  onChange={() => onToggle(api.apiId)}
+                  className="rounded"
+                />
+                <span
+                  className={`inline-block px-1.5 py-0.5 rounded text-xs font-bold ${
+                    METHOD_COLOR[api.apiMethod] || 'bg-gray-100 text-gray-800'
+                  }`}
+                >
+                  {api.apiMethod}
+                </span>
+                <span className="font-mono text-sm text-gray-700">{api.apiPath}</span>
+                <span className="text-sm text-gray-500">- {api.apiName}</span>
+              </label>
+            ))}
+          </div>
+        </div>
+      );
+    });
+  };
+
+  return (
+    <div>
+      <h1 className="text-2xl font-bold text-gray-900 mb-6">API Key 관리</h1>
+
+      {error && !isReviewModalOpen && !isDetailModalOpen && !isPermissionModalOpen && (
+        <div className="mb-4 p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      )}
+
+      {/* Tabs */}
+      <div className="flex border-b mb-6">
+        <button
+          onClick={() => setActiveTab('requests')}
+          className={`px-4 py-2 text-sm font-medium -mb-px ${
+            activeTab === 'requests'
+              ? 'border-b-2 border-blue-600 text-blue-600'
+              : 'text-gray-500 hover:text-gray-700'
+          }`}
+        >
+          신청 관리
+        </button>
+        <button
+          onClick={() => setActiveTab('keys')}
+          className={`px-4 py-2 text-sm font-medium -mb-px ${
+            activeTab === 'keys'
+              ? 'border-b-2 border-blue-600 text-blue-600'
+              : 'text-gray-500 hover:text-gray-700'
+          }`}
+        >
+          키 관리
+        </button>
+      </div>
+
+      {/* Tab: 신청 관리 */}
+      {activeTab === 'requests' && (
+        <div>
+          {requestsLoading ? (
+            <div className="text-center py-10 text-gray-500">로딩 중...</div>
+          ) : (
+            <div className="overflow-x-auto bg-white rounded-lg shadow">
+              <table className="w-full divide-y divide-gray-200 text-sm">
+                <thead className="bg-gray-50">
+                  <tr>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Requester</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Key Name</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Purpose</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Status</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">APIs</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Created At</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Actions</th>
+                  </tr>
+                </thead>
+                <tbody className="divide-y divide-gray-200">
+                  {requests.map((req) => (
+                    <tr key={req.requestId} className="hover:bg-gray-50">
+                      <td className="px-4 py-3">{req.userName}</td>
+                      <td className="px-4 py-3">{req.keyName}</td>
+                      <td className="px-4 py-3 text-gray-500 max-w-[200px] truncate">
+                        {req.purpose || '-'}
+                      </td>
+                      <td className="px-4 py-3">
+                        <span
+                          className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                            STATUS_BADGE[req.status] || 'bg-gray-100 text-gray-800'
+                          }`}
+                        >
+                          {req.status}
+                        </span>
+                      </td>
+                      <td className="px-4 py-3 text-gray-500">{req.requestedApiIds.length}개</td>
+                      <td className="px-4 py-3 text-gray-500">{formatDateTime(req.createdAt)}</td>
+                      <td className="px-4 py-3">
+                        {req.status === 'PENDING' && (
+                          <button
+                            onClick={() => handleOpenReview(req)}
+                            className="text-blue-600 hover:text-blue-800 font-medium text-sm"
+                          >
+                            검토
+                          </button>
+                        )}
+                      </td>
+                    </tr>
+                  ))}
+                  {requests.length === 0 && (
+                    <tr>
+                      <td colSpan={7} className="px-4 py-8 text-center text-gray-400">
+                        신청 내역이 없습니다.
+                      </td>
+                    </tr>
+                  )}
+                </tbody>
+              </table>
+            </div>
+          )}
+        </div>
+      )}
+
+      {/* Tab: 키 관리 */}
+      {activeTab === 'keys' && (
+        <div>
+          {keysLoading ? (
+            <div className="text-center py-10 text-gray-500">로딩 중...</div>
+          ) : (
+            <div className="overflow-x-auto bg-white rounded-lg shadow">
+              <table className="w-full divide-y divide-gray-200 text-sm">
+                <thead className="bg-gray-50">
+                  <tr>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Key Name</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Prefix</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">User</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Status</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Last Used</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Created</th>
+                    <th className="px-4 py-3 text-left font-medium text-gray-500">Actions</th>
+                  </tr>
+                </thead>
+                <tbody className="divide-y divide-gray-200">
+                  {allKeys.map((key) => (
+                    <tr key={key.apiKeyId} className="hover:bg-gray-50">
+                      <td className="px-4 py-3">{key.keyName}</td>
+                      <td className="px-4 py-3 font-mono text-gray-600">{key.apiKeyPrefix}</td>
+                      <td className="px-4 py-3 text-gray-500">{key.maskedKey}</td>
+                      <td className="px-4 py-3">
+                        <span
+                          className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                            STATUS_BADGE[key.status] || 'bg-gray-100 text-gray-800'
+                          }`}
+                        >
+                          {key.status}
+                        </span>
+                      </td>
+                      <td className="px-4 py-3 text-gray-500">{formatDateTime(key.lastUsedAt)}</td>
+                      <td className="px-4 py-3 text-gray-500">{formatDateTime(key.createdAt)}</td>
+                      <td className="px-4 py-3">
+                        <div className="flex gap-2">
+                          <button
+                            onClick={() => handleViewDetail(key)}
+                            className="text-blue-600 hover:text-blue-800 font-medium text-sm"
+                          >
+                            상세
+                          </button>
+                          <button
+                            onClick={() => handleOpenPermissions(key)}
+                            className="text-purple-600 hover:text-purple-800 font-medium text-sm"
+                          >
+                            권한
+                          </button>
+                          {key.status === 'ACTIVE' && (
+                            <button
+                              onClick={() => handleRevokeKey(key)}
+                              className="text-red-600 hover:text-red-800 font-medium text-sm"
+                            >
+                              폐기
+                            </button>
+                          )}
+                        </div>
+                      </td>
+                    </tr>
+                  ))}
+                  {allKeys.length === 0 && (
+                    <tr>
+                      <td colSpan={7} className="px-4 py-8 text-center text-gray-400">
+                        등록된 API Key가 없습니다.
+                      </td>
+                    </tr>
+                  )}
+                </tbody>
+              </table>
+            </div>
+          )}
+        </div>
+      )}
+
+      {/* Review Modal */}
+      {isReviewModalOpen && selectedRequest && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-2xl mx-4 max-h-[90vh] flex flex-col">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">신청 검토</h2>
+            </div>
+            <div className="px-6 py-4 space-y-4 overflow-y-auto flex-1">
+              {error && (
+                <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+              )}
+
+              <div className="grid grid-cols-2 gap-4">
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">신청자</label>
+                  <p className="text-gray-900">{selectedRequest.userName}</p>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">Key Name</label>
+                  <p className="text-gray-900">{selectedRequest.keyName}</p>
+                </div>
+              </div>
+              {selectedRequest.purpose && (
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">목적</label>
+                  <p className="text-gray-900">{selectedRequest.purpose}</p>
+                </div>
+              )}
+
+              <div className="grid grid-cols-2 gap-4">
+                {selectedRequest.serviceIp && (
+                  <div>
+                    <label className="block text-sm font-medium text-gray-500">서비스 IP</label>
+                    <p className="font-mono text-gray-900">{selectedRequest.serviceIp}</p>
+                  </div>
+                )}
+                {selectedRequest.servicePurpose && (
+                  <div>
+                    <label className="block text-sm font-medium text-gray-500">서비스 용도</label>
+                    <p className="text-gray-900">{selectedRequest.servicePurpose}</p>
+                  </div>
+                )}
+                {selectedRequest.dailyRequestEstimate != null && (
+                  <div>
+                    <label className="block text-sm font-medium text-gray-500">하루 예상 요청량</label>
+                    <p className="text-gray-900">{Number(selectedRequest.dailyRequestEstimate).toLocaleString()}건</p>
+                  </div>
+                )}
+              </div>
+
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">사용 기간 (조정 가능)</label>
+                <div className="flex items-center gap-2">
+                  <input type="date" value={adjustedFromDate}
+                    onChange={(e) => setAdjustedFromDate(e.target.value)}
+                    className="border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none" />
+                  <span className="text-gray-500">~</span>
+                  <input type="date" value={adjustedToDate}
+                    onChange={(e) => setAdjustedToDate(e.target.value)}
+                    className="border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none" />
+                </div>
+              </div>
+
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-2">
+                  API 권한 ({adjustedApiIds.size}개 선택)
+                </label>
+                <div className="border rounded-lg p-3 max-h-60 overflow-y-auto">
+                  {renderApiCheckboxes(adjustedApiIds, handleToggleReviewApi)}
+                </div>
+              </div>
+
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">검토 의견</label>
+                <textarea
+                  value={reviewComment}
+                  onChange={(e) => setReviewComment(e.target.value)}
+                  rows={3}
+                  placeholder="검토 의견을 입력하세요"
+                  className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                />
+              </div>
+            </div>
+            <div className="px-6 py-4 border-t flex justify-end gap-2">
+              <button
+                type="button"
+                onClick={handleCloseReview}
+                className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                취소
+              </button>
+              <button
+                onClick={() => handleReviewSubmit('REJECTED')}
+                className="bg-red-600 hover:bg-red-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                반려
+              </button>
+              <button
+                onClick={() => handleReviewSubmit('APPROVED')}
+                className="bg-green-600 hover:bg-green-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                승인
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Detail Modal */}
+      {isDetailModalOpen && selectedKeyDetail && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-lg mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">키 상세 정보</h2>
+            </div>
+            <div className="px-6 py-4 space-y-3">
+              <div className="grid grid-cols-2 gap-3">
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">Key Name</label>
+                  <p className="text-gray-900">{selectedKeyDetail.keyName}</p>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">User</label>
+                  <p className="text-gray-900">{selectedKeyDetail.userName}</p>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">Prefix</label>
+                  <p className="font-mono text-gray-900">{selectedKeyDetail.apiKeyPrefix}</p>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">Status</label>
+                  <span
+                    className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                      STATUS_BADGE[selectedKeyDetail.status] || 'bg-gray-100 text-gray-800'
+                    }`}
+                  >
+                    {selectedKeyDetail.status}
+                  </span>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">Expires At</label>
+                  <p className="text-gray-900">{formatDateTime(selectedKeyDetail.expiresAt)}</p>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">Last Used</label>
+                  <p className="text-gray-900">{formatDateTime(selectedKeyDetail.lastUsedAt)}</p>
+                </div>
+                <div>
+                  <label className="block text-sm font-medium text-gray-500">Created At</label>
+                  <p className="text-gray-900">{formatDateTime(selectedKeyDetail.createdAt)}</p>
+                </div>
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-gray-500 mb-1">Decrypted Key</label>
+                <div className="flex items-center gap-2">
+                  <code className="flex-1 bg-gray-100 px-3 py-2 rounded-lg text-sm font-mono break-all">
+                    {selectedKeyDetail.decryptedKey}
+                  </code>
+                  <button
+                    onClick={handleCopyDecryptedKey}
+                    className="shrink-0 bg-blue-600 hover:bg-blue-700 text-white px-3 py-2 rounded-lg text-sm font-medium"
+                  >
+                    {detailCopied ? '복사됨!' : '복사'}
+                  </button>
+                </div>
+              </div>
+            </div>
+            <div className="px-6 py-4 border-t flex justify-end">
+              <button
+                onClick={() => {
+                  setIsDetailModalOpen(false);
+                  setSelectedKeyDetail(null);
+                }}
+                className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                닫기
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Permission Modal */}
+      {isPermissionModalOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-2xl mx-4 max-h-[90vh] flex flex-col">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">
+                권한 관리 - {permissionKeyName}
+              </h2>
+            </div>
+            <div className="px-6 py-4 overflow-y-auto flex-1">
+              {error && (
+                <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm mb-4">{error}</div>
+              )}
+              <p className="text-sm text-gray-500 mb-3">
+                {permissionApiIds.size}개 API 선택됨
+              </p>
+              <div className="border rounded-lg p-3">
+                {renderApiCheckboxes(permissionApiIds, handleTogglePermissionApi)}
+              </div>
+            </div>
+            <div className="px-6 py-4 border-t flex justify-end gap-2">
+              <button
+                type="button"
+                onClick={() => {
+                  setIsPermissionModalOpen(false);
+                  setPermissionKeyId(null);
+                  setError(null);
+                }}
+                className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                취소
+              </button>
+              <button
+                onClick={handleSavePermissions}
+                className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                저장
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Raw Key Modal (after approve) */}
+      {rawKeyModal && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-lg mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">API Key 생성 완료</h2>
+            </div>
+            <div className="px-6 py-4 space-y-4">
+              <div className="p-3 bg-yellow-50 border border-yellow-200 text-yellow-800 rounded-lg text-sm">
+                이 키는 다시 표시되지 않습니다. 안전한 곳에 보관하세요.
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">Key Name</label>
+                <p className="text-gray-900">{rawKeyModal.keyName}</p>
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">API Key</label>
+                <div className="flex items-center gap-2">
+                  <code className="flex-1 bg-gray-100 px-3 py-2 rounded-lg text-sm font-mono break-all">
+                    {rawKeyModal.rawKey}
+                  </code>
+                  <button
+                    onClick={handleCopyRawKey}
+                    className="shrink-0 bg-blue-600 hover:bg-blue-700 text-white px-3 py-2 rounded-lg text-sm font-medium"
+                  >
+                    {rawKeyCopied ? '복사됨!' : '복사'}
+                  </button>
+                </div>
+              </div>
+            </div>
+            <div className="px-6 py-4 border-t flex justify-end">
+              <button
+                onClick={() => {
+                  setRawKeyModal(null);
+                  setRawKeyCopied(false);
+                }}
+                className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                닫기
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default KeyAdminPage;
diff --git a/frontend/src/pages/apikeys/KeyRequestPage.tsx b/frontend/src/pages/apikeys/KeyRequestPage.tsx
new file mode 100644
index 0000000..b9fd372
--- /dev/null
+++ b/frontend/src/pages/apikeys/KeyRequestPage.tsx
@@ -0,0 +1,399 @@
+import { useState, useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
+import type { ServiceInfo, ServiceApi } from '../../types/service';
+import { getServices, getServiceApis } from '../../services/serviceService';
+import { createKeyRequest } from '../../services/apiKeyService';
+
+const METHOD_COLOR: Record<string, string> = {
+  GET: 'bg-green-100 text-green-800',
+  POST: 'bg-blue-100 text-blue-800',
+  PUT: 'bg-orange-100 text-orange-800',
+  DELETE: 'bg-red-100 text-red-800',
+};
+
+const KeyRequestPage = () => {
+  const navigate = useNavigate();
+
+  const [services, setServices] = useState<ServiceInfo[]>([]);
+  const [serviceApisMap, setServiceApisMap] = useState<Record<number, ServiceApi[]>>({});
+  const [expandedServices, setExpandedServices] = useState<Set<number>>(new Set());
+  const [selectedApiIds, setSelectedApiIds] = useState<Set<number>>(new Set());
+  const [keyName, setKeyName] = useState('');
+  const [purpose, setPurpose] = useState('');
+  const [serviceIp, setServiceIp] = useState('');
+  const [servicePurpose, setServicePurpose] = useState('');
+  const [dailyRequestEstimate, setDailyRequestEstimate] = useState('');
+  const [usagePeriodMode, setUsagePeriodMode] = useState<'preset' | 'custom'>('preset');
+  const [usageFromDate, setUsageFromDate] = useState('');
+  const [usageToDate, setUsageToDate] = useState('');
+  const [isLoading, setIsLoading] = useState(true);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [success, setSuccess] = useState(false);
+
+  useEffect(() => {
+    const fetchData = async () => {
+      try {
+        setIsLoading(true);
+        const servicesRes = await getServices();
+        if (servicesRes.success && servicesRes.data) {
+          const activeServices = servicesRes.data.filter((s) => s.isActive);
+          setServices(activeServices);
+
+          const apisMap: Record<number, ServiceApi[]> = {};
+          await Promise.all(
+            activeServices.map(async (service) => {
+              const apisRes = await getServiceApis(service.serviceId);
+              if (apisRes.success && apisRes.data) {
+                apisMap[service.serviceId] = apisRes.data.filter((a) => a.isActive);
+              }
+            }),
+          );
+          setServiceApisMap(apisMap);
+        } else {
+          setError(servicesRes.message || '서비스 목록을 불러오는데 실패했습니다.');
+        }
+      } catch {
+        setError('서비스 목록을 불러오는데 실패했습니다.');
+      } finally {
+        setIsLoading(false);
+      }
+    };
+
+    fetchData();
+  }, []);
+
+  const handleToggleService = (serviceId: number) => {
+    setExpandedServices((prev) => {
+      const next = new Set(prev);
+      if (next.has(serviceId)) {
+        next.delete(serviceId);
+      } else {
+        next.add(serviceId);
+      }
+      return next;
+    });
+  };
+
+  const handleToggleApi = (apiId: number) => {
+    setSelectedApiIds((prev) => {
+      const next = new Set(prev);
+      if (next.has(apiId)) {
+        next.delete(apiId);
+      } else {
+        next.add(apiId);
+      }
+      return next;
+    });
+  };
+
+  const handleToggleAllServiceApis = (serviceId: number) => {
+    const apis = serviceApisMap[serviceId] || [];
+    const allSelected = apis.every((a) => selectedApiIds.has(a.apiId));
+
+    setSelectedApiIds((prev) => {
+      const next = new Set(prev);
+      apis.forEach((a) => {
+        if (allSelected) {
+          next.delete(a.apiId);
+        } else {
+          next.add(a.apiId);
+        }
+      });
+      return next;
+    });
+  };
+
+  const handlePresetPeriod = (months: number) => {
+    const from = new Date();
+    const to = new Date();
+    to.setMonth(to.getMonth() + months);
+    setUsageFromDate(from.toISOString().split('T')[0]);
+    setUsageToDate(to.toISOString().split('T')[0]);
+    setUsagePeriodMode('preset');
+  };
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    if (selectedApiIds.size === 0) {
+      setError('최소 하나의 API를 선택해주세요.');
+      return;
+    }
+    if (!usageFromDate || !usageToDate) {
+      setError('사용 기간을 설정해주세요.');
+      return;
+    }
+
+    setError(null);
+    setIsSubmitting(true);
+
+    try {
+      const res = await createKeyRequest({
+        keyName,
+        purpose: purpose || undefined,
+        requestedApiIds: Array.from(selectedApiIds),
+        serviceIp: serviceIp || undefined,
+        servicePurpose: servicePurpose || undefined,
+        dailyRequestEstimate: dailyRequestEstimate ? Number(dailyRequestEstimate) : undefined,
+        usageFromDate,
+        usageToDate,
+      });
+      if (res.success) {
+        setSuccess(true);
+      } else {
+        setError(res.message || 'API Key 신청에 실패했습니다.');
+      }
+    } catch {
+      setError('API Key 신청에 실패했습니다.');
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  if (isLoading) {
+    return <div className="text-center py-10 text-gray-500">로딩 중...</div>;
+  }
+
+  if (success) {
+    return (
+      <div className="max-w-lg mx-auto mt-10 text-center">
+        <div className="bg-green-50 border border-green-200 rounded-lg p-6">
+          <h2 className="text-lg font-semibold text-green-800 mb-2">신청이 완료되었습니다</h2>
+          <p className="text-green-700 text-sm mb-4">
+            관리자 승인 후 API Key가 생성됩니다.
+          </p>
+          <button
+            onClick={() => navigate('/apikeys/my-keys')}
+            className="bg-green-600 hover:bg-green-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+          >
+            내 키 목록으로 이동
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      <h1 className="text-2xl font-bold text-gray-900 mb-6">API Key 신청</h1>
+
+      {error && (
+        <div className="mb-4 p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      )}
+
+      <form onSubmit={handleSubmit}>
+        <div className="bg-white rounded-lg shadow p-6 mb-6 space-y-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              Key Name <span className="text-red-500">*</span>
+            </label>
+            <input
+              type="text"
+              value={keyName}
+              onChange={(e) => setKeyName(e.target.value)}
+              required
+              placeholder="API Key 이름을 입력하세요"
+              className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+            />
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">사용 목적</label>
+            <textarea
+              value={purpose}
+              onChange={(e) => setPurpose(e.target.value)}
+              rows={2}
+              placeholder="사용 목적을 입력하세요"
+              className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+            />
+          </div>
+
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              사용 기간 <span className="text-red-500">*</span>
+            </label>
+            <div className="flex items-center gap-2 mb-2">
+              <button type="button" onClick={() => handlePresetPeriod(3)}
+                disabled={usagePeriodMode === 'custom'}
+                className={`px-3 py-1.5 text-sm rounded-lg border ${usagePeriodMode === 'custom' ? 'opacity-40 cursor-not-allowed' : 'hover:bg-blue-50'}`}>
+                3개월
+              </button>
+              <button type="button" onClick={() => handlePresetPeriod(6)}
+                disabled={usagePeriodMode === 'custom'}
+                className={`px-3 py-1.5 text-sm rounded-lg border ${usagePeriodMode === 'custom' ? 'opacity-40 cursor-not-allowed' : 'hover:bg-blue-50'}`}>
+                6개월
+              </button>
+              <button type="button" onClick={() => handlePresetPeriod(9)}
+                disabled={usagePeriodMode === 'custom'}
+                className={`px-3 py-1.5 text-sm rounded-lg border ${usagePeriodMode === 'custom' ? 'opacity-40 cursor-not-allowed' : 'hover:bg-blue-50'}`}>
+                9개월
+              </button>
+              <span className="text-gray-400 mx-1">|</span>
+              <label className="flex items-center gap-2 text-sm text-gray-700 cursor-pointer select-none">
+                직접 선택
+                <button type="button"
+                  onClick={() => setUsagePeriodMode(usagePeriodMode === 'custom' ? 'preset' : 'custom')}
+                  className={`relative w-10 h-5 rounded-full transition-colors ${usagePeriodMode === 'custom' ? 'bg-blue-600' : 'bg-gray-300'}`}>
+                  <span className={`absolute top-0.5 left-0.5 w-4 h-4 bg-white rounded-full shadow transition-transform ${usagePeriodMode === 'custom' ? 'translate-x-5' : ''}`} />
+                </button>
+              </label>
+            </div>
+            <div className="flex items-center gap-2">
+              <input type="date" value={usageFromDate}
+                onChange={(e) => setUsageFromDate(e.target.value)}
+                readOnly={usagePeriodMode !== 'custom'}
+                className={`border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none ${usagePeriodMode !== 'custom' ? 'bg-gray-50 text-gray-500' : ''}`} />
+              <span className="text-gray-500">~</span>
+              <input type="date" value={usageToDate}
+                onChange={(e) => setUsageToDate(e.target.value)}
+                readOnly={usagePeriodMode !== 'custom'}
+                className={`border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none ${usagePeriodMode !== 'custom' ? 'bg-gray-50 text-gray-500' : ''}`} />
+            </div>
+          </div>
+
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">
+              서비스 IP <span className="text-red-500">*</span>
+            </label>
+            <input type="text" value={serviceIp}
+              onChange={(e) => setServiceIp(e.target.value)}
+              required placeholder="예: 192.168.1.100"
+              className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none" />
+            <p className="text-xs text-gray-400 mt-1">발급받은 API Key로 프록시 서버에 요청하는 서비스 IP</p>
+          </div>
+
+          <div className="grid grid-cols-2 gap-4">
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">
+                서비스 용도 <span className="text-red-500">*</span>
+              </label>
+              <select value={servicePurpose}
+                onChange={(e) => setServicePurpose(e.target.value)}
+                required
+                className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none">
+                <option value="">선택하세요</option>
+                <option value="로컬 환경">로컬 환경</option>
+                <option value="개발 서버">개발 서버</option>
+                <option value="검증 서버">검증 서버</option>
+                <option value="운영 서버">운영 서버</option>
+              </select>
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">
+                하루 예상 요청량 <span className="text-red-500">*</span>
+              </label>
+              <select value={dailyRequestEstimate}
+                onChange={(e) => setDailyRequestEstimate(e.target.value)}
+                required
+                className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none">
+                <option value="">선택하세요</option>
+                <option value="100">100 이하</option>
+                <option value="500">100~500</option>
+                <option value="1000">500~1,000</option>
+                <option value="5000">1,000~5,000</option>
+                <option value="10000">5,000~10,000</option>
+                <option value="50000">10,000 이상</option>
+              </select>
+            </div>
+          </div>
+        </div>
+
+        <div className="bg-white rounded-lg shadow mb-6">
+          <div className="px-6 py-4 border-b">
+            <h2 className="text-lg font-semibold text-gray-900">
+              API 선택 <span className="text-sm font-normal text-gray-500">({selectedApiIds.size}개 선택됨)</span>
+            </h2>
+          </div>
+          <div className="divide-y divide-gray-200">
+            {services.map((service) => {
+              const apis = serviceApisMap[service.serviceId] || [];
+              const isExpanded = expandedServices.has(service.serviceId);
+              const selectedCount = apis.filter((a) => selectedApiIds.has(a.apiId)).length;
+              const allSelected = apis.length > 0 && apis.every((a) => selectedApiIds.has(a.apiId));
+
+              return (
+                <div key={service.serviceId}>
+                  <div
+                    className="px-6 py-3 flex items-center justify-between cursor-pointer hover:bg-gray-50"
+                    onClick={() => handleToggleService(service.serviceId)}
+                  >
+                    <div className="flex items-center gap-3">
+                      <span className="text-gray-400 text-sm">{isExpanded ? '\u25BC' : '\u25B6'}</span>
+                      <span className="font-medium text-gray-900">{service.serviceName}</span>
+                      {selectedCount > 0 && (
+                        <span className="text-xs bg-blue-100 text-blue-800 px-2 py-0.5 rounded-full">
+                          {selectedCount}/{apis.length}
+                        </span>
+                      )}
+                    </div>
+                    <span className="text-sm text-gray-500">{apis.length}개 API</span>
+                  </div>
+                  {isExpanded && (
+                    <div className="px-6 pb-3">
+                      {apis.length > 0 && (
+                        <div className="mb-2 pl-6">
+                          <label className="flex items-center gap-2 text-sm text-gray-600 cursor-pointer">
+                            <input
+                              type="checkbox"
+                              checked={allSelected}
+                              onChange={() => handleToggleAllServiceApis(service.serviceId)}
+                              className="rounded"
+                            />
+                            전체 선택
+                          </label>
+                        </div>
+                      )}
+                      <div className="space-y-1 pl-6">
+                        {apis.map((api) => (
+                          <label
+                            key={api.apiId}
+                            className="flex items-center gap-2 py-1 cursor-pointer hover:bg-gray-50 rounded px-2"
+                          >
+                            <input
+                              type="checkbox"
+                              checked={selectedApiIds.has(api.apiId)}
+                              onChange={() => handleToggleApi(api.apiId)}
+                              className="rounded"
+                            />
+                            <span
+                              className={`inline-block px-2 py-0.5 rounded text-xs font-bold ${
+                                METHOD_COLOR[api.apiMethod] || 'bg-gray-100 text-gray-800'
+                              }`}
+                            >
+                              {api.apiMethod}
+                            </span>
+                            <span className="font-mono text-sm text-gray-700">{api.apiPath}</span>
+                            <span className="text-sm text-gray-500">- {api.apiName}</span>
+                          </label>
+                        ))}
+                        {apis.length === 0 && (
+                          <p className="text-sm text-gray-400 py-1">등록된 API가 없습니다.</p>
+                        )}
+                      </div>
+                    </div>
+                  )}
+                </div>
+              );
+            })}
+            {services.length === 0 && (
+              <div className="px-6 py-8 text-center text-gray-400">
+                등록된 서비스가 없습니다.
+              </div>
+            )}
+          </div>
+        </div>
+
+        <div className="flex justify-end">
+          <button
+            type="submit"
+            disabled={isSubmitting}
+            className="bg-blue-600 hover:bg-blue-700 disabled:bg-blue-300 text-white px-6 py-2 rounded-lg text-sm font-medium"
+          >
+            {isSubmitting ? '신청 중...' : '신청하기'}
+          </button>
+        </div>
+      </form>
+    </div>
+  );
+};
+
+export default KeyRequestPage;
diff --git a/frontend/src/pages/apikeys/MyKeysPage.tsx b/frontend/src/pages/apikeys/MyKeysPage.tsx
new file mode 100644
index 0000000..90966c9
--- /dev/null
+++ b/frontend/src/pages/apikeys/MyKeysPage.tsx
@@ -0,0 +1,273 @@
+import { useState, useEffect } from 'react';
+import { Link } from 'react-router-dom';
+import type { ApiKey } from '../../types/apikey';
+import { getMyKeys, createKey, revokeKey } from '../../services/apiKeyService';
+import { useAuth } from '../../hooks/useAuth';
+
+const STATUS_BADGE: Record<string, string> = {
+  ACTIVE: 'bg-green-100 text-green-800',
+  PENDING: 'bg-yellow-100 text-yellow-800',
+  REVOKED: 'bg-red-100 text-red-800',
+  EXPIRED: 'bg-gray-100 text-gray-800',
+  INACTIVE: 'bg-gray-100 text-gray-800',
+};
+
+const formatDateTime = (dateStr: string | null): string => {
+  if (!dateStr) return '-';
+  return new Date(dateStr).toLocaleString('ko-KR');
+};
+
+const MyKeysPage = () => {
+  const { user } = useAuth();
+  const isAdmin = user?.role === 'ADMIN';
+
+  const [keys, setKeys] = useState<ApiKey[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const [isCreateModalOpen, setIsCreateModalOpen] = useState(false);
+  const [keyName, setKeyName] = useState('');
+
+  const [rawKeyModal, setRawKeyModal] = useState<{ keyName: string; rawKey: string } | null>(null);
+  const [copied, setCopied] = useState(false);
+
+  const fetchKeys = async () => {
+    try {
+      setLoading(true);
+      const res = await getMyKeys();
+      if (res.success && res.data) {
+        setKeys(res.data);
+      } else {
+        setError(res.message || 'API Key 목록을 불러오는데 실패했습니다.');
+      }
+    } catch {
+      setError('API Key 목록을 불러오는데 실패했습니다.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    fetchKeys();
+  }, []);
+
+  const handleRevoke = async (key: ApiKey) => {
+    if (!window.confirm(`'${key.keyName}' 키를 폐기하시겠습니까? 이 작업은 되돌릴 수 없습니다.`)) return;
+
+    try {
+      const res = await revokeKey(key.apiKeyId);
+      if (res.success) {
+        await fetchKeys();
+      } else {
+        setError(res.message || '키 폐기에 실패했습니다.');
+      }
+    } catch {
+      setError('키 폐기에 실패했습니다.');
+    }
+  };
+
+  const handleCreateSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+
+    try {
+      const res = await createKey({ keyName });
+      if (res.success && res.data) {
+        setIsCreateModalOpen(false);
+        setKeyName('');
+        setRawKeyModal({ keyName: res.data.keyName, rawKey: res.data.rawKey });
+        await fetchKeys();
+      } else {
+        setError(res.message || 'API Key 생성에 실패했습니다.');
+      }
+    } catch {
+      setError('API Key 생성에 실패했습니다.');
+    }
+  };
+
+  const handleCopyRawKey = async () => {
+    if (!rawKeyModal) return;
+    await navigator.clipboard.writeText(rawKeyModal.rawKey);
+    setCopied(true);
+    setTimeout(() => setCopied(false), 2000);
+  };
+
+  if (loading) {
+    return <div className="text-center py-10 text-gray-500">로딩 중...</div>;
+  }
+
+  return (
+    <div>
+      <div className="flex items-center justify-between mb-6">
+        <h1 className="text-2xl font-bold text-gray-900">My API Keys</h1>
+        <div className="flex gap-2">
+          {!isAdmin && (
+            <Link
+              to="/apikeys/request"
+              className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+            >
+              API Key 신청
+            </Link>
+          )}
+          {isAdmin && (
+            <button
+              onClick={() => {
+                setKeyName('');
+                setError(null);
+                setIsCreateModalOpen(true);
+              }}
+              className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+            >
+              API Key 생성
+            </button>
+          )}
+        </div>
+      </div>
+
+      {error && !isCreateModalOpen && (
+        <div className="mb-4 p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      )}
+
+      <div className="overflow-x-auto bg-white rounded-lg shadow">
+        <table className="w-full divide-y divide-gray-200 text-sm">
+          <thead className="bg-gray-50">
+            <tr>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Key Name</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Prefix</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Status</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Expires At</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Last Used At</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Created At</th>
+              <th className="px-4 py-3 text-left font-medium text-gray-500">Actions</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-200">
+            {keys.map((key) => (
+              <tr key={key.apiKeyId} className="hover:bg-gray-50">
+                <td className="px-4 py-3">{key.keyName}</td>
+                <td className="px-4 py-3 font-mono text-gray-600">{key.apiKeyPrefix}</td>
+                <td className="px-4 py-3">
+                  <span
+                    className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                      STATUS_BADGE[key.status] || 'bg-gray-100 text-gray-800'
+                    }`}
+                  >
+                    {key.status}
+                  </span>
+                </td>
+                <td className="px-4 py-3 text-gray-500">{formatDateTime(key.expiresAt)}</td>
+                <td className="px-4 py-3 text-gray-500">{formatDateTime(key.lastUsedAt)}</td>
+                <td className="px-4 py-3 text-gray-500">{formatDateTime(key.createdAt)}</td>
+                <td className="px-4 py-3">
+                  {key.status === 'ACTIVE' && (
+                    <button
+                      onClick={() => handleRevoke(key)}
+                      className="text-red-600 hover:text-red-800 font-medium text-sm"
+                    >
+                      폐기
+                    </button>
+                  )}
+                </td>
+              </tr>
+            ))}
+            {keys.length === 0 && (
+              <tr>
+                <td colSpan={7} className="px-4 py-8 text-center text-gray-400">
+                  등록된 API Key가 없습니다.
+                </td>
+              </tr>
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      {isCreateModalOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">API Key 생성</h2>
+            </div>
+            <form onSubmit={handleCreateSubmit}>
+              <div className="px-6 py-4 space-y-4">
+                {error && (
+                  <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+                )}
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">Key Name</label>
+                  <input
+                    type="text"
+                    value={keyName}
+                    onChange={(e) => setKeyName(e.target.value)}
+                    required
+                    className="w-full border rounded-lg px-3 py-2 focus:ring-2 focus:ring-blue-500 focus:outline-none"
+                  />
+                </div>
+              </div>
+              <div className="px-6 py-4 border-t flex justify-end gap-2">
+                <button
+                  type="button"
+                  onClick={() => setIsCreateModalOpen(false)}
+                  className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  취소
+                </button>
+                <button
+                  type="submit"
+                  className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+                >
+                  생성
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+
+      {rawKeyModal && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-lg mx-4">
+            <div className="px-6 py-4 border-b">
+              <h2 className="text-lg font-semibold text-gray-900">API Key 생성 완료</h2>
+            </div>
+            <div className="px-6 py-4 space-y-4">
+              <div className="p-3 bg-yellow-50 border border-yellow-200 text-yellow-800 rounded-lg text-sm">
+                이 키는 다시 표시되지 않습니다. 안전한 곳에 보관하세요.
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">Key Name</label>
+                <p className="text-gray-900">{rawKeyModal.keyName}</p>
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">API Key</label>
+                <div className="flex items-center gap-2">
+                  <code className="flex-1 bg-gray-100 px-3 py-2 rounded-lg text-sm font-mono break-all">
+                    {rawKeyModal.rawKey}
+                  </code>
+                  <button
+                    onClick={handleCopyRawKey}
+                    className="shrink-0 bg-blue-600 hover:bg-blue-700 text-white px-3 py-2 rounded-lg text-sm font-medium"
+                  >
+                    {copied ? '복사됨!' : '복사'}
+                  </button>
+                </div>
+              </div>
+            </div>
+            <div className="px-6 py-4 border-t flex justify-end">
+              <button
+                onClick={() => {
+                  setRawKeyModal(null);
+                  setCopied(false);
+                }}
+                className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+              >
+                닫기
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default MyKeysPage;
diff --git a/frontend/src/pages/monitoring/RequestLogDetailPage.tsx b/frontend/src/pages/monitoring/RequestLogDetailPage.tsx
new file mode 100644
index 0000000..c808455
--- /dev/null
+++ b/frontend/src/pages/monitoring/RequestLogDetailPage.tsx
@@ -0,0 +1,210 @@
+import { useState, useEffect } from 'react';
+import { useParams, useNavigate } from 'react-router-dom';
+import type { RequestLog } from '../../types/monitoring';
+import { getLogDetail } from '../../services/monitoringService';
+
+const METHOD_COLOR: Record<string, string> = {
+  GET: 'bg-green-100 text-green-800',
+  POST: 'bg-blue-100 text-blue-800',
+  PUT: 'bg-orange-100 text-orange-800',
+  DELETE: 'bg-red-100 text-red-800',
+};
+
+const STATUS_BADGE: Record<string, string> = {
+  SUCCESS: 'bg-green-100 text-green-800',
+  DENIED: 'bg-red-100 text-red-800',
+  EXPIRED: 'bg-orange-100 text-orange-800',
+  INVALID_KEY: 'bg-red-100 text-red-800',
+  FAILED: 'bg-gray-100 text-gray-800',
+};
+
+const formatDateTime = (dateStr: string): string => {
+  const d = new Date(dateStr);
+  const year = d.getFullYear();
+  const month = String(d.getMonth() + 1).padStart(2, '0');
+  const day = String(d.getDate()).padStart(2, '0');
+  const hours = String(d.getHours()).padStart(2, '0');
+  const minutes = String(d.getMinutes()).padStart(2, '0');
+  const seconds = String(d.getSeconds()).padStart(2, '0');
+  return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
+};
+
+const formatJson = (str: string | null): string | null => {
+  if (!str) return null;
+  try {
+    return JSON.stringify(JSON.parse(str), null, 2);
+  } catch {
+    return str;
+  }
+};
+
+const RequestLogDetailPage = () => {
+  const { id } = useParams<{ id: string }>();
+  const navigate = useNavigate();
+
+  const [log, setLog] = useState<RequestLog | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    if (!id) return;
+
+    const fetchDetail = async () => {
+      setLoading(true);
+      setError(null);
+      try {
+        const res = await getLogDetail(Number(id));
+        if (res.success && res.data) {
+          setLog(res.data);
+        } else {
+          setError(res.message || '로그 상세 조회에 실패했습니다.');
+        }
+      } catch {
+        setError('로그 상세 조회에 실패했습니다.');
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    fetchDetail();
+  }, [id]);
+
+  if (loading) {
+    return <div className="text-center py-10 text-gray-500">로딩 중...</div>;
+  }
+
+  if (error) {
+    return (
+      <div>
+        <button
+          onClick={() => navigate(-1)}
+          className="text-blue-600 hover:text-blue-800 font-medium mb-4"
+        >
+          &larr; 목록으로
+        </button>
+        <div className="p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      </div>
+    );
+  }
+
+  if (!log) return null;
+
+  const formattedHeaders = formatJson(log.requestHeaders);
+  const formattedParams = formatJson(log.requestParams);
+
+  return (
+    <div>
+      <button
+        onClick={() => navigate(-1)}
+        className="text-blue-600 hover:text-blue-800 font-medium mb-6"
+      >
+        &larr; 목록으로
+      </button>
+
+      {/* 기본 정보 */}
+      <div className="bg-white rounded-lg shadow p-6 mb-6">
+        <h2 className="text-lg font-semibold text-gray-900 mb-4">기본 정보</h2>
+        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4 mb-4">
+          <div>
+            <span className="block text-sm font-medium text-gray-500">요청 시간</span>
+            <span className="text-sm text-gray-900">{formatDateTime(log.requestedAt)}</span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">요청</span>
+            <span className="text-sm text-gray-900">
+              <span
+                className={`inline-block px-2 py-0.5 rounded text-xs font-bold mr-2 ${
+                  METHOD_COLOR[log.requestMethod] || 'bg-gray-100 text-gray-800'
+                }`}
+              >
+                {log.requestMethod}
+              </span>
+              {log.requestUrl}
+            </span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">응답 코드</span>
+            <span className="text-sm text-gray-900">
+              {log.responseStatus != null ? log.responseStatus : '-'}
+            </span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">응답시간(ms)</span>
+            <span className="text-sm text-gray-900">
+              {log.responseTime != null ? log.responseTime : '-'}
+            </span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">응답크기(bytes)</span>
+            <span className="text-sm text-gray-900">
+              {log.responseSize != null ? log.responseSize : '-'}
+            </span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">상태</span>
+            <span
+              className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                STATUS_BADGE[log.requestStatus] || 'bg-gray-100 text-gray-800'
+              }`}
+            >
+              {log.requestStatus}
+            </span>
+          </div>
+        </div>
+        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
+          <div>
+            <span className="block text-sm font-medium text-gray-500">서비스</span>
+            <span className="text-sm text-gray-900">{log.serviceName || '-'}</span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">API Key</span>
+            <span className="text-sm text-gray-900 font-mono">
+              {log.apiKeyPrefix || '-'}
+            </span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">사용자</span>
+            <span className="text-sm text-gray-900">{log.userName || '-'}</span>
+          </div>
+          <div>
+            <span className="block text-sm font-medium text-gray-500">IP</span>
+            <span className="text-sm text-gray-900 font-mono">{log.requestIp}</span>
+          </div>
+        </div>
+      </div>
+
+      {/* 요청 정보 */}
+      {(formattedHeaders || formattedParams) && (
+        <div className="bg-white rounded-lg shadow p-6 mb-6">
+          <h2 className="text-lg font-semibold text-gray-900 mb-4">요청 정보</h2>
+          {formattedHeaders && (
+            <div className="mb-4">
+              <span className="block text-sm font-medium text-gray-500 mb-1">Request Headers</span>
+              <pre className="bg-gray-50 rounded-lg p-4 text-sm text-gray-800 overflow-x-auto">
+                {formattedHeaders}
+              </pre>
+            </div>
+          )}
+          {formattedParams && (
+            <div>
+              <span className="block text-sm font-medium text-gray-500 mb-1">Request Params</span>
+              <pre className="bg-gray-50 rounded-lg p-4 text-sm text-gray-800 overflow-x-auto">
+                {formattedParams}
+              </pre>
+            </div>
+          )}
+        </div>
+      )}
+
+      {/* 에러 정보 */}
+      {log.errorMessage && (
+        <div className="bg-red-50 rounded-lg shadow p-6">
+          <h2 className="text-lg font-semibold text-red-900 mb-2">에러 정보</h2>
+          <p className="text-sm text-red-800">{log.errorMessage}</p>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default RequestLogDetailPage;
diff --git a/frontend/src/pages/monitoring/RequestLogsPage.tsx b/frontend/src/pages/monitoring/RequestLogsPage.tsx
new file mode 100644
index 0000000..7d8d53a
--- /dev/null
+++ b/frontend/src/pages/monitoring/RequestLogsPage.tsx
@@ -0,0 +1,364 @@
+import { useState, useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
+import type { RequestLog, PageResponse } from '../../types/monitoring';
+import type { ServiceInfo } from '../../types/service';
+import { searchLogs } from '../../services/monitoringService';
+import { getServices } from '../../services/serviceService';
+
+const METHOD_COLOR: Record<string, string> = {
+  GET: 'bg-green-100 text-green-800',
+  POST: 'bg-blue-100 text-blue-800',
+  PUT: 'bg-orange-100 text-orange-800',
+  DELETE: 'bg-red-100 text-red-800',
+};
+
+const STATUS_BADGE: Record<string, string> = {
+  SUCCESS: 'bg-green-100 text-green-800',
+  FAIL: 'bg-red-100 text-red-800',
+  DENIED: 'bg-red-100 text-red-800',
+  EXPIRED: 'bg-orange-100 text-orange-800',
+  INVALID_KEY: 'bg-red-100 text-red-800',
+  ERROR: 'bg-orange-100 text-orange-800',
+  FAILED: 'bg-gray-100 text-gray-800',
+};
+
+const REQUEST_STATUSES = ['SUCCESS', 'FAIL', 'DENIED', 'EXPIRED', 'INVALID_KEY', 'ERROR', 'FAILED'];
+const HTTP_METHODS = ['GET', 'POST', 'PUT', 'DELETE'];
+const DEFAULT_PAGE_SIZE = 20;
+
+const getTodayString = (): string => {
+  const d = new Date();
+  const year = d.getFullYear();
+  const month = String(d.getMonth() + 1).padStart(2, '0');
+  const day = String(d.getDate()).padStart(2, '0');
+  return `${year}-${month}-${day}`;
+};
+
+const formatDateTime = (dateStr: string): string => {
+  const d = new Date(dateStr);
+  const year = d.getFullYear();
+  const month = String(d.getMonth() + 1).padStart(2, '0');
+  const day = String(d.getDate()).padStart(2, '0');
+  const hours = String(d.getHours()).padStart(2, '0');
+  const minutes = String(d.getMinutes()).padStart(2, '0');
+  const seconds = String(d.getSeconds()).padStart(2, '0');
+  return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
+};
+
+const RequestLogsPage = () => {
+  const navigate = useNavigate();
+
+  const [startDate, setStartDate] = useState(getTodayString());
+  const [endDate, setEndDate] = useState(getTodayString());
+  const [serviceId, setServiceId] = useState('');
+  const [requestStatus, setRequestStatus] = useState('');
+  const [requestMethod, setRequestMethod] = useState('');
+  const [requestIp, setRequestIp] = useState('');
+
+  const [services, setServices] = useState<ServiceInfo[]>([]);
+  const [result, setResult] = useState<PageResponse<RequestLog> | null>(null);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [currentPage, setCurrentPage] = useState(0);
+
+  const fetchServices = async () => {
+    try {
+      const res = await getServices();
+      if (res.success && res.data) {
+        setServices(res.data);
+      }
+    } catch {
+      // 서비스 목록 로딩 실패는 무시
+    }
+  };
+
+  const handleSearch = async (page: number) => {
+    setLoading(true);
+    setError(null);
+    setCurrentPage(page);
+
+    try {
+      const params: Record<string, string | number | undefined> = {
+        startDate: startDate || undefined,
+        endDate: endDate || undefined,
+        serviceId: serviceId ? Number(serviceId) : undefined,
+        requestStatus: requestStatus || undefined,
+        requestMethod: requestMethod || undefined,
+        requestIp: requestIp || undefined,
+        page,
+        size: DEFAULT_PAGE_SIZE,
+      };
+      const res = await searchLogs(params);
+      if (res.success && res.data) {
+        setResult(res.data);
+      } else {
+        setError(res.message || '로그 조회에 실패했습니다.');
+      }
+    } catch {
+      setError('로그 조회에 실패했습니다.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handleReset = () => {
+    setStartDate(getTodayString());
+    setEndDate(getTodayString());
+    setServiceId('');
+    setRequestStatus('');
+    setRequestMethod('');
+    setRequestIp('');
+    setCurrentPage(0);
+  };
+
+  useEffect(() => {
+    fetchServices();
+    handleSearch(0);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const handleResetAndSearch = () => {
+    handleReset();
+    // 초기화 후 기본값으로 검색 (setState는 비동기이므로 직접 호출)
+    setLoading(true);
+    setError(null);
+    setCurrentPage(0);
+    const today = getTodayString();
+    const params: Record<string, string | number | undefined> = {
+      startDate: today,
+      endDate: today,
+      page: 0,
+      size: DEFAULT_PAGE_SIZE,
+    };
+    searchLogs(params)
+      .then((res) => {
+        if (res.success && res.data) {
+          setResult(res.data);
+        } else {
+          setError(res.message || '로그 조회에 실패했습니다.');
+        }
+      })
+      .catch(() => {
+        setError('로그 조회에 실패했습니다.');
+      })
+      .finally(() => {
+        setLoading(false);
+      });
+  };
+
+  const handleRowClick = (logId: number) => {
+    navigate(`/monitoring/request-logs/${logId}`);
+  };
+
+  const handlePrev = () => {
+    if (currentPage > 0) {
+      handleSearch(currentPage - 1);
+    }
+  };
+
+  const handleNext = () => {
+    if (result && currentPage < result.totalPages - 1) {
+      handleSearch(currentPage + 1);
+    }
+  };
+
+  return (
+    <div>
+      <h1 className="text-2xl font-bold text-gray-900 mb-6">Request Logs</h1>
+
+      {/* Search Form */}
+      <div className="bg-white rounded-lg shadow p-6 mb-6">
+        <div className="grid grid-cols-1 md:grid-cols-3 gap-4 mb-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">기간</label>
+            <div className="flex items-center gap-2">
+              <input
+                type="date"
+                value={startDate}
+                onChange={(e) => setStartDate(e.target.value)}
+                className="flex-1 border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none"
+              />
+              <span className="text-gray-500">~</span>
+              <input
+                type="date"
+                value={endDate}
+                onChange={(e) => setEndDate(e.target.value)}
+                className="flex-1 border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none"
+              />
+            </div>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">서비스</label>
+            <select
+              value={serviceId}
+              onChange={(e) => setServiceId(e.target.value)}
+              className="w-full border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none"
+            >
+              <option value="">전체</option>
+              {services.map((s) => (
+                <option key={s.serviceId} value={s.serviceId}>
+                  {s.serviceName}
+                </option>
+              ))}
+            </select>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">상태</label>
+            <select
+              value={requestStatus}
+              onChange={(e) => setRequestStatus(e.target.value)}
+              className="w-full border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none"
+            >
+              <option value="">전체</option>
+              {REQUEST_STATUSES.map((s) => (
+                <option key={s} value={s}>{s}</option>
+              ))}
+            </select>
+          </div>
+        </div>
+        <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">HTTP Method</label>
+            <select
+              value={requestMethod}
+              onChange={(e) => setRequestMethod(e.target.value)}
+              className="w-full border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none"
+            >
+              <option value="">전체</option>
+              {HTTP_METHODS.map((m) => (
+                <option key={m} value={m}>{m}</option>
+              ))}
+            </select>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">IP</label>
+            <input
+              type="text"
+              value={requestIp}
+              onChange={(e) => setRequestIp(e.target.value)}
+              placeholder="IP 주소"
+              className="w-full border rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-blue-500 focus:outline-none"
+            />
+          </div>
+          <div className="flex items-end gap-2">
+            <button
+              onClick={() => handleSearch(0)}
+              className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg text-sm font-medium"
+            >
+              검색
+            </button>
+            <button
+              onClick={handleResetAndSearch}
+              className="bg-gray-200 hover:bg-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium"
+            >
+              초기화
+            </button>
+          </div>
+        </div>
+      </div>
+
+      {error && (
+        <div className="mb-4 p-3 bg-red-50 text-red-700 rounded-lg text-sm">{error}</div>
+      )}
+
+      {/* Results Table */}
+      <div className="overflow-x-auto bg-white rounded-lg shadow mb-6">
+        {loading ? (
+          <div className="text-center py-10 text-gray-500">로딩 중...</div>
+        ) : (
+          <table className="w-full divide-y divide-gray-200 text-sm">
+            <thead className="bg-gray-50">
+              <tr>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">시간</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">서비스</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">Method</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">URL</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">Status Code</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">응답시간(ms)</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">상태</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">IP</th>
+              </tr>
+            </thead>
+            <tbody className="divide-y divide-gray-200">
+              {result && result.content.length > 0 ? (
+                result.content.map((log) => (
+                  <tr
+                    key={log.logId}
+                    onClick={() => handleRowClick(log.logId)}
+                    className="cursor-pointer hover:bg-gray-50"
+                  >
+                    <td className="px-4 py-3 whitespace-nowrap">
+                      {formatDateTime(log.requestedAt)}
+                    </td>
+                    <td className="px-4 py-3">{log.serviceName || '-'}</td>
+                    <td className="px-4 py-3">
+                      <span
+                        className={`inline-block px-2 py-0.5 rounded text-xs font-bold ${
+                          METHOD_COLOR[log.requestMethod] || 'bg-gray-100 text-gray-800'
+                        }`}
+                      >
+                        {log.requestMethod}
+                      </span>
+                    </td>
+                    <td className="px-4 py-3 text-gray-500 truncate max-w-[250px]" title={log.requestUrl}>
+                      {log.requestUrl}
+                    </td>
+                    <td className="px-4 py-3">
+                      {log.responseStatus != null ? log.responseStatus : '-'}
+                    </td>
+                    <td className="px-4 py-3">
+                      {log.responseTime != null ? log.responseTime : '-'}
+                    </td>
+                    <td className="px-4 py-3">
+                      <span
+                        className={`inline-block px-2 py-0.5 rounded-full text-xs font-medium ${
+                          STATUS_BADGE[log.requestStatus] || 'bg-gray-100 text-gray-800'
+                        }`}
+                      >
+                        {log.requestStatus}
+                      </span>
+                    </td>
+                    <td className="px-4 py-3 font-mono text-xs">{log.requestIp}</td>
+                  </tr>
+                ))
+              ) : (
+                <tr>
+                  <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
+                    검색 결과가 없습니다
+                  </td>
+                </tr>
+              )}
+            </tbody>
+          </table>
+        )}
+      </div>
+
+      {/* Pagination */}
+      {result && result.totalElements > 0 && (
+        <div className="flex items-center justify-between">
+          <span className="text-sm text-gray-600">
+            총 {result.totalElements}건 / {result.page + 1} / {result.totalPages} 페이지
+          </span>
+          <div className="flex gap-2">
+            <button
+              onClick={handlePrev}
+              disabled={currentPage === 0}
+              className="bg-white border border-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium disabled:opacity-50 disabled:cursor-not-allowed hover:bg-gray-50"
+            >
+              이전
+            </button>
+            <button
+              onClick={handleNext}
+              disabled={!result || currentPage >= result.totalPages - 1}
+              className="bg-white border border-gray-300 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium disabled:opacity-50 disabled:cursor-not-allowed hover:bg-gray-50"
+            >
+              다음
+            </button>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default RequestLogsPage;
diff --git a/frontend/src/pages/monitoring/ServiceStatusDetailPage.tsx b/frontend/src/pages/monitoring/ServiceStatusDetailPage.tsx
new file mode 100644
index 0000000..91502ec
--- /dev/null
+++ b/frontend/src/pages/monitoring/ServiceStatusDetailPage.tsx
@@ -0,0 +1,179 @@
+import { useState, useEffect, useCallback } from 'react';
+import { useParams, useNavigate } from 'react-router-dom';
+import type { ServiceStatusDetail } from '../../types/service';
+import { getServiceStatusDetail } from '../../services/heartbeatService';
+
+const STATUS_COLOR: Record<string, string> = {
+  UP: 'bg-green-500',
+  DOWN: 'bg-red-500',
+  UNKNOWN: 'bg-gray-400',
+};
+
+const getUptimeBarColor = (pct: number): string => {
+  if (pct >= 99.9) return 'bg-green-500';
+  if (pct >= 99) return 'bg-green-400';
+  if (pct >= 95) return 'bg-yellow-400';
+  if (pct >= 90) return 'bg-orange-400';
+  return 'bg-red-500';
+};
+
+const formatDate = (dateStr: string): string => {
+  const d = new Date(dateStr);
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;
+};
+
+const formatTime = (dateStr: string): string => {
+  return new Date(dateStr).toLocaleTimeString('ko-KR');
+};
+
+const ServiceStatusDetailPage = () => {
+  const { serviceId } = useParams<{ serviceId: string }>();
+  const navigate = useNavigate();
+  const [detail, setDetail] = useState<ServiceStatusDetail | null>(null);
+  const [isLoading, setIsLoading] = useState(true);
+
+  const fetchData = useCallback(async () => {
+    if (!serviceId) return;
+    try {
+      const res = await getServiceStatusDetail(Number(serviceId));
+      if (res.success && res.data) {
+        setDetail(res.data);
+      }
+    } catch {
+      // silent
+    } finally {
+      setIsLoading(false);
+    }
+  }, [serviceId]);
+
+  useEffect(() => {
+    fetchData();
+    const interval = setInterval(fetchData, 60000);
+    return () => clearInterval(interval);
+  }, [fetchData]);
+
+  if (isLoading) {
+    return <div className="text-center py-20 text-gray-500">로딩 중...</div>;
+  }
+
+  if (!detail) {
+    return <div className="text-center py-20 text-gray-500">서비스를 찾을 수 없습니다</div>;
+  }
+
+  return (
+    <div className="max-w-4xl mx-auto">
+      <button
+        onClick={() => navigate('/monitoring/service-status')}
+        className="text-sm text-blue-600 hover:text-blue-800 mb-4 inline-block"
+      >
+        ← Status 목록으로
+      </button>
+
+      {/* Header */}
+      <div className="bg-white rounded-lg shadow p-6 mb-6">
+        <div className="flex items-center justify-between">
+          <div className="flex items-center gap-3">
+            <div className={`w-4 h-4 rounded-full ${STATUS_COLOR[detail.currentStatus] || 'bg-gray-400'}`} />
+            <h1 className="text-2xl font-bold text-gray-900">{detail.serviceName}</h1>
+            <span className="text-gray-500">{detail.serviceCode}</span>
+          </div>
+          <div className="text-right">
+            <div className={`text-lg font-semibold ${detail.currentStatus === 'UP' ? 'text-green-600' : 'text-red-600'}`}>
+              {detail.currentStatus === 'UP' ? 'Operational' : detail.currentStatus === 'DOWN' ? 'Down' : 'Unknown'}
+            </div>
+            {detail.lastResponseTime !== null && (
+              <div className="text-sm text-gray-500">{detail.lastResponseTime}ms</div>
+            )}
+          </div>
+        </div>
+      </div>
+
+      {/* Uptime Summary */}
+      <div className="bg-white rounded-lg shadow p-6 mb-6">
+        <h2 className="text-lg font-semibold text-gray-900 mb-4">90일 Uptime</h2>
+        <div className="text-4xl font-bold text-gray-900 mb-4">{detail.uptimePercent90d.toFixed(3)}%</div>
+
+        {/* 90-Day Bar */}
+        <div className="flex items-center gap-0.5 mb-2">
+          {detail.dailyUptime.map((day, idx) => (
+            <div key={idx} className="group relative flex-1">
+              <div
+                className={`h-10 rounded-sm ${getUptimeBarColor(day.uptimePercent)} hover:opacity-80 transition-opacity`}
+              />
+              <div className="absolute bottom-full left-1/2 -translate-x-1/2 mb-2 hidden group-hover:block z-10">
+                <div className="bg-gray-900 text-white text-xs rounded px-3 py-2 whitespace-nowrap shadow-lg">
+                  <div className="font-medium">{formatDate(day.date)}</div>
+                  <div>Uptime: {day.uptimePercent.toFixed(1)}%</div>
+                  <div>Checks: {day.upChecks}/{day.totalChecks}</div>
+                </div>
+              </div>
+            </div>
+          ))}
+          {detail.dailyUptime.length === 0 && (
+            <div className="flex-1 h-10 bg-gray-100 rounded-sm" />
+          )}
+        </div>
+        <div className="flex justify-between text-xs text-gray-400">
+          <span>{detail.dailyUptime.length > 0 ? formatDate(detail.dailyUptime[0].date) : ''}</span>
+          <span>Today</span>
+        </div>
+
+        {/* Daily Uptime Legend */}
+        <div className="flex items-center gap-4 mt-4 text-xs text-gray-500">
+          <div className="flex items-center gap-1"><div className="w-3 h-3 rounded-sm bg-green-500" /> 99.9%+</div>
+          <div className="flex items-center gap-1"><div className="w-3 h-3 rounded-sm bg-green-400" /> 99%+</div>
+          <div className="flex items-center gap-1"><div className="w-3 h-3 rounded-sm bg-yellow-400" /> 95%+</div>
+          <div className="flex items-center gap-1"><div className="w-3 h-3 rounded-sm bg-orange-400" /> 90%+</div>
+          <div className="flex items-center gap-1"><div className="w-3 h-3 rounded-sm bg-red-500" /> &lt;90%</div>
+        </div>
+      </div>
+
+      {/* Recent Checks */}
+      <div className="bg-white rounded-lg shadow mb-6">
+        <div className="p-6 border-b">
+          <h2 className="text-lg font-semibold text-gray-900">최근 체크 이력</h2>
+        </div>
+        <div className="overflow-x-auto">
+          <table className="w-full text-sm">
+            <thead className="bg-gray-50">
+              <tr>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">시간</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">상태</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">응답시간</th>
+                <th className="px-4 py-3 text-left font-medium text-gray-500">에러</th>
+              </tr>
+            </thead>
+            <tbody className="divide-y divide-gray-200">
+              {detail.recentChecks.map((check, idx) => (
+                <tr key={idx} className="hover:bg-gray-50">
+                  <td className="px-4 py-3 text-gray-600 whitespace-nowrap">{formatTime(check.checkedAt)}</td>
+                  <td className="px-4 py-3">
+                    <div className="flex items-center gap-2">
+                      <div className={`w-2.5 h-2.5 rounded-full ${STATUS_COLOR[check.status] || 'bg-gray-400'}`} />
+                      <span className={check.status === 'UP' ? 'text-green-700' : 'text-red-700'}>{check.status}</span>
+                    </div>
+                  </td>
+                  <td className="px-4 py-3 text-gray-600">
+                    {check.responseTime !== null ? `${check.responseTime}ms` : '-'}
+                  </td>
+                  <td className="px-4 py-3 text-red-600 text-xs max-w-xs truncate">
+                    {check.errorMessage || '-'}
+                  </td>
+                </tr>
+              ))}
+              {detail.recentChecks.length === 0 && (
+                <tr>
+                  <td colSpan={4} className="px-4 py-8 text-center text-gray-400">
+                    체크 이력이 없습니다
+                  </td>
+                </tr>
+              )}
+            </tbody>
+          </table>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default ServiceStatusDetailPage;
diff --git a/frontend/src/pages/monitoring/ServiceStatusPage.tsx b/frontend/src/pages/monitoring/ServiceStatusPage.tsx
new file mode 100644
index 0000000..bf7b9c1
--- /dev/null
+++ b/frontend/src/pages/monitoring/ServiceStatusPage.tsx
@@ -0,0 +1,151 @@
+import { useState, useEffect, useCallback } from 'react';
+import { useNavigate } from 'react-router-dom';
+import type { ServiceStatusDetail } from '../../types/service';
+import { getAllStatusDetail } from '../../services/heartbeatService';
+
+const STATUS_COLOR: Record<string, string> = {
+  UP: 'bg-green-500',
+  DOWN: 'bg-red-500',
+  UNKNOWN: 'bg-gray-400',
+};
+
+const STATUS_TEXT: Record<string, string> = {
+  UP: 'Operational',
+  DOWN: 'Down',
+  UNKNOWN: 'Unknown',
+};
+
+const getUptimeBarColor = (pct: number): string => {
+  if (pct >= 99.9) return 'bg-green-500';
+  if (pct >= 99) return 'bg-green-400';
+  if (pct >= 95) return 'bg-yellow-400';
+  if (pct >= 90) return 'bg-orange-400';
+  return 'bg-red-500';
+};
+
+const formatDate = (dateStr: string): string => {
+  const d = new Date(dateStr);
+  return `${d.getMonth() + 1}/${d.getDate()}`;
+};
+
+const ServiceStatusPage = () => {
+  const navigate = useNavigate();
+  const [services, setServices] = useState<ServiceStatusDetail[]>([]);
+  const [isLoading, setIsLoading] = useState(true);
+  const [lastUpdated, setLastUpdated] = useState('');
+
+  const fetchData = useCallback(async () => {
+    try {
+      const res = await getAllStatusDetail();
+      if (res.success && res.data) {
+        setServices(res.data);
+      }
+      setLastUpdated(new Date().toLocaleTimeString('ko-KR'));
+    } catch {
+      // silent
+    } finally {
+      setIsLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    fetchData();
+    const interval = setInterval(fetchData, 60000);
+    return () => clearInterval(interval);
+  }, [fetchData]);
+
+  const allOperational = services.length > 0 && services.every((s) => s.currentStatus === 'UP');
+
+  if (isLoading) {
+    return <div className="text-center py-20 text-gray-500">로딩 중...</div>;
+  }
+
+  return (
+    <div className="max-w-4xl mx-auto">
+      <div className="flex items-center justify-between mb-8">
+        <h1 className="text-2xl font-bold text-gray-900">Service Status</h1>
+        <span className="text-sm text-gray-500">마지막 갱신: {lastUpdated}</span>
+      </div>
+
+      {/* Overall Status Banner */}
+      <div className={`rounded-lg p-6 mb-8 ${allOperational ? 'bg-green-50 border border-green-200' : 'bg-red-50 border border-red-200'}`}>
+        <div className="flex items-center gap-3">
+          <div className={`w-4 h-4 rounded-full ${allOperational ? 'bg-green-500' : 'bg-red-500'}`} />
+          <span className={`text-lg font-semibold ${allOperational ? 'text-green-800' : 'text-red-800'}`}>
+            {allOperational ? 'All Systems Operational' : 'Some Systems Down'}
+          </span>
+        </div>
+      </div>
+
+      {/* Service List */}
+      <div className="space-y-6">
+        {services.map((svc) => (
+          <div key={svc.serviceId} className="bg-white rounded-lg shadow">
+            {/* Service Header */}
+            <div className="p-6 border-b">
+              <div className="flex items-center justify-between">
+                <div className="flex items-center gap-3">
+                  <div className={`w-3 h-3 rounded-full ${STATUS_COLOR[svc.currentStatus] || 'bg-gray-400'}`} />
+                  <h2
+                    className="text-lg font-semibold text-gray-900 cursor-pointer hover:text-blue-600"
+                    onClick={() => navigate(`/monitoring/service-status/${svc.serviceId}`)}
+                  >
+                    {svc.serviceName}
+                  </h2>
+                  <span className="text-sm text-gray-500">{svc.serviceCode}</span>
+                </div>
+                <div className="flex items-center gap-4">
+                  <span className={`text-sm font-medium ${svc.currentStatus === 'UP' ? 'text-green-600' : svc.currentStatus === 'DOWN' ? 'text-red-600' : 'text-gray-500'}`}>
+                    {STATUS_TEXT[svc.currentStatus] || svc.currentStatus}
+                  </span>
+                  {svc.lastResponseTime !== null && (
+                    <span className="text-sm text-gray-400">{svc.lastResponseTime}ms</span>
+                  )}
+                </div>
+              </div>
+              <div className="mt-1 text-sm text-gray-500">
+                90일 Uptime: <span className="font-medium text-gray-900">{svc.uptimePercent90d.toFixed(2)}%</span>
+              </div>
+            </div>
+
+            {/* 90-Day Uptime Bar */}
+            <div className="px-6 py-4">
+              <div className="flex items-center gap-0.5">
+                {svc.dailyUptime.length > 0 ? (
+                  svc.dailyUptime.map((day, idx) => (
+                    <div
+                      key={idx}
+                      className="group relative flex-1"
+                    >
+                      <div
+                        className={`h-8 rounded-sm ${getUptimeBarColor(day.uptimePercent)} hover:opacity-80 transition-opacity`}
+                        title={`${formatDate(day.date)}: ${day.uptimePercent.toFixed(1)}% (${day.upChecks}/${day.totalChecks})`}
+                      />
+                      <div className="absolute bottom-full left-1/2 -translate-x-1/2 mb-2 hidden group-hover:block z-10">
+                        <div className="bg-gray-900 text-white text-xs rounded px-2 py-1 whitespace-nowrap">
+                          {formatDate(day.date)}: {day.uptimePercent.toFixed(1)}%
+                        </div>
+                      </div>
+                    </div>
+                  ))
+                ) : (
+                  <div className="flex-1 h-8 bg-gray-100 rounded-sm" />
+                )}
+              </div>
+              <div className="flex justify-between mt-1 text-xs text-gray-400">
+                <span>{svc.dailyUptime.length > 0 ? formatDate(svc.dailyUptime[0].date) : ''}</span>
+                <span>Today</span>
+              </div>
+            </div>
+          </div>
+        ))}
+
+        {services.length === 0 && (
+          <div className="text-center py-20 text-gray-400">등록된 서비스가 없습니다</div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default ServiceStatusPage;
diff --git a/frontend/src/services/apiClient.ts b/frontend/src/services/apiClient.ts
new file mode 100644
index 0000000..85a3462
--- /dev/null
+++ b/frontend/src/services/apiClient.ts
@@ -0,0 +1,116 @@
+import type { ApiResponse } from '../types/api';
+
+const BASE_URL = '/snp-connection/api';
+
+let isRefreshing = false;
+let refreshPromise: Promise<boolean> | null = null;
+
+const getAccessToken = (): string | null => {
+  return localStorage.getItem('snp_access_token');
+};
+
+const getRefreshToken = (): string | null => {
+  return localStorage.getItem('snp_refresh_token');
+};
+
+const clearStorage = () => {
+  localStorage.removeItem('snp_access_token');
+  localStorage.removeItem('snp_refresh_token');
+  localStorage.removeItem('snp_user');
+};
+
+const attemptRefresh = async (): Promise<boolean> => {
+  const refreshToken = getRefreshToken();
+  if (!refreshToken) return false;
+
+  try {
+    const response = await fetch(`${BASE_URL}/auth/refresh`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ refreshToken }),
+    });
+
+    if (!response.ok) return false;
+
+    const data = await response.json() as ApiResponse<{ accessToken: string }>;
+    if (data.success && data.data?.accessToken) {
+      localStorage.setItem('snp_access_token', data.data.accessToken);
+      return true;
+    }
+    return false;
+  } catch {
+    return false;
+  }
+};
+
+const handleTokenRefresh = async (): Promise<boolean> => {
+  if (isRefreshing && refreshPromise) {
+    return refreshPromise;
+  }
+
+  isRefreshing = true;
+  refreshPromise = attemptRefresh().finally(() => {
+    isRefreshing = false;
+    refreshPromise = null;
+  });
+
+  return refreshPromise;
+};
+
+const request = async <T>(url: string, options: RequestInit = {}): Promise<ApiResponse<T>> => {
+  const token = getAccessToken();
+  const headers: Record<string, string> = {
+    'Content-Type': 'application/json',
+    ...options.headers as Record<string, string>,
+  };
+
+  if (token) {
+    headers['Authorization'] = `Bearer ${token}`;
+  }
+
+  let response = await fetch(`${BASE_URL}${url}`, {
+    ...options,
+    headers,
+  });
+
+  if (response.status === 401) {
+    const refreshed = await handleTokenRefresh();
+    if (refreshed) {
+      const newToken = getAccessToken();
+      headers['Authorization'] = `Bearer ${newToken}`;
+      response = await fetch(`${BASE_URL}${url}`, {
+        ...options,
+        headers,
+      });
+    } else {
+      clearStorage();
+      window.location.href = '/snp-connection/login';
+      return { success: false, message: 'Authentication failed' };
+    }
+  }
+
+  const data = await response.json() as ApiResponse<T>;
+  return data;
+};
+
+export const get = <T>(url: string): Promise<ApiResponse<T>> => {
+  return request<T>(url, { method: 'GET' });
+};
+
+export const post = <T>(url: string, body?: unknown): Promise<ApiResponse<T>> => {
+  return request<T>(url, {
+    method: 'POST',
+    body: body ? JSON.stringify(body) : undefined,
+  });
+};
+
+export const put = <T>(url: string, body?: unknown): Promise<ApiResponse<T>> => {
+  return request<T>(url, {
+    method: 'PUT',
+    body: body ? JSON.stringify(body) : undefined,
+  });
+};
+
+export const del = <T>(url: string): Promise<ApiResponse<T>> => {
+  return request<T>(url, { method: 'DELETE' });
+};
diff --git a/frontend/src/services/apiKeyService.ts b/frontend/src/services/apiKeyService.ts
new file mode 100644
index 0000000..d3327bd
--- /dev/null
+++ b/frontend/src/services/apiKeyService.ts
@@ -0,0 +1,32 @@
+import { get, post, put } from './apiClient';
+import type {
+  ApiKey,
+  ApiKeyDetail,
+  ApiKeyCreateResponse,
+  CreateApiKeyRequest,
+  ApiKeyRequest,
+  ApiKeyRequestCreateDto,
+  ApiKeyRequestReviewDto,
+  Permission,
+  UpdatePermissionsRequest,
+} from '../types/apikey';
+
+// My Keys
+export const getMyKeys = () => get<ApiKey[]>('/keys');
+export const getAllKeys = () => get<ApiKey[]>('/keys/all');
+export const getKeyDetail = (id: number) => get<ApiKeyDetail>(`/keys/${id}`);
+export const createKey = (req: CreateApiKeyRequest) => post<ApiKeyCreateResponse>('/keys', req);
+export const revokeKey = (id: number) => put<void>(`/keys/${id}/revoke`);
+
+// Requests
+export const createKeyRequest = (req: ApiKeyRequestCreateDto) =>
+  post<ApiKeyRequest>('/keys/requests', req);
+export const getMyRequests = () => get<ApiKeyRequest[]>('/keys/requests/my');
+export const getAllRequests = () => get<ApiKeyRequest[]>('/keys/requests');
+export const reviewRequest = (id: number, req: ApiKeyRequestReviewDto) =>
+  put<ApiKeyCreateResponse | null>(`/keys/requests/${id}/review`, req);
+
+// Permissions
+export const getPermissions = (keyId: number) => get<Permission[]>(`/keys/${keyId}/permissions`);
+export const updatePermissions = (keyId: number, req: UpdatePermissionsRequest) =>
+  put<Permission[]>(`/keys/${keyId}/permissions`, req);
diff --git a/frontend/src/services/authService.ts b/frontend/src/services/authService.ts
new file mode 100644
index 0000000..4e453ad
--- /dev/null
+++ b/frontend/src/services/authService.ts
@@ -0,0 +1,67 @@
+import { post } from './apiClient';
+import type { LoginRequest, LoginResponse, User } from '../types/auth';
+
+const TOKEN_KEY = 'snp_access_token';
+const REFRESH_TOKEN_KEY = 'snp_refresh_token';
+const USER_KEY = 'snp_user';
+
+export const login = async (req: LoginRequest): Promise<LoginResponse> => {
+  const response = await post<LoginResponse>('/auth/login', req);
+
+  if (!response.success || !response.data) {
+    throw new Error(response.message || '로그인에 실패했습니다.');
+  }
+
+  const data = response.data;
+  localStorage.setItem(TOKEN_KEY, data.accessToken);
+  localStorage.setItem(REFRESH_TOKEN_KEY, data.refreshToken);
+  localStorage.setItem(USER_KEY, JSON.stringify({
+    loginId: data.loginId,
+    userName: data.userName,
+    role: data.role,
+  }));
+
+  return data;
+};
+
+export const logout = async (): Promise<void> => {
+  try {
+    await post('/auth/logout');
+  } finally {
+    localStorage.removeItem(TOKEN_KEY);
+    localStorage.removeItem(REFRESH_TOKEN_KEY);
+    localStorage.removeItem(USER_KEY);
+  }
+};
+
+export const refreshToken = async (): Promise<void> => {
+  const storedRefreshToken = localStorage.getItem(REFRESH_TOKEN_KEY);
+  if (!storedRefreshToken) {
+    throw new Error('No refresh token available');
+  }
+
+  const response = await post<{ accessToken: string }>('/auth/refresh', {
+    refreshToken: storedRefreshToken,
+  });
+
+  if (!response.success || !response.data) {
+    throw new Error('Token refresh failed');
+  }
+
+  localStorage.setItem(TOKEN_KEY, response.data.accessToken);
+};
+
+export const getStoredUser = (): User | null => {
+  const userStr = localStorage.getItem(USER_KEY);
+  if (!userStr) return null;
+
+  try {
+    return JSON.parse(userStr) as User;
+  } catch {
+    return null;
+  }
+};
+
+export const getAccessToken = (): string | null => {
+  return localStorage.getItem(TOKEN_KEY);
+};
diff --git a/frontend/src/services/dashboardService.ts b/frontend/src/services/dashboardService.ts
new file mode 100644
index 0000000..9751aa9
--- /dev/null
+++ b/frontend/src/services/dashboardService.ts
@@ -0,0 +1,14 @@
+import { get } from './apiClient';
+import type { DashboardStats, HourlyTrend, ServiceRatio, ErrorTrend, TopApi, TenantRatio } from '../types/dashboard';
+import type { RequestLog } from '../types/monitoring';
+import type { HeartbeatStatus } from '../types/service';
+
+export const getSummary = () => get<DashboardStats>('/dashboard/summary');
+export const getHourlyTrend = () => get<HourlyTrend[]>('/dashboard/hourly-trend');
+export const getServiceRatio = () => get<ServiceRatio[]>('/dashboard/service-ratio');
+export const getErrorTrend = () => get<ErrorTrend[]>('/dashboard/error-trend');
+export const getTopApis = (limit = 10) => get<TopApi[]>(`/dashboard/top-apis?limit=${limit}`);
+export const getTenantRequestRatio = () => get<TenantRatio[]>('/dashboard/tenant-request-ratio');
+export const getTenantUserRatio = () => get<TenantRatio[]>('/dashboard/tenant-user-ratio');
+export const getRecentLogs = () => get<RequestLog[]>('/dashboard/recent-logs');
+export const getHeartbeat = () => get<HeartbeatStatus[]>('/dashboard/heartbeat');
diff --git a/frontend/src/services/heartbeatService.ts b/frontend/src/services/heartbeatService.ts
new file mode 100644
index 0000000..13736de
--- /dev/null
+++ b/frontend/src/services/heartbeatService.ts
@@ -0,0 +1,8 @@
+import { get, post } from './apiClient';
+import type { HeartbeatStatus, HealthHistory, ServiceStatusDetail } from '../types/service';
+
+export const getHeartbeatStatus = () => get<HeartbeatStatus[]>('/heartbeat/status');
+export const getHealthHistory = (serviceId: number) => get<HealthHistory[]>(`/heartbeat/${serviceId}/history`);
+export const triggerCheck = (serviceId: number) => post<HeartbeatStatus>(`/heartbeat/${serviceId}/check`);
+export const getAllStatusDetail = () => get<ServiceStatusDetail[]>('/heartbeat/status/detail');
+export const getServiceStatusDetail = (serviceId: number) => get<ServiceStatusDetail>(`/heartbeat/${serviceId}/status/detail`);
diff --git a/frontend/src/services/monitoringService.ts b/frontend/src/services/monitoringService.ts
new file mode 100644
index 0000000..264cb59
--- /dev/null
+++ b/frontend/src/services/monitoringService.ts
@@ -0,0 +1,12 @@
+import { get } from './apiClient';
+import type { RequestLog, PageResponse } from '../types/monitoring';
+
+export const searchLogs = (params: Record<string, string | number | undefined>) => {
+  const query = Object.entries(params)
+    .filter(([, v]) => v !== undefined && v !== '')
+    .map(([k, v]) => `${k}=${encodeURIComponent(String(v))}`)
+    .join('&');
+  return get<PageResponse<RequestLog>>(`/monitoring/logs${query ? '?' + query : ''}`);
+};
+
+export const getLogDetail = (id: number) => get<RequestLog>(`/monitoring/logs/${id}`);
diff --git a/frontend/src/services/serviceService.ts b/frontend/src/services/serviceService.ts
new file mode 100644
index 0000000..09ac352
--- /dev/null
+++ b/frontend/src/services/serviceService.ts
@@ -0,0 +1,15 @@
+import { get, post, put } from './apiClient';
+import type {
+  ServiceInfo,
+  ServiceApi,
+  CreateServiceRequest,
+  UpdateServiceRequest,
+  CreateServiceApiRequest,
+} from '../types/service';
+
+export const getServices = () => get<ServiceInfo[]>('/services');
+export const createService = (req: CreateServiceRequest) => post<ServiceInfo>('/services', req);
+export const updateService = (id: number, req: UpdateServiceRequest) => put<ServiceInfo>(`/services/${id}`, req);
+export const getServiceApis = (serviceId: number) => get<ServiceApi[]>(`/services/${serviceId}/apis`);
+export const createServiceApi = (serviceId: number, req: CreateServiceApiRequest) =>
+  post<ServiceApi>(`/services/${serviceId}/apis`, req);
diff --git a/frontend/src/services/tenantService.ts b/frontend/src/services/tenantService.ts
new file mode 100644
index 0000000..07931b4
--- /dev/null
+++ b/frontend/src/services/tenantService.ts
@@ -0,0 +1,6 @@
+import { get, post, put } from './apiClient';
+import type { Tenant, CreateTenantRequest, UpdateTenantRequest } from '../types/tenant';
+
+export const getTenants = () => get<Tenant[]>('/tenants');
+export const createTenant = (req: CreateTenantRequest) => post<Tenant>('/tenants', req);
+export const updateTenant = (id: number, req: UpdateTenantRequest) => put<Tenant>(`/tenants/${id}`, req);
diff --git a/frontend/src/services/userService.ts b/frontend/src/services/userService.ts
new file mode 100644
index 0000000..cc7755e
--- /dev/null
+++ b/frontend/src/services/userService.ts
@@ -0,0 +1,8 @@
+import { get, post, put, del } from './apiClient';
+import type { UserDetail, CreateUserRequest, UpdateUserRequest } from '../types/user';
+
+export const getUsers = () => get<UserDetail[]>('/users');
+export const getUser = (id: number) => get<UserDetail>(`/users/${id}`);
+export const createUser = (req: CreateUserRequest) => post<UserDetail>('/users', req);
+export const updateUser = (id: number, req: UpdateUserRequest) => put<UserDetail>(`/users/${id}`, req);
+export const deactivateUser = (id: number) => del<void>(`/users/${id}`);
diff --git a/frontend/src/store/AuthContext.tsx b/frontend/src/store/AuthContext.tsx
new file mode 100644
index 0000000..a6d8ff4
--- /dev/null
+++ b/frontend/src/store/AuthContext.tsx
@@ -0,0 +1,78 @@
+import { createContext, useState, useEffect, useCallback } from 'react';
+import type { ReactNode } from 'react';
+import type { User } from '../types/auth';
+import * as authService from '../services/authService';
+
+interface AuthState {
+  user: User | null;
+  isAuthenticated: boolean;
+  isLoading: boolean;
+}
+
+interface AuthContextValue extends AuthState {
+  login: (loginId: string, password: string) => Promise<void>;
+  logout: () => Promise<void>;
+}
+
+export const AuthContext = createContext<AuthContextValue | null>(null);
+
+interface AuthProviderProps {
+  children: ReactNode;
+}
+
+const AuthProvider = ({ children }: AuthProviderProps) => {
+  const [state, setState] = useState<AuthState>({
+    user: null,
+    isAuthenticated: false,
+    isLoading: true,
+  });
+
+  useEffect(() => {
+    const storedUser = authService.getStoredUser();
+    const token = authService.getAccessToken();
+
+    if (storedUser && token) {
+      setState({
+        user: storedUser,
+        isAuthenticated: true,
+        isLoading: false,
+      });
+    } else {
+      setState({
+        user: null,
+        isAuthenticated: false,
+        isLoading: false,
+      });
+    }
+  }, []);
+
+  const login = useCallback(async (loginId: string, password: string) => {
+    const response = await authService.login({ loginId, password });
+    setState({
+      user: {
+        loginId: response.loginId,
+        userName: response.userName,
+        role: response.role,
+      },
+      isAuthenticated: true,
+      isLoading: false,
+    });
+  }, []);
+
+  const logout = useCallback(async () => {
+    await authService.logout();
+    setState({
+      user: null,
+      isAuthenticated: false,
+      isLoading: false,
+    });
+  }, []);
+
+  return (
+    <AuthContext.Provider value={{ ...state, login, logout }}>
+      {children}
+    </AuthContext.Provider>
+  );
+};
+
+export default AuthProvider;
diff --git a/frontend/src/types/api.ts b/frontend/src/types/api.ts
new file mode 100644
index 0000000..a12cbed
--- /dev/null
+++ b/frontend/src/types/api.ts
@@ -0,0 +1,5 @@
+export interface ApiResponse<T> {
+  success: boolean;
+  message?: string;
+  data?: T;
+}
diff --git a/frontend/src/types/apikey.ts b/frontend/src/types/apikey.ts
new file mode 100644
index 0000000..3650b1d
--- /dev/null
+++ b/frontend/src/types/apikey.ts
@@ -0,0 +1,82 @@
+export interface ApiKey {
+  apiKeyId: number;
+  keyName: string;
+  apiKeyPrefix: string;
+  maskedKey: string;
+  status: 'PENDING' | 'ACTIVE' | 'INACTIVE' | 'EXPIRED' | 'REVOKED';
+  expiresAt: string | null;
+  lastUsedAt: string | null;
+  createdAt: string;
+}
+
+export interface ApiKeyDetail extends ApiKey {
+  decryptedKey: string;
+  userId: number;
+  userName: string;
+}
+
+export interface ApiKeyCreateResponse {
+  apiKeyId: number;
+  keyName: string;
+  rawKey: string;
+  apiKeyPrefix: string;
+  status: string;
+}
+
+export interface CreateApiKeyRequest {
+  keyName: string;
+}
+
+export interface ApiKeyRequest {
+  requestId: number;
+  userId: number;
+  userName: string;
+  keyName: string;
+  purpose: string | null;
+  requestedApiIds: number[];
+  status: 'PENDING' | 'APPROVED' | 'REJECTED';
+  reviewedByUserId: number | null;
+  reviewerName: string | null;
+  reviewComment: string | null;
+  reviewedAt: string | null;
+  createdAt: string;
+  serviceIp: string | null;
+  servicePurpose: string | null;
+  dailyRequestEstimate: number | null;
+  usageFromDate: string | null;
+  usageToDate: string | null;
+}
+
+export interface ApiKeyRequestCreateDto {
+  keyName: string;
+  purpose?: string;
+  requestedApiIds: number[];
+  serviceIp?: string;
+  servicePurpose?: string;
+  dailyRequestEstimate?: number;
+  usageFromDate?: string;
+  usageToDate?: string;
+}
+
+export interface ApiKeyRequestReviewDto {
+  status: 'APPROVED' | 'REJECTED';
+  reviewComment?: string;
+  adjustedApiIds?: number[];
+  adjustedFromDate?: string;
+  adjustedToDate?: string;
+}
+
+export interface Permission {
+  permissionId: number;
+  apiId: number;
+  apiPath: string;
+  apiMethod: string;
+  apiName: string;
+  serviceName: string;
+  isActive: boolean;
+  grantedAt: string;
+}
+
+export interface UpdatePermissionsRequest {
+  apiIds: number[];
+}
diff --git a/frontend/src/types/auth.ts b/frontend/src/types/auth.ts
new file mode 100644
index 0000000..009136b
--- /dev/null
+++ b/frontend/src/types/auth.ts
@@ -0,0 +1,19 @@
+export interface LoginRequest {
+  loginId: string;
+  password: string;
+}
+
+export interface LoginResponse {
+  accessToken: string;
+  refreshToken: string;
+  loginId: string;
+  userName: string;
+  role: string;
+  expiresIn: number;
+}
+
+export interface User {
+  loginId: string;
+  userName: string;
+  role: string;
+}
diff --git a/frontend/src/types/dashboard.ts b/frontend/src/types/dashboard.ts
new file mode 100644
index 0000000..9e3c472
--- /dev/null
+++ b/frontend/src/types/dashboard.ts
@@ -0,0 +1,39 @@
+export interface DashboardStats {
+  totalRequests: number;
+  yesterdayRequests: number;
+  changePercent: number;
+  successRate: number;
+  failureCount: number;
+  avgResponseTime: number;
+  activeUserCount: number;
+}
+
+export interface HourlyTrend {
+  hour: number;
+  successCount: number;
+  failureCount: number;
+}
+
+export interface ServiceRatio {
+  serviceName: string;
+  count: number;
+}
+
+export interface ErrorTrend {
+  hour: number;
+  serviceName: string;
+  errorRate: number;
+}
+
+export interface TenantRatio {
+  tenantName: string;
+  count: number;
+}
+
+export interface TopApi {
+  serviceName: string;
+  apiName: string;
+  requestUrl: string;
+  requestMethod: string;
+  count: number;
+}
diff --git a/frontend/src/types/monitoring.ts b/frontend/src/types/monitoring.ts
new file mode 100644
index 0000000..8d8f3ef
--- /dev/null
+++ b/frontend/src/types/monitoring.ts
@@ -0,0 +1,37 @@
+export interface RequestLog {
+  logId: number;
+  requestUrl: string;
+  requestMethod: string;
+  requestStatus: string;
+  requestIp: string;
+  responseStatus: number | null;
+  responseTime: number | null;
+  responseSize: number | null;
+  errorMessage: string | null;
+  requestedAt: string;
+  serviceId: number | null;
+  serviceName: string | null;
+  apiKeyPrefix: string | null;
+  userName: string | null;
+  requestHeaders: string | null;
+  requestParams: string | null;
+}
+
+export interface RequestLogSearch {
+  startDate?: string;
+  endDate?: string;
+  serviceId?: number;
+  requestStatus?: string;
+  requestMethod?: string;
+  requestIp?: string;
+  page: number;
+  size: number;
+}
+
+export interface PageResponse<T> {
+  content: T[];
+  page: number;
+  size: number;
+  totalElements: number;
+  totalPages: number;
+}
diff --git a/frontend/src/types/service.ts b/frontend/src/types/service.ts
new file mode 100644
index 0000000..477df58
--- /dev/null
+++ b/frontend/src/types/service.ts
@@ -0,0 +1,95 @@
+export interface ServiceInfo {
+  serviceId: number;
+  serviceCode: string;
+  serviceName: string;
+  serviceUrl: string | null;
+  description: string | null;
+  healthCheckUrl: string | null;
+  healthCheckInterval: number;
+  healthStatus: 'UP' | 'DOWN' | 'UNKNOWN';
+  healthCheckedAt: string | null;
+  healthResponseTime: number | null;
+  isActive: boolean;
+  createdAt: string;
+}
+
+export interface ServiceApi {
+  apiId: number;
+  serviceId: number;
+  apiPath: string;
+  apiMethod: string;
+  apiName: string;
+  description: string | null;
+  isActive: boolean;
+  createdAt: string;
+}
+
+export interface CreateServiceRequest {
+  serviceCode: string;
+  serviceName: string;
+  serviceUrl?: string;
+  description?: string;
+  healthCheckUrl?: string;
+  healthCheckInterval?: number;
+}
+
+export interface UpdateServiceRequest {
+  serviceName?: string;
+  serviceUrl?: string;
+  description?: string;
+  healthCheckUrl?: string;
+  healthCheckInterval?: number;
+  isActive?: boolean;
+}
+
+export interface CreateServiceApiRequest {
+  apiPath: string;
+  apiMethod: string;
+  apiName: string;
+  description?: string;
+}
+
+export interface HeartbeatStatus {
+  serviceId: number;
+  serviceCode: string;
+  serviceName: string;
+  healthStatus: string;
+  healthCheckedAt: string | null;
+  healthResponseTime: number | null;
+}
+
+export interface DailyUptime {
+  date: string;
+  totalChecks: number;
+  upChecks: number;
+  uptimePercent: number;
+}
+
+export interface RecentCheck {
+  status: string;
+  responseTime: number | null;
+  errorMessage: string | null;
+  checkedAt: string;
+}
+
+export interface ServiceStatusDetail {
+  serviceId: number;
+  serviceCode: string;
+  serviceName: string;
+  currentStatus: string;
+  lastResponseTime: number | null;
+  lastCheckedAt: string | null;
+  uptimePercent90d: number;
+  dailyUptime: DailyUptime[];
+  recentChecks: RecentCheck[];
+}
+
+export interface HealthHistory {
+  logId: number;
+  serviceId: number;
+  previousStatus: string | null;
+  currentStatus: string;
+  responseTime: number | null;
+  errorMessage: string | null;
+  checkedAt: string;
+}
diff --git a/frontend/src/types/tenant.ts b/frontend/src/types/tenant.ts
new file mode 100644
index 0000000..11e83f8
--- /dev/null
+++ b/frontend/src/types/tenant.ts
@@ -0,0 +1,21 @@
+export interface Tenant {
+  tenantId: number;
+  tenantCode: string;
+  tenantName: string;
+  description: string | null;
+  isActive: boolean;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export interface CreateTenantRequest {
+  tenantCode: string;
+  tenantName: string;
+  description?: string;
+}
+
+export interface UpdateTenantRequest {
+  tenantName: string;
+  description?: string;
+  isActive?: boolean;
+}
diff --git a/frontend/src/types/user.ts b/frontend/src/types/user.ts
new file mode 100644
index 0000000..eac5e7d
--- /dev/null
+++ b/frontend/src/types/user.ts
@@ -0,0 +1,30 @@
+export interface UserDetail {
+  userId: number;
+  tenantId: number | null;
+  tenantName: string | null;
+  loginId: string;
+  userName: string;
+  email: string | null;
+  role: string;
+  isActive: boolean;
+  lastLoginAt: string | null;
+  createdAt: string;
+}
+
+export interface CreateUserRequest {
+  tenantId?: number;
+  loginId: string;
+  password: string;
+  userName: string;
+  email?: string;
+  role: string;
+}
+
+export interface UpdateUserRequest {
+  tenantId?: number;
+  userName?: string;
+  email?: string;
+  role?: string;
+  password?: string;
+  isActive?: boolean;
+}
diff --git a/pom.xml b/pom.xml
index c9d2cc6..82c2ed2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -104,6 +104,25 @@
             <version>2.3.0</version>
         </dependency>
 
+        <!-- JWT (jjwt) -->
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-api</artifactId>
+            <version>0.12.6</version>
+        </dependency>
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-impl</artifactId>
+            <version>0.12.6</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-jackson</artifactId>
+            <version>0.12.6</version>
+            <scope>runtime</scope>
+        </dependency>
+
         <!-- Test Dependencies -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/src/main/java/com/gcsc/connection/apikey/controller/ApiKeyController.java b/src/main/java/com/gcsc/connection/apikey/controller/ApiKeyController.java
new file mode 100644
index 0000000..da70468
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/controller/ApiKeyController.java
@@ -0,0 +1,114 @@
+package com.gcsc.connection.apikey.controller;
+
+import com.gcsc.connection.apikey.dto.ApiKeyCreateResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyDetailResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyResponse;
+import com.gcsc.connection.apikey.dto.CreateApiKeyRequest;
+import com.gcsc.connection.apikey.dto.PermissionResponse;
+import com.gcsc.connection.apikey.dto.UpdatePermissionsRequest;
+import com.gcsc.connection.apikey.service.ApiKeyPermissionService;
+import com.gcsc.connection.apikey.service.ApiKeyService;
+import com.gcsc.connection.common.dto.ApiResponse;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * API Key 관리 API
+ */
+@RestController
+@RequestMapping("/api/keys")
+@RequiredArgsConstructor
+public class ApiKeyController {
+
+    private final ApiKeyService apiKeyService;
+    private final ApiKeyPermissionService apiKeyPermissionService;
+
+    /**
+     * 내 API Key 목록 조회
+     */
+    @GetMapping
+    public ResponseEntity<ApiResponse<List<ApiKeyResponse>>> getMyKeys() {
+        Long userId = getCurrentUserId();
+        List<ApiKeyResponse> keys = apiKeyService.getMyKeys(userId);
+        return ResponseEntity.ok(ApiResponse.ok(keys));
+    }
+
+    /**
+     * 전체 API Key 목록 조회 (관리자용)
+     */
+    @GetMapping("/all")
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<List<ApiKeyResponse>>> getAllKeys() {
+        List<ApiKeyResponse> keys = apiKeyService.getAllKeys();
+        return ResponseEntity.ok(ApiResponse.ok(keys));
+    }
+
+    /**
+     * API Key 상세 조회 (복호화된 키 포함, 관리자 전용)
+     */
+    @GetMapping("/{id}")
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<ApiKeyDetailResponse>> getKeyDetail(@PathVariable Long id) {
+        ApiKeyDetailResponse detail = apiKeyService.getKeyDetail(id);
+        return ResponseEntity.ok(ApiResponse.ok(detail));
+    }
+
+    /**
+     * API Key 생성 (관리자 전용)
+     */
+    @PostMapping
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<ApiKeyCreateResponse>> createKey(
+            @RequestBody @Valid CreateApiKeyRequest request) {
+        Long userId = getCurrentUserId();
+        ApiKeyCreateResponse response = apiKeyService.createKey(userId, request);
+        return ResponseEntity.ok(ApiResponse.ok(response));
+    }
+
+    /**
+     * API Key 폐기
+     */
+    @PutMapping("/{id}/revoke")
+    public ResponseEntity<ApiResponse<Void>> revokeKey(@PathVariable Long id) {
+        apiKeyService.revokeKey(id);
+        return ResponseEntity.ok(ApiResponse.ok(null, "API Key가 폐기되었습니다"));
+    }
+
+    /**
+     * API Key 권한 목록 조회
+     */
+    @GetMapping("/{id}/permissions")
+    public ResponseEntity<ApiResponse<List<PermissionResponse>>> getPermissions(@PathVariable Long id) {
+        List<PermissionResponse> permissions = apiKeyPermissionService.getPermissions(id);
+        return ResponseEntity.ok(ApiResponse.ok(permissions));
+    }
+
+    /**
+     * API Key 권한 수정 (관리자/매니저 전용)
+     */
+    @PutMapping("/{id}/permissions")
+    @PreAuthorize("hasAnyRole('ADMIN','MANAGER')")
+    public ResponseEntity<ApiResponse<List<PermissionResponse>>> updatePermissions(
+            @PathVariable Long id,
+            @RequestBody @Valid UpdatePermissionsRequest request) {
+        Long userId = getCurrentUserId();
+        List<PermissionResponse> permissions = apiKeyPermissionService.updatePermissions(id, userId, request);
+        return ResponseEntity.ok(ApiResponse.ok(permissions));
+    }
+
+    private Long getCurrentUserId() {
+        return Long.parseLong(SecurityContextHolder.getContext().getAuthentication().getName());
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/controller/ApiKeyRequestController.java b/src/main/java/com/gcsc/connection/apikey/controller/ApiKeyRequestController.java
new file mode 100644
index 0000000..200d771
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/controller/ApiKeyRequestController.java
@@ -0,0 +1,91 @@
+package com.gcsc.connection.apikey.controller;
+
+import com.gcsc.connection.apikey.dto.ApiKeyCreateResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyRequestCreateDto;
+import com.gcsc.connection.apikey.dto.ApiKeyRequestResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyRequestReviewDto;
+import com.gcsc.connection.apikey.service.ApiKeyRequestService;
+import com.gcsc.connection.common.dto.ApiResponse;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * API Key 신청/심사 API
+ */
+@RestController
+@RequestMapping("/api/keys/requests")
+@RequiredArgsConstructor
+public class ApiKeyRequestController {
+
+    private final ApiKeyRequestService apiKeyRequestService;
+
+    /**
+     * API Key 신청 생성
+     */
+    @PostMapping
+    public ResponseEntity<ApiResponse<ApiKeyRequestResponse>> createRequest(
+            @RequestBody @Valid ApiKeyRequestCreateDto request) {
+        Long userId = getCurrentUserId();
+        ApiKeyRequestResponse response = apiKeyRequestService.createRequest(userId, request);
+        return ResponseEntity.ok(ApiResponse.ok(response));
+    }
+
+    /**
+     * 내 신청 목록 조회
+     */
+    @GetMapping("/my")
+    public ResponseEntity<ApiResponse<List<ApiKeyRequestResponse>>> getMyRequests() {
+        Long userId = getCurrentUserId();
+        List<ApiKeyRequestResponse> responses = apiKeyRequestService.getMyRequests(userId);
+        return ResponseEntity.ok(ApiResponse.ok(responses));
+    }
+
+    /**
+     * 신청 목록 조회 (관리자/매니저용)
+     */
+    @GetMapping
+    @PreAuthorize("hasAnyRole('ADMIN','MANAGER')")
+    public ResponseEntity<ApiResponse<List<ApiKeyRequestResponse>>> getRequests(
+            @RequestParam(required = false) String status) {
+        List<ApiKeyRequestResponse> responses;
+        if ("PENDING".equalsIgnoreCase(status)) {
+            responses = apiKeyRequestService.getPendingRequests();
+        } else {
+            responses = apiKeyRequestService.getAllRequests();
+        }
+        return ResponseEntity.ok(ApiResponse.ok(responses));
+    }
+
+    /**
+     * 신청 심사 (승인/거절)
+     */
+    @PutMapping("/{id}/review")
+    @PreAuthorize("hasAnyRole('ADMIN','MANAGER')")
+    public ResponseEntity<ApiResponse<ApiKeyCreateResponse>> reviewRequest(
+            @PathVariable Long id,
+            @RequestBody @Valid ApiKeyRequestReviewDto request) {
+        Long reviewerId = getCurrentUserId();
+        ApiKeyCreateResponse response = apiKeyRequestService.reviewRequest(id, reviewerId, request);
+        if (response != null) {
+            return ResponseEntity.ok(ApiResponse.ok(response, "신청이 승인되었습니다"));
+        }
+        return ResponseEntity.ok(ApiResponse.ok(null, "신청이 거절되었습니다"));
+    }
+
+    private Long getCurrentUserId() {
+        return Long.parseLong(SecurityContextHolder.getContext().getAuthentication().getName());
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyCreateResponse.java b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyCreateResponse.java
new file mode 100644
index 0000000..8c853c9
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyCreateResponse.java
@@ -0,0 +1,10 @@
+package com.gcsc.connection.apikey.dto;
+
+public record ApiKeyCreateResponse(
+    Long apiKeyId,
+    String keyName,
+    String rawKey,
+    String apiKeyPrefix,
+    String status
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyDetailResponse.java b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyDetailResponse.java
new file mode 100644
index 0000000..104bb8d
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyDetailResponse.java
@@ -0,0 +1,34 @@
+package com.gcsc.connection.apikey.dto;
+
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+
+import java.time.LocalDateTime;
+
+public record ApiKeyDetailResponse(
+    Long apiKeyId,
+    String keyName,
+    String apiKeyPrefix,
+    String decryptedKey,
+    String status,
+    Long userId,
+    String userName,
+    LocalDateTime expiresAt,
+    LocalDateTime lastUsedAt,
+    LocalDateTime createdAt
+) {
+
+    public static ApiKeyDetailResponse from(SnpApiKey key, String decryptedKey) {
+        return new ApiKeyDetailResponse(
+            key.getApiKeyId(),
+            key.getKeyName(),
+            key.getApiKeyPrefix(),
+            decryptedKey,
+            key.getStatus().name(),
+            key.getUser().getUserId(),
+            key.getUser().getUserName(),
+            key.getExpiresAt(),
+            key.getLastUsedAt(),
+            key.getCreatedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestCreateDto.java b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestCreateDto.java
new file mode 100644
index 0000000..ea3ef3d
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestCreateDto.java
@@ -0,0 +1,17 @@
+package com.gcsc.connection.apikey.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+import java.util.List;
+
+public record ApiKeyRequestCreateDto(
+    @NotBlank String keyName,
+    String purpose,
+    List<Long> requestedApiIds,
+    String serviceIp,
+    String servicePurpose,
+    Long dailyRequestEstimate,
+    String usageFromDate,
+    String usageToDate
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestResponse.java b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestResponse.java
new file mode 100644
index 0000000..983b24b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestResponse.java
@@ -0,0 +1,71 @@
+package com.gcsc.connection.apikey.dto;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.gcsc.connection.apikey.entity.SnpApiKeyRequest;
+
+import java.time.LocalDateTime;
+import java.util.Collections;
+import java.util.List;
+
+public record ApiKeyRequestResponse(
+    Long requestId,
+    Long userId,
+    String userName,
+    String keyName,
+    String purpose,
+    List<Long> requestedApiIds,
+    String status,
+    Long reviewedByUserId,
+    String reviewerName,
+    String reviewComment,
+    LocalDateTime reviewedAt,
+    LocalDateTime createdAt,
+    String serviceIp,
+    String servicePurpose,
+    Long dailyRequestEstimate,
+    LocalDateTime usageFromDate,
+    LocalDateTime usageToDate
+) {
+
+    private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
+
+    public static ApiKeyRequestResponse from(SnpApiKeyRequest request) {
+        List<Long> apiIds = parseApiIds(request.getRequestedApis());
+        Long reviewerUserId = request.getReviewedBy() != null
+            ? request.getReviewedBy().getUserId() : null;
+        String reviewerName = request.getReviewedBy() != null
+            ? request.getReviewedBy().getUserName() : null;
+
+        return new ApiKeyRequestResponse(
+            request.getRequestId(),
+            request.getUser().getUserId(),
+            request.getUser().getUserName(),
+            request.getKeyName(),
+            request.getPurpose(),
+            apiIds,
+            request.getStatus().name(),
+            reviewerUserId,
+            reviewerName,
+            request.getReviewComment(),
+            request.getReviewedAt(),
+            request.getCreatedAt(),
+            request.getServiceIp(),
+            request.getServicePurpose(),
+            request.getDailyRequestEstimate(),
+            request.getUsageFromDate(),
+            request.getUsageToDate()
+        );
+    }
+
+    private static List<Long> parseApiIds(String json) {
+        if (json == null || json.isBlank()) {
+            return Collections.emptyList();
+        }
+        try {
+            return OBJECT_MAPPER.readValue(json, new TypeReference<>() {});
+        } catch (Exception e) {
+            return Collections.emptyList();
+        }
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestReviewDto.java b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestReviewDto.java
new file mode 100644
index 0000000..9daad38
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyRequestReviewDto.java
@@ -0,0 +1,14 @@
+package com.gcsc.connection.apikey.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+import java.util.List;
+
+public record ApiKeyRequestReviewDto(
+    @NotBlank String status,
+    String reviewComment,
+    List<Long> adjustedApiIds,
+    String adjustedFromDate,
+    String adjustedToDate
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyResponse.java b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyResponse.java
new file mode 100644
index 0000000..6aef1d0
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/ApiKeyResponse.java
@@ -0,0 +1,31 @@
+package com.gcsc.connection.apikey.dto;
+
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+
+import java.time.LocalDateTime;
+
+public record ApiKeyResponse(
+    Long apiKeyId,
+    String keyName,
+    String apiKeyPrefix,
+    String maskedKey,
+    String status,
+    LocalDateTime expiresAt,
+    LocalDateTime lastUsedAt,
+    LocalDateTime createdAt
+) {
+
+    public static ApiKeyResponse from(SnpApiKey key) {
+        String masked = key.getApiKeyPrefix() + "****...****";
+        return new ApiKeyResponse(
+            key.getApiKeyId(),
+            key.getKeyName(),
+            key.getApiKeyPrefix(),
+            masked,
+            key.getStatus().name(),
+            key.getExpiresAt(),
+            key.getLastUsedAt(),
+            key.getCreatedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/CreateApiKeyRequest.java b/src/main/java/com/gcsc/connection/apikey/dto/CreateApiKeyRequest.java
new file mode 100644
index 0000000..ded5744
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/CreateApiKeyRequest.java
@@ -0,0 +1,8 @@
+package com.gcsc.connection.apikey.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record CreateApiKeyRequest(
+    @NotBlank String keyName
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/PermissionResponse.java b/src/main/java/com/gcsc/connection/apikey/dto/PermissionResponse.java
new file mode 100644
index 0000000..5a4f20e
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/PermissionResponse.java
@@ -0,0 +1,30 @@
+package com.gcsc.connection.apikey.dto;
+
+import com.gcsc.connection.apikey.entity.SnpApiPermission;
+
+import java.time.LocalDateTime;
+
+public record PermissionResponse(
+    Long permissionId,
+    Long apiId,
+    String apiPath,
+    String apiMethod,
+    String apiName,
+    String serviceName,
+    Boolean isActive,
+    LocalDateTime grantedAt
+) {
+
+    public static PermissionResponse from(SnpApiPermission perm) {
+        return new PermissionResponse(
+            perm.getPermissionId(),
+            perm.getApi().getApiId(),
+            perm.getApi().getApiPath(),
+            perm.getApi().getApiMethod(),
+            perm.getApi().getApiName(),
+            perm.getApi().getService().getServiceName(),
+            perm.getIsActive(),
+            perm.getGrantedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/dto/UpdatePermissionsRequest.java b/src/main/java/com/gcsc/connection/apikey/dto/UpdatePermissionsRequest.java
new file mode 100644
index 0000000..c16c455
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/dto/UpdatePermissionsRequest.java
@@ -0,0 +1,8 @@
+package com.gcsc.connection.apikey.dto;
+
+import java.util.List;
+
+public record UpdatePermissionsRequest(
+    List<Long> apiIds
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/entity/ApiKeyStatus.java b/src/main/java/com/gcsc/connection/apikey/entity/ApiKeyStatus.java
new file mode 100644
index 0000000..3f52999
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/entity/ApiKeyStatus.java
@@ -0,0 +1,9 @@
+package com.gcsc.connection.apikey.entity;
+
+public enum ApiKeyStatus {
+    PENDING,
+    ACTIVE,
+    INACTIVE,
+    EXPIRED,
+    REVOKED
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/entity/KeyRequestStatus.java b/src/main/java/com/gcsc/connection/apikey/entity/KeyRequestStatus.java
new file mode 100644
index 0000000..a7aaa3b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/entity/KeyRequestStatus.java
@@ -0,0 +1,7 @@
+package com.gcsc.connection.apikey.entity;
+
+public enum KeyRequestStatus {
+    PENDING,
+    APPROVED,
+    REJECTED
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/entity/SnpApiKey.java b/src/main/java/com/gcsc/connection/apikey/entity/SnpApiKey.java
new file mode 100644
index 0000000..31f627c
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/entity/SnpApiKey.java
@@ -0,0 +1,90 @@
+package com.gcsc.connection.apikey.entity;
+
+import com.gcsc.connection.common.entity.BaseEntity;
+import com.gcsc.connection.user.entity.SnpUser;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_api_key", schema = "common")
+public class SnpApiKey extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "api_key_id")
+    private Long apiKeyId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id", nullable = false)
+    private SnpUser user;
+
+    @Column(name = "api_key", length = 128, nullable = false, unique = true)
+    private String apiKey;
+
+    @Column(name = "api_key_prefix", length = 10)
+    private String apiKeyPrefix;
+
+    @Column(name = "key_name", length = 200, nullable = false)
+    private String keyName;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "status", length = 20, nullable = false)
+    private ApiKeyStatus status = ApiKeyStatus.PENDING;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "approved_by")
+    private SnpUser approvedBy;
+
+    @Column(name = "approved_at")
+    private LocalDateTime approvedAt;
+
+    @Column(name = "expires_at")
+    private LocalDateTime expiresAt;
+
+    @Column(name = "last_used_at")
+    private LocalDateTime lastUsedAt;
+
+    @Builder
+    public SnpApiKey(SnpUser user, String apiKey, String apiKeyPrefix, String keyName,
+                     ApiKeyStatus status, SnpUser approvedBy, LocalDateTime approvedAt,
+                     LocalDateTime expiresAt) {
+        this.user = user;
+        this.apiKey = apiKey;
+        this.apiKeyPrefix = apiKeyPrefix;
+        this.keyName = keyName;
+        this.status = status != null ? status : ApiKeyStatus.PENDING;
+        this.approvedBy = approvedBy;
+        this.approvedAt = approvedAt;
+        this.expiresAt = expiresAt;
+    }
+
+    public void revoke() {
+        this.status = ApiKeyStatus.REVOKED;
+    }
+
+    public void updateLastUsedAt() {
+        this.lastUsedAt = LocalDateTime.now();
+    }
+
+    public void activate(SnpUser approvedBy) {
+        this.status = ApiKeyStatus.ACTIVE;
+        this.approvedBy = approvedBy;
+        this.approvedAt = LocalDateTime.now();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/entity/SnpApiKeyRequest.java b/src/main/java/com/gcsc/connection/apikey/entity/SnpApiKeyRequest.java
new file mode 100644
index 0000000..c28bf1f
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/entity/SnpApiKeyRequest.java
@@ -0,0 +1,108 @@
+package com.gcsc.connection.apikey.entity;
+
+import com.gcsc.connection.common.entity.BaseEntity;
+import com.gcsc.connection.user.entity.SnpUser;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_api_key_request", schema = "common")
+public class SnpApiKeyRequest extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "request_id")
+    private Long requestId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id", nullable = false)
+    private SnpUser user;
+
+    @Column(name = "key_name", length = 200, nullable = false)
+    private String keyName;
+
+    @Column(name = "purpose", columnDefinition = "TEXT")
+    private String purpose;
+
+    @Column(name = "requested_apis", columnDefinition = "TEXT")
+    private String requestedApis;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "status", length = 20, nullable = false)
+    private KeyRequestStatus status = KeyRequestStatus.PENDING;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "reviewed_by")
+    private SnpUser reviewedBy;
+
+    @Column(name = "reviewed_at")
+    private LocalDateTime reviewedAt;
+
+    @Column(name = "review_comment", columnDefinition = "TEXT")
+    private String reviewComment;
+
+    @Column(name = "service_ip", length = 100)
+    private String serviceIp;
+
+    @Column(name = "service_purpose", length = 50)
+    private String servicePurpose;
+
+    @Column(name = "daily_request_estimate")
+    private Long dailyRequestEstimate;
+
+    @Column(name = "usage_from_date")
+    private LocalDateTime usageFromDate;
+
+    @Column(name = "usage_to_date")
+    private LocalDateTime usageToDate;
+
+    @Builder
+    public SnpApiKeyRequest(SnpUser user, String keyName, String purpose, String requestedApis,
+                            KeyRequestStatus status, String serviceIp, String servicePurpose,
+                            Long dailyRequestEstimate, LocalDateTime usageFromDate,
+                            LocalDateTime usageToDate) {
+        this.user = user;
+        this.keyName = keyName;
+        this.purpose = purpose;
+        this.requestedApis = requestedApis;
+        this.status = status != null ? status : KeyRequestStatus.PENDING;
+        this.serviceIp = serviceIp;
+        this.servicePurpose = servicePurpose;
+        this.dailyRequestEstimate = dailyRequestEstimate;
+        this.usageFromDate = usageFromDate;
+        this.usageToDate = usageToDate;
+    }
+
+    public void approve(SnpUser reviewer, String adjustedApis,
+                        LocalDateTime adjustedFromDate, LocalDateTime adjustedToDate) {
+        this.status = KeyRequestStatus.APPROVED;
+        this.reviewedBy = reviewer;
+        this.reviewedAt = LocalDateTime.now();
+        if (adjustedApis != null) this.requestedApis = adjustedApis;
+        if (adjustedFromDate != null) this.usageFromDate = adjustedFromDate;
+        if (adjustedToDate != null) this.usageToDate = adjustedToDate;
+    }
+
+    public void reject(SnpUser reviewer, String comment) {
+        this.status = KeyRequestStatus.REJECTED;
+        this.reviewedBy = reviewer;
+        this.reviewedAt = LocalDateTime.now();
+        this.reviewComment = comment;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/entity/SnpApiPermission.java b/src/main/java/com/gcsc/connection/apikey/entity/SnpApiPermission.java
new file mode 100644
index 0000000..d66eab0
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/entity/SnpApiPermission.java
@@ -0,0 +1,66 @@
+package com.gcsc.connection.apikey.entity;
+
+import com.gcsc.connection.service.entity.SnpServiceApi;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import jakarta.persistence.UniqueConstraint;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_api_permission", schema = "common",
+    uniqueConstraints = @UniqueConstraint(columnNames = {"api_key_id", "api_id"}))
+public class SnpApiPermission {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "permission_id")
+    private Long permissionId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "api_key_id", nullable = false)
+    private SnpApiKey apiKey;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "api_id", nullable = false)
+    private SnpServiceApi api;
+
+    @Column(name = "is_active", nullable = false)
+    private Boolean isActive = true;
+
+    @Column(name = "granted_by")
+    private Long grantedBy;
+
+    @Column(name = "granted_at", nullable = false)
+    private LocalDateTime grantedAt;
+
+    @Column(name = "revoked_at")
+    private LocalDateTime revokedAt;
+
+    @Builder
+    public SnpApiPermission(SnpApiKey apiKey, SnpServiceApi api, Boolean isActive,
+                            Long grantedBy, LocalDateTime grantedAt) {
+        this.apiKey = apiKey;
+        this.api = api;
+        this.isActive = isActive != null ? isActive : true;
+        this.grantedBy = grantedBy;
+        this.grantedAt = grantedAt != null ? grantedAt : LocalDateTime.now();
+    }
+
+    public void revoke() {
+        this.isActive = false;
+        this.revokedAt = LocalDateTime.now();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/repository/SnpApiKeyRepository.java b/src/main/java/com/gcsc/connection/apikey/repository/SnpApiKeyRepository.java
new file mode 100644
index 0000000..56b7860
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/repository/SnpApiKeyRepository.java
@@ -0,0 +1,16 @@
+package com.gcsc.connection.apikey.repository;
+
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface SnpApiKeyRepository extends JpaRepository<SnpApiKey, Long> {
+
+    Optional<SnpApiKey> findByApiKey(String apiKey);
+
+    List<SnpApiKey> findByUserUserId(Long userId);
+
+    List<SnpApiKey> findByApiKeyPrefix(String apiKeyPrefix);
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/repository/SnpApiKeyRequestRepository.java b/src/main/java/com/gcsc/connection/apikey/repository/SnpApiKeyRequestRepository.java
new file mode 100644
index 0000000..e6d7c66
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/repository/SnpApiKeyRequestRepository.java
@@ -0,0 +1,16 @@
+package com.gcsc.connection.apikey.repository;
+
+import com.gcsc.connection.apikey.entity.KeyRequestStatus;
+import com.gcsc.connection.apikey.entity.SnpApiKeyRequest;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface SnpApiKeyRequestRepository extends JpaRepository<SnpApiKeyRequest, Long> {
+
+    List<SnpApiKeyRequest> findByUserUserId(Long userId);
+
+    List<SnpApiKeyRequest> findByStatus(KeyRequestStatus status);
+
+    List<SnpApiKeyRequest> findAllByOrderByCreatedAtDesc();
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/repository/SnpApiPermissionRepository.java b/src/main/java/com/gcsc/connection/apikey/repository/SnpApiPermissionRepository.java
new file mode 100644
index 0000000..0bdd917
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/repository/SnpApiPermissionRepository.java
@@ -0,0 +1,20 @@
+package com.gcsc.connection.apikey.repository;
+
+import com.gcsc.connection.apikey.entity.SnpApiPermission;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface SnpApiPermissionRepository extends JpaRepository<SnpApiPermission, Long> {
+
+    Optional<SnpApiPermission> findByApiKeyApiKeyIdAndApiApiIdAndIsActiveTrue(Long apiKeyId, Long apiId);
+
+    List<SnpApiPermission> findByApiKeyApiKeyId(Long apiKeyId);
+
+    @Modifying
+    @Query("DELETE FROM SnpApiPermission p WHERE p.apiKey.apiKeyId = :apiKeyId")
+    void deleteByApiKeyApiKeyId(Long apiKeyId);
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/service/ApiKeyPermissionService.java b/src/main/java/com/gcsc/connection/apikey/service/ApiKeyPermissionService.java
new file mode 100644
index 0000000..707061a
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/service/ApiKeyPermissionService.java
@@ -0,0 +1,76 @@
+package com.gcsc.connection.apikey.service;
+
+import com.gcsc.connection.apikey.dto.PermissionResponse;
+import com.gcsc.connection.apikey.dto.UpdatePermissionsRequest;
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+import com.gcsc.connection.apikey.entity.SnpApiPermission;
+import com.gcsc.connection.apikey.repository.SnpApiKeyRepository;
+import com.gcsc.connection.apikey.repository.SnpApiPermissionRepository;
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.service.repository.SnpServiceApiRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * API Key 권한 관리 서비스
+ */
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class ApiKeyPermissionService {
+
+    private final SnpApiPermissionRepository snpApiPermissionRepository;
+    private final SnpApiKeyRepository snpApiKeyRepository;
+    private final SnpServiceApiRepository snpServiceApiRepository;
+
+    /**
+     * API Key 권한 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<PermissionResponse> getPermissions(Long apiKeyId) {
+        return snpApiPermissionRepository.findByApiKeyApiKeyId(apiKeyId).stream()
+            .map(PermissionResponse::from)
+            .toList();
+    }
+
+    /**
+     * API Key 권한 수정 (기존 삭제 후 재생성)
+     */
+    @Transactional
+    public List<PermissionResponse> updatePermissions(Long apiKeyId, Long grantedByUserId,
+                                                      UpdatePermissionsRequest request) {
+        SnpApiKey apiKey = snpApiKeyRepository.findById(apiKeyId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.API_KEY_NOT_FOUND));
+
+        snpApiPermissionRepository.deleteByApiKeyApiKeyId(apiKeyId);
+        snpApiPermissionRepository.flush();
+
+        if (request.apiIds() == null || request.apiIds().isEmpty()) {
+            return List.of();
+        }
+
+        List<SnpApiPermission> permissions = request.apiIds().stream()
+            .map(apiId -> snpServiceApiRepository.findById(apiId)
+                .map(serviceApi -> SnpApiPermission.builder()
+                    .apiKey(apiKey)
+                    .api(serviceApi)
+                    .isActive(true)
+                    .grantedBy(grantedByUserId)
+                    .grantedAt(LocalDateTime.now())
+                    .build())
+                .orElse(null))
+            .filter(perm -> perm != null)
+            .toList();
+
+        List<SnpApiPermission> saved = snpApiPermissionRepository.saveAll(permissions);
+        return saved.stream()
+            .map(PermissionResponse::from)
+            .toList();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/service/ApiKeyRequestService.java b/src/main/java/com/gcsc/connection/apikey/service/ApiKeyRequestService.java
new file mode 100644
index 0000000..359fff8
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/service/ApiKeyRequestService.java
@@ -0,0 +1,238 @@
+package com.gcsc.connection.apikey.service;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.gcsc.connection.apikey.dto.ApiKeyCreateResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyRequestCreateDto;
+import com.gcsc.connection.apikey.dto.ApiKeyRequestResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyRequestReviewDto;
+import com.gcsc.connection.apikey.entity.ApiKeyStatus;
+import com.gcsc.connection.apikey.entity.KeyRequestStatus;
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+import com.gcsc.connection.apikey.entity.SnpApiKeyRequest;
+import com.gcsc.connection.apikey.entity.SnpApiPermission;
+import com.gcsc.connection.apikey.repository.SnpApiKeyRepository;
+import com.gcsc.connection.apikey.repository.SnpApiKeyRequestRepository;
+import com.gcsc.connection.apikey.repository.SnpApiPermissionRepository;
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.common.util.AesEncryptor;
+import com.gcsc.connection.service.repository.SnpServiceApiRepository;
+import com.gcsc.connection.user.entity.SnpUser;
+import com.gcsc.connection.user.repository.SnpUserRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.security.SecureRandom;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * API Key 신청/심사 워크플로우 서비스
+ */
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class ApiKeyRequestService {
+
+    private static final int RAW_KEY_HEX_LENGTH = 32;
+    private static final String KEY_PREFIX = "snp_";
+    private static final int PREFIX_LENGTH = 8;
+
+    private final SnpApiKeyRequestRepository snpApiKeyRequestRepository;
+    private final SnpApiKeyRepository snpApiKeyRepository;
+    private final SnpApiPermissionRepository snpApiPermissionRepository;
+    private final SnpServiceApiRepository snpServiceApiRepository;
+    private final SnpUserRepository snpUserRepository;
+    private final AesEncryptor aesEncryptor;
+    private final ObjectMapper objectMapper;
+
+    /**
+     * API Key 신청 생성
+     */
+    @Transactional
+    public ApiKeyRequestResponse createRequest(Long userId, ApiKeyRequestCreateDto dto) {
+        SnpUser user = snpUserRepository.findById(userId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+
+        String requestedApisJson = toJson(dto.requestedApiIds());
+
+        LocalDateTime fromDate = dto.usageFromDate() != null
+            ? LocalDate.parse(dto.usageFromDate()).atStartOfDay() : null;
+        LocalDateTime toDate = dto.usageToDate() != null
+            ? LocalDate.parse(dto.usageToDate()).atStartOfDay() : null;
+
+        SnpApiKeyRequest request = SnpApiKeyRequest.builder()
+            .user(user)
+            .keyName(dto.keyName())
+            .purpose(dto.purpose())
+            .requestedApis(requestedApisJson)
+            .serviceIp(dto.serviceIp())
+            .servicePurpose(dto.servicePurpose())
+            .dailyRequestEstimate(dto.dailyRequestEstimate())
+            .usageFromDate(fromDate)
+            .usageToDate(toDate)
+            .build();
+
+        SnpApiKeyRequest saved = snpApiKeyRequestRepository.save(request);
+        return ApiKeyRequestResponse.from(saved);
+    }
+
+    /**
+     * 내 신청 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<ApiKeyRequestResponse> getMyRequests(Long userId) {
+        return snpApiKeyRequestRepository.findByUserUserId(userId).stream()
+            .map(ApiKeyRequestResponse::from)
+            .toList();
+    }
+
+    /**
+     * 전체 신청 목록 조회 (최신순)
+     */
+    @Transactional(readOnly = true)
+    public List<ApiKeyRequestResponse> getAllRequests() {
+        return snpApiKeyRequestRepository.findAllByOrderByCreatedAtDesc().stream()
+            .map(ApiKeyRequestResponse::from)
+            .toList();
+    }
+
+    /**
+     * 대기 중인 신청 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<ApiKeyRequestResponse> getPendingRequests() {
+        return snpApiKeyRequestRepository.findByStatus(KeyRequestStatus.PENDING).stream()
+            .map(ApiKeyRequestResponse::from)
+            .toList();
+    }
+
+    /**
+     * 신청 심사 (승인/거절)
+     */
+    @Transactional
+    public ApiKeyCreateResponse reviewRequest(Long requestId, Long reviewerId,
+                                              ApiKeyRequestReviewDto dto) {
+        SnpApiKeyRequest request = snpApiKeyRequestRepository.findById(requestId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.API_KEY_REQUEST_NOT_FOUND));
+
+        if (request.getStatus() != KeyRequestStatus.PENDING) {
+            throw new BusinessException(ErrorCode.API_KEY_REQUEST_ALREADY_PROCESSED);
+        }
+
+        SnpUser reviewer = snpUserRepository.findById(reviewerId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+
+        if ("APPROVED".equals(dto.status())) {
+            return approveRequest(request, reviewer, dto);
+        } else {
+            request.reject(reviewer, dto.reviewComment());
+            return null;
+        }
+    }
+
+    private ApiKeyCreateResponse approveRequest(SnpApiKeyRequest request, SnpUser reviewer,
+                                                ApiKeyRequestReviewDto dto) {
+        String adjustedApisJson = dto.adjustedApiIds() != null && !dto.adjustedApiIds().isEmpty()
+            ? toJson(dto.adjustedApiIds()) : null;
+        LocalDateTime adjFrom = dto.adjustedFromDate() != null
+            ? LocalDate.parse(dto.adjustedFromDate()).atStartOfDay() : null;
+        LocalDateTime adjTo = dto.adjustedToDate() != null
+            ? LocalDate.parse(dto.adjustedToDate()).atStartOfDay() : null;
+        request.approve(reviewer, adjustedApisJson, adjFrom, adjTo);
+
+        // API Key 생성
+        String rawKey = generateRawKey();
+        String prefix = rawKey.substring(0, PREFIX_LENGTH);
+        String encryptedKey = aesEncryptor.encrypt(rawKey);
+
+        SnpApiKey apiKey = SnpApiKey.builder()
+            .user(request.getUser())
+            .apiKey(encryptedKey)
+            .apiKeyPrefix(prefix)
+            .keyName(request.getKeyName())
+            .status(ApiKeyStatus.ACTIVE)
+            .approvedBy(reviewer)
+            .approvedAt(LocalDateTime.now())
+            .expiresAt(request.getUsageToDate())
+            .build();
+
+        SnpApiKey savedKey = snpApiKeyRepository.save(apiKey);
+
+        // 권한 생성
+        List<Long> apiIds = dto.adjustedApiIds() != null && !dto.adjustedApiIds().isEmpty()
+            ? dto.adjustedApiIds()
+            : parseApiIds(request.getRequestedApis());
+
+        createPermissions(savedKey, apiIds, reviewer.getUserId());
+
+        return new ApiKeyCreateResponse(
+            savedKey.getApiKeyId(),
+            savedKey.getKeyName(),
+            rawKey,
+            savedKey.getApiKeyPrefix(),
+            savedKey.getStatus().name()
+        );
+    }
+
+    private void createPermissions(SnpApiKey apiKey, List<Long> apiIds, Long grantedBy) {
+        if (apiIds == null || apiIds.isEmpty()) {
+            return;
+        }
+
+        List<SnpApiPermission> permissions = apiIds.stream()
+            .map(apiId -> snpServiceApiRepository.findById(apiId)
+                .map(serviceApi -> SnpApiPermission.builder()
+                    .apiKey(apiKey)
+                    .api(serviceApi)
+                    .isActive(true)
+                    .grantedBy(grantedBy)
+                    .grantedAt(LocalDateTime.now())
+                    .build())
+                .orElse(null))
+            .filter(perm -> perm != null)
+            .toList();
+
+        snpApiPermissionRepository.saveAll(permissions);
+    }
+
+    private String generateRawKey() {
+        SecureRandom random = new SecureRandom();
+        byte[] bytes = new byte[RAW_KEY_HEX_LENGTH / 2];
+        random.nextBytes(bytes);
+        StringBuilder hex = new StringBuilder(KEY_PREFIX);
+        for (byte b : bytes) {
+            hex.append(String.format("%02x", b));
+        }
+        return hex.toString();
+    }
+
+    private String toJson(List<Long> apiIds) {
+        if (apiIds == null || apiIds.isEmpty()) {
+            return null;
+        }
+        try {
+            return objectMapper.writeValueAsString(apiIds);
+        } catch (JsonProcessingException e) {
+            log.error("API ID 목록 JSON 변환 실패", e);
+            return null;
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private List<Long> parseApiIds(String json) {
+        if (json == null || json.isBlank()) {
+            return List.of();
+        }
+        try {
+            return objectMapper.readValue(json, List.class);
+        } catch (JsonProcessingException e) {
+            log.error("API ID 목록 JSON 파싱 실패", e);
+            return List.of();
+        }
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/apikey/service/ApiKeyService.java b/src/main/java/com/gcsc/connection/apikey/service/ApiKeyService.java
new file mode 100644
index 0000000..e291802
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/apikey/service/ApiKeyService.java
@@ -0,0 +1,129 @@
+package com.gcsc.connection.apikey.service;
+
+import com.gcsc.connection.apikey.dto.ApiKeyCreateResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyDetailResponse;
+import com.gcsc.connection.apikey.dto.ApiKeyResponse;
+import com.gcsc.connection.apikey.dto.CreateApiKeyRequest;
+import com.gcsc.connection.apikey.entity.ApiKeyStatus;
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+import com.gcsc.connection.apikey.repository.SnpApiKeyRepository;
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.common.util.AesEncryptor;
+import com.gcsc.connection.user.entity.SnpUser;
+import com.gcsc.connection.user.repository.SnpUserRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.security.SecureRandom;
+import java.util.List;
+
+/**
+ * API Key 관리 서비스
+ */
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class ApiKeyService {
+
+    private static final int RAW_KEY_HEX_LENGTH = 32;
+    private static final String KEY_PREFIX = "snp_";
+    private static final int PREFIX_LENGTH = 8;
+
+    private final SnpApiKeyRepository snpApiKeyRepository;
+    private final SnpUserRepository snpUserRepository;
+    private final AesEncryptor aesEncryptor;
+
+    /**
+     * 내 API Key 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<ApiKeyResponse> getMyKeys(Long userId) {
+        return snpApiKeyRepository.findByUserUserId(userId).stream()
+            .map(ApiKeyResponse::from)
+            .toList();
+    }
+
+    /**
+     * API Key 상세 조회 (복호화된 키 포함)
+     */
+    @Transactional(readOnly = true)
+    public ApiKeyDetailResponse getKeyDetail(Long keyId) {
+        SnpApiKey apiKey = snpApiKeyRepository.findById(keyId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.API_KEY_NOT_FOUND));
+        String decryptedKey = aesEncryptor.decrypt(apiKey.getApiKey());
+        return ApiKeyDetailResponse.from(apiKey, decryptedKey);
+    }
+
+    /**
+     * API Key 생성
+     */
+    @Transactional
+    public ApiKeyCreateResponse createKey(Long userId, CreateApiKeyRequest request) {
+        SnpUser user = snpUserRepository.findById(userId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+
+        String rawKey = generateRawKey();
+        String prefix = rawKey.substring(0, PREFIX_LENGTH);
+        String encryptedKey = aesEncryptor.encrypt(rawKey);
+
+        SnpApiKey apiKey = SnpApiKey.builder()
+            .user(user)
+            .apiKey(encryptedKey)
+            .apiKeyPrefix(prefix)
+            .keyName(request.keyName())
+            .status(ApiKeyStatus.ACTIVE)
+            .build();
+
+        SnpApiKey saved = snpApiKeyRepository.save(apiKey);
+
+        return new ApiKeyCreateResponse(
+            saved.getApiKeyId(),
+            saved.getKeyName(),
+            rawKey,
+            saved.getApiKeyPrefix(),
+            saved.getStatus().name()
+        );
+    }
+
+    /**
+     * API Key 폐기
+     */
+    @Transactional
+    public void revokeKey(Long keyId) {
+        SnpApiKey apiKey = snpApiKeyRepository.findById(keyId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.API_KEY_NOT_FOUND));
+
+        if (apiKey.getStatus() == ApiKeyStatus.REVOKED) {
+            throw new BusinessException(ErrorCode.API_KEY_ALREADY_REVOKED);
+        }
+
+        apiKey.revoke();
+    }
+
+    /**
+     * 전체 API Key 목록 조회 (관리자용)
+     */
+    @Transactional(readOnly = true)
+    public List<ApiKeyResponse> getAllKeys() {
+        return snpApiKeyRepository.findAll().stream()
+            .map(ApiKeyResponse::from)
+            .toList();
+    }
+
+    /**
+     * 랜덤 API Key 문자열 생성
+     */
+    private String generateRawKey() {
+        SecureRandom random = new SecureRandom();
+        byte[] bytes = new byte[RAW_KEY_HEX_LENGTH / 2];
+        random.nextBytes(bytes);
+        StringBuilder hex = new StringBuilder(KEY_PREFIX);
+        for (byte b : bytes) {
+            hex.append(String.format("%02x", b));
+        }
+        return hex.toString();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/auth/controller/AuthController.java b/src/main/java/com/gcsc/connection/auth/controller/AuthController.java
new file mode 100644
index 0000000..e143f5d
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/controller/AuthController.java
@@ -0,0 +1,54 @@
+package com.gcsc.connection.auth.controller;
+
+import com.gcsc.connection.auth.dto.LoginRequest;
+import com.gcsc.connection.auth.dto.LoginResponse;
+import com.gcsc.connection.auth.dto.TokenRefreshRequest;
+import com.gcsc.connection.auth.dto.TokenRefreshResponse;
+import com.gcsc.connection.auth.service.AuthService;
+import com.gcsc.connection.common.dto.ApiResponse;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * 인증 관련 API (로그인, 로그아웃, 토큰 갱신)
+ */
+@RestController
+@RequestMapping("/api/auth")
+@RequiredArgsConstructor
+public class AuthController {
+
+    private final AuthService authService;
+
+    /**
+     * 로그인 - JWT 토큰 발급
+     */
+    @PostMapping("/login")
+    public ResponseEntity<ApiResponse<LoginResponse>> login(
+            @RequestBody @Valid LoginRequest request) {
+        LoginResponse response = authService.login(request);
+        return ResponseEntity.ok(ApiResponse.ok(response));
+    }
+
+    /**
+     * 로그아웃
+     */
+    @PostMapping("/logout")
+    public ResponseEntity<ApiResponse<Void>> logout() {
+        return ResponseEntity.ok(ApiResponse.ok(null, "로그아웃되었습니다"));
+    }
+
+    /**
+     * 토큰 갱신 - Refresh Token으로 새 Access Token 발급
+     */
+    @PostMapping("/refresh")
+    public ResponseEntity<ApiResponse<TokenRefreshResponse>> refresh(
+            @RequestBody @Valid TokenRefreshRequest request) {
+        TokenRefreshResponse response = authService.refresh(request);
+        return ResponseEntity.ok(ApiResponse.ok(response));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/auth/dto/LoginRequest.java b/src/main/java/com/gcsc/connection/auth/dto/LoginRequest.java
new file mode 100644
index 0000000..d936ad2
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/dto/LoginRequest.java
@@ -0,0 +1,9 @@
+package com.gcsc.connection.auth.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record LoginRequest(
+    @NotBlank String loginId,
+    @NotBlank String password
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/auth/dto/LoginResponse.java b/src/main/java/com/gcsc/connection/auth/dto/LoginResponse.java
new file mode 100644
index 0000000..34ac606
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/dto/LoginResponse.java
@@ -0,0 +1,11 @@
+package com.gcsc.connection.auth.dto;
+
+public record LoginResponse(
+    String accessToken,
+    String refreshToken,
+    String loginId,
+    String userName,
+    String role,
+    long expiresIn
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/auth/dto/TokenRefreshRequest.java b/src/main/java/com/gcsc/connection/auth/dto/TokenRefreshRequest.java
new file mode 100644
index 0000000..af9798e
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/dto/TokenRefreshRequest.java
@@ -0,0 +1,8 @@
+package com.gcsc.connection.auth.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record TokenRefreshRequest(
+    @NotBlank String refreshToken
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/auth/dto/TokenRefreshResponse.java b/src/main/java/com/gcsc/connection/auth/dto/TokenRefreshResponse.java
new file mode 100644
index 0000000..284a8c6
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/dto/TokenRefreshResponse.java
@@ -0,0 +1,7 @@
+package com.gcsc.connection.auth.dto;
+
+public record TokenRefreshResponse(
+    String accessToken,
+    long expiresIn
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/auth/jwt/JwtAuthenticationFilter.java b/src/main/java/com/gcsc/connection/auth/jwt/JwtAuthenticationFilter.java
new file mode 100644
index 0000000..44f7bbb
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/jwt/JwtAuthenticationFilter.java
@@ -0,0 +1,67 @@
+package com.gcsc.connection.auth.jwt;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import org.springframework.util.AntPathMatcher;
+import org.springframework.util.StringUtils;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import java.io.IOException;
+import java.util.List;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class JwtAuthenticationFilter extends OncePerRequestFilter {
+
+    private static final String AUTHORIZATION_HEADER = "Authorization";
+    private static final String BEARER_PREFIX = "Bearer ";
+
+    private final JwtTokenProvider jwtTokenProvider;
+    private final AntPathMatcher pathMatcher = new AntPathMatcher();
+
+    @Override
+    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
+                                    FilterChain filterChain) throws ServletException, IOException {
+        String token = resolveToken(request);
+
+        if (StringUtils.hasText(token) && jwtTokenProvider.validateToken(token)) {
+            Long userId = jwtTokenProvider.getUserId(token);
+            String loginId = jwtTokenProvider.getLoginId(token);
+            String role = jwtTokenProvider.parseClaims(token).get("role", String.class);
+
+            List<SimpleGrantedAuthority> authorities =
+                List.of(new SimpleGrantedAuthority("ROLE_" + role));
+
+            UsernamePasswordAuthenticationToken authentication =
+                new UsernamePasswordAuthenticationToken(userId, loginId, authorities);
+
+            SecurityContextHolder.getContext().setAuthentication(authentication);
+        }
+
+        filterChain.doFilter(request, response);
+    }
+
+    @Override
+    protected boolean shouldNotFilter(HttpServletRequest request) {
+        String path = request.getServletPath();
+        // /api/ 경로가 아니거나 /api/auth/** 경로인 경우 필터 건너뜀
+        return !path.startsWith("/api/") || pathMatcher.match("/api/auth/**", path);
+    }
+
+    private String resolveToken(HttpServletRequest request) {
+        String bearerToken = request.getHeader(AUTHORIZATION_HEADER);
+        if (StringUtils.hasText(bearerToken) && bearerToken.startsWith(BEARER_PREFIX)) {
+            return bearerToken.substring(BEARER_PREFIX.length());
+        }
+        return null;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/auth/jwt/JwtTokenProvider.java b/src/main/java/com/gcsc/connection/auth/jwt/JwtTokenProvider.java
new file mode 100644
index 0000000..6ac24a8
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/jwt/JwtTokenProvider.java
@@ -0,0 +1,107 @@
+package com.gcsc.connection.auth.jwt;
+
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.ExpiredJwtException;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.security.Keys;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import javax.crypto.SecretKey;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+
+@Slf4j
+@Component
+public class JwtTokenProvider {
+
+    private final SecretKey secretKey;
+    private final long accessTokenExpiration;
+    private final long refreshTokenExpiration;
+
+    public JwtTokenProvider(
+            @Value("${app.jwt.secret}") String secret,
+            @Value("${app.jwt.access-token-expiration}") long accessTokenExpiration,
+            @Value("${app.jwt.refresh-token-expiration}") long refreshTokenExpiration) {
+        this.secretKey = Keys.hmacShaKeyFor(secret.getBytes(StandardCharsets.UTF_8));
+        this.accessTokenExpiration = accessTokenExpiration;
+        this.refreshTokenExpiration = refreshTokenExpiration;
+    }
+
+    /**
+     * Access Token 생성
+     */
+    public String generateAccessToken(Long userId, String loginId, String role) {
+        Date now = new Date();
+        Date expiry = new Date(now.getTime() + accessTokenExpiration);
+
+        return Jwts.builder()
+            .subject(String.valueOf(userId))
+            .claim("loginId", loginId)
+            .claim("role", role)
+            .issuedAt(now)
+            .expiration(expiry)
+            .signWith(secretKey)
+            .compact();
+    }
+
+    /**
+     * Refresh Token 생성
+     */
+    public String generateRefreshToken(Long userId) {
+        Date now = new Date();
+        Date expiry = new Date(now.getTime() + refreshTokenExpiration);
+
+        return Jwts.builder()
+            .subject(String.valueOf(userId))
+            .issuedAt(now)
+            .expiration(expiry)
+            .signWith(secretKey)
+            .compact();
+    }
+
+    /**
+     * 토큰에서 Claims 파싱
+     */
+    public Claims parseClaims(String token) {
+        return Jwts.parser()
+            .verifyWith(secretKey)
+            .build()
+            .parseSignedClaims(token)
+            .getPayload();
+    }
+
+    /**
+     * 토큰 유효성 검증
+     */
+    public boolean validateToken(String token) {
+        try {
+            parseClaims(token);
+            return true;
+        } catch (ExpiredJwtException e) {
+            log.warn("만료된 JWT 토큰입니다");
+        } catch (Exception e) {
+            log.warn("유효하지 않은 JWT 토큰입니다: {}", e.getMessage());
+        }
+        return false;
+    }
+
+    /**
+     * 토큰에서 사용자 ID 추출
+     */
+    public Long getUserId(String token) {
+        return Long.parseLong(parseClaims(token).getSubject());
+    }
+
+    /**
+     * 토큰에서 로그인 ID 추출
+     */
+    public String getLoginId(String token) {
+        return parseClaims(token).get("loginId", String.class);
+    }
+
+    public long getAccessTokenExpiration() {
+        return accessTokenExpiration;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/auth/service/AuthService.java b/src/main/java/com/gcsc/connection/auth/service/AuthService.java
new file mode 100644
index 0000000..72cdaa8
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/auth/service/AuthService.java
@@ -0,0 +1,83 @@
+package com.gcsc.connection.auth.service;
+
+import com.gcsc.connection.auth.dto.LoginRequest;
+import com.gcsc.connection.auth.dto.LoginResponse;
+import com.gcsc.connection.auth.dto.TokenRefreshRequest;
+import com.gcsc.connection.auth.dto.TokenRefreshResponse;
+import com.gcsc.connection.auth.jwt.JwtTokenProvider;
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.user.entity.SnpUser;
+import com.gcsc.connection.user.repository.SnpUserRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class AuthService {
+
+    private final SnpUserRepository userRepository;
+    private final JwtTokenProvider jwtTokenProvider;
+    private final PasswordEncoder passwordEncoder;
+
+    /**
+     * 로그인 처리: 사용자 인증 후 JWT 토큰 발급
+     */
+    @Transactional
+    public LoginResponse login(LoginRequest request) {
+        SnpUser user = userRepository.findByLoginId(request.loginId())
+            .orElseThrow(() -> new BusinessException(ErrorCode.INVALID_CREDENTIALS));
+
+        if (!Boolean.TRUE.equals(user.getIsActive())) {
+            throw new BusinessException(ErrorCode.USER_DISABLED);
+        }
+
+        if (!passwordEncoder.matches(request.password(), user.getPasswordHash())) {
+            throw new BusinessException(ErrorCode.INVALID_CREDENTIALS);
+        }
+
+        String accessToken = jwtTokenProvider.generateAccessToken(
+            user.getUserId(), user.getLoginId(), user.getRole().name());
+        String refreshToken = jwtTokenProvider.generateRefreshToken(user.getUserId());
+
+        user.updateLastLoginAt();
+
+        log.info("사용자 로그인 성공: {}", user.getLoginId());
+
+        return new LoginResponse(
+            accessToken,
+            refreshToken,
+            user.getLoginId(),
+            user.getUserName(),
+            user.getRole().name(),
+            jwtTokenProvider.getAccessTokenExpiration()
+        );
+    }
+
+    /**
+     * 토큰 갱신: Refresh Token으로 새 Access Token 발급
+     */
+    @Transactional(readOnly = true)
+    public TokenRefreshResponse refresh(TokenRefreshRequest request) {
+        if (!jwtTokenProvider.validateToken(request.refreshToken())) {
+            throw new BusinessException(ErrorCode.TOKEN_INVALID);
+        }
+
+        Long userId = jwtTokenProvider.getUserId(request.refreshToken());
+        SnpUser user = userRepository.findById(userId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+
+        if (!Boolean.TRUE.equals(user.getIsActive())) {
+            throw new BusinessException(ErrorCode.USER_DISABLED);
+        }
+
+        String accessToken = jwtTokenProvider.generateAccessToken(
+            user.getUserId(), user.getLoginId(), user.getRole().name());
+
+        return new TokenRefreshResponse(accessToken, jwtTokenProvider.getAccessTokenExpiration());
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/common/dto/PageResponse.java b/src/main/java/com/gcsc/connection/common/dto/PageResponse.java
new file mode 100644
index 0000000..fda8b4b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/common/dto/PageResponse.java
@@ -0,0 +1,24 @@
+package com.gcsc.connection.common.dto;
+
+import org.springframework.data.domain.Page;
+
+import java.util.List;
+
+public record PageResponse<T>(
+    List<T> content,
+    int page,
+    int size,
+    long totalElements,
+    int totalPages
+) {
+
+    public static <T> PageResponse<T> from(Page<T> page) {
+        return new PageResponse<>(
+            page.getContent(),
+            page.getNumber(),
+            page.getSize(),
+            page.getTotalElements(),
+            page.getTotalPages()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/common/entity/BaseEntity.java b/src/main/java/com/gcsc/connection/common/entity/BaseEntity.java
new file mode 100644
index 0000000..576faca
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/common/entity/BaseEntity.java
@@ -0,0 +1,33 @@
+package com.gcsc.connection.common.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.MappedSuperclass;
+import jakarta.persistence.PrePersist;
+import jakarta.persistence.PreUpdate;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@MappedSuperclass
+public abstract class BaseEntity {
+
+    @Column(name = "created_at", updatable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+
+    @PrePersist
+    protected void onCreate() {
+        this.createdAt = LocalDateTime.now();
+        this.updatedAt = LocalDateTime.now();
+    }
+
+    @PreUpdate
+    protected void onUpdate() {
+        this.updatedAt = LocalDateTime.now();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/common/exception/BusinessException.java b/src/main/java/com/gcsc/connection/common/exception/BusinessException.java
new file mode 100644
index 0000000..4d1633a
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/common/exception/BusinessException.java
@@ -0,0 +1,14 @@
+package com.gcsc.connection.common.exception;
+
+import lombok.Getter;
+
+@Getter
+public class BusinessException extends RuntimeException {
+
+    private final ErrorCode errorCode;
+
+    public BusinessException(ErrorCode errorCode) {
+        super(errorCode.getMessage());
+        this.errorCode = errorCode;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/common/exception/ErrorCode.java b/src/main/java/com/gcsc/connection/common/exception/ErrorCode.java
new file mode 100644
index 0000000..31496a5
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/common/exception/ErrorCode.java
@@ -0,0 +1,39 @@
+package com.gcsc.connection.common.exception;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum ErrorCode {
+
+    INVALID_CREDENTIALS(401, "AUTH001", "아이디 또는 비밀번호가 올바르지 않습니다"),
+    TOKEN_EXPIRED(401, "AUTH002", "토큰이 만료되었습니다"),
+    TOKEN_INVALID(401, "AUTH003", "유효하지 않은 토큰입니다"),
+    ACCESS_DENIED(403, "AUTH004", "접근 권한이 없습니다"),
+    USER_NOT_FOUND(404, "USER001", "사용자를 찾을 수 없습니다"),
+    USER_DISABLED(403, "USER002", "비활성화된 사용자입니다"),
+    USER_LOGIN_ID_DUPLICATE(409, "USER003", "이미 존재하는 로그인 ID입니다"),
+    TENANT_NOT_FOUND(404, "TENANT001", "테넌트를 찾을 수 없습니다"),
+    TENANT_CODE_DUPLICATE(409, "TENANT002", "이미 존재하는 테넌트 코드입니다"),
+    SERVICE_NOT_FOUND(404, "SVC001", "서비스를 찾을 수 없습니다"),
+    SERVICE_CODE_DUPLICATE(409, "SVC002", "이미 존재하는 서비스 코드입니다"),
+    SERVICE_API_NOT_FOUND(404, "SVC003", "서비스 API를 찾을 수 없습니다"),
+    HEALTH_CHECK_FAILED(500, "HC001", "헬스체크 실행에 실패했습니다"),
+    API_KEY_NOT_FOUND(404, "KEY001", "API Key를 찾을 수 없습니다"),
+    API_KEY_ALREADY_REVOKED(409, "KEY002", "이미 폐기된 API Key입니다"),
+    API_KEY_REQUEST_NOT_FOUND(404, "KEY003", "API Key 신청을 찾을 수 없습니다"),
+    API_KEY_REQUEST_ALREADY_PROCESSED(409, "KEY004", "이미 처리된 신청입니다"),
+    ENCRYPTION_ERROR(500, "KEY005", "암호화 처리 중 오류가 발생했습니다"),
+    GATEWAY_API_KEY_MISSING(401, "GW001", "API Key가 필요합니다"),
+    GATEWAY_API_KEY_INVALID(401, "GW002", "유효하지 않은 API Key입니다"),
+    GATEWAY_API_KEY_EXPIRED(403, "GW003", "만료된 API Key입니다"),
+    GATEWAY_SERVICE_INACTIVE(503, "GW004", "비활성 서비스입니다"),
+    GATEWAY_PERMISSION_DENIED(403, "GW005", "해당 API에 대한 권한이 없습니다"),
+    GATEWAY_PROXY_FAILED(502, "GW006", "서비스 요청에 실패했습니다"),
+    INTERNAL_ERROR(500, "SYS001", "시스템 오류가 발생했습니다");
+
+    private final int status;
+    private final String code;
+    private final String message;
+}
diff --git a/src/main/java/com/gcsc/connection/common/exception/GlobalExceptionHandler.java b/src/main/java/com/gcsc/connection/common/exception/GlobalExceptionHandler.java
index ab87f26..9581297 100644
--- a/src/main/java/com/gcsc/connection/common/exception/GlobalExceptionHandler.java
+++ b/src/main/java/com/gcsc/connection/common/exception/GlobalExceptionHandler.java
@@ -4,13 +4,57 @@ import com.gcsc.connection.common.dto.ApiResponse;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 
+import java.util.stream.Collectors;
+
 @Slf4j
 @RestControllerAdvice
 public class GlobalExceptionHandler {
 
+    /**
+     * 비즈니스 예외 처리
+     */
+    @ExceptionHandler(BusinessException.class)
+    public ResponseEntity<ApiResponse<Void>> handleBusinessException(BusinessException e) {
+        ErrorCode errorCode = e.getErrorCode();
+        log.warn("Business exception: {} - {}", errorCode.getCode(), errorCode.getMessage());
+        return ResponseEntity
+            .status(errorCode.getStatus())
+            .body(ApiResponse.error(errorCode.getMessage()));
+    }
+
+    /**
+     * 요청 파라미터 유효성 검증 실패 처리
+     */
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<ApiResponse<Void>> handleValidationException(
+            MethodArgumentNotValidException e) {
+        String message = e.getBindingResult().getFieldErrors().stream()
+            .map(error -> error.getField() + ": " + error.getDefaultMessage())
+            .collect(Collectors.joining(", "));
+        log.warn("Validation failed: {}", message);
+        return ResponseEntity
+            .status(HttpStatus.BAD_REQUEST)
+            .body(ApiResponse.error(message));
+    }
+
+    /**
+     * 접근 권한 없음 예외 처리
+     */
+    @ExceptionHandler(AccessDeniedException.class)
+    public ResponseEntity<ApiResponse<Void>> handleAccessDenied(AccessDeniedException e) {
+        log.warn("Access denied: {}", e.getMessage());
+        return ResponseEntity.status(HttpStatus.FORBIDDEN)
+            .body(ApiResponse.error("접근 권한이 없습니다"));
+    }
+
+    /**
+     * 처리되지 않은 예외 처리
+     */
     @ExceptionHandler(Exception.class)
     public ResponseEntity<ApiResponse<Void>> handleException(Exception e) {
         log.error("Unhandled exception: {}", e.getMessage(), e);
diff --git a/src/main/java/com/gcsc/connection/common/util/AesEncryptor.java b/src/main/java/com/gcsc/connection/common/util/AesEncryptor.java
new file mode 100644
index 0000000..9ecbb2e
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/common/util/AesEncryptor.java
@@ -0,0 +1,79 @@
+package com.gcsc.connection.common.util;
+
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.GCMParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import java.security.SecureRandom;
+import java.util.Base64;
+
+@Slf4j
+@Component
+public class AesEncryptor {
+
+    private static final String ALGORITHM = "AES/GCM/NoPadding";
+    private static final int GCM_TAG_LENGTH = 128;
+    private static final int IV_LENGTH = 12;
+
+    private final SecretKeySpec secretKeySpec;
+
+    public AesEncryptor(@Value("${app.apikey.aes-secret-key}") String base64Key) {
+        byte[] keyBytes = Base64.getDecoder().decode(base64Key);
+        this.secretKeySpec = new SecretKeySpec(keyBytes, "AES");
+    }
+
+    /**
+     * 평문을 AES-256-GCM으로 암호화하여 Base64 인코딩된 문자열 반환
+     */
+    public String encrypt(String plainText) {
+        try {
+            byte[] iv = new byte[IV_LENGTH];
+            new SecureRandom().nextBytes(iv);
+
+            Cipher cipher = Cipher.getInstance(ALGORITHM);
+            GCMParameterSpec gcmSpec = new GCMParameterSpec(GCM_TAG_LENGTH, iv);
+            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, gcmSpec);
+
+            byte[] cipherText = cipher.doFinal(plainText.getBytes());
+
+            byte[] combined = new byte[IV_LENGTH + cipherText.length];
+            System.arraycopy(iv, 0, combined, 0, IV_LENGTH);
+            System.arraycopy(cipherText, 0, combined, IV_LENGTH, cipherText.length);
+
+            return Base64.getEncoder().encodeToString(combined);
+        } catch (Exception e) {
+            log.error("암호화 처리 중 오류 발생", e);
+            throw new BusinessException(ErrorCode.ENCRYPTION_ERROR);
+        }
+    }
+
+    /**
+     * Base64 인코딩된 암호문을 복호화하여 평문 반환
+     */
+    public String decrypt(String encryptedText) {
+        try {
+            byte[] combined = Base64.getDecoder().decode(encryptedText);
+
+            byte[] iv = new byte[IV_LENGTH];
+            System.arraycopy(combined, 0, iv, 0, IV_LENGTH);
+
+            byte[] cipherText = new byte[combined.length - IV_LENGTH];
+            System.arraycopy(combined, IV_LENGTH, cipherText, 0, cipherText.length);
+
+            Cipher cipher = Cipher.getInstance(ALGORITHM);
+            GCMParameterSpec gcmSpec = new GCMParameterSpec(GCM_TAG_LENGTH, iv);
+            cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, gcmSpec);
+
+            byte[] plainText = cipher.doFinal(cipherText);
+            return new String(plainText);
+        } catch (Exception e) {
+            log.error("복호화 처리 중 오류 발생", e);
+            throw new BusinessException(ErrorCode.ENCRYPTION_ERROR);
+        }
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/config/AsyncConfig.java b/src/main/java/com/gcsc/connection/config/AsyncConfig.java
new file mode 100644
index 0000000..ca567a6
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/config/AsyncConfig.java
@@ -0,0 +1,24 @@
+package com.gcsc.connection.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.annotation.EnableAsync;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+
+import java.util.concurrent.Executor;
+
+@Configuration
+@EnableAsync
+public class AsyncConfig {
+
+    @Bean("taskExecutor")
+    public Executor taskExecutor() {
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        executor.setCorePoolSize(5);
+        executor.setMaxPoolSize(10);
+        executor.setQueueCapacity(100);
+        executor.setThreadNamePrefix("async-log-");
+        executor.initialize();
+        return executor;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/config/SecurityConfig.java b/src/main/java/com/gcsc/connection/config/SecurityConfig.java
index 44f84ed..dcc4423 100644
--- a/src/main/java/com/gcsc/connection/config/SecurityConfig.java
+++ b/src/main/java/com/gcsc/connection/config/SecurityConfig.java
@@ -1,25 +1,50 @@
 package com.gcsc.connection.config;
 
+import com.gcsc.connection.auth.jwt.JwtAuthenticationFilter;
+import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
 import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer;
+import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 
 @Configuration
 @EnableWebSecurity
+@EnableMethodSecurity
+@RequiredArgsConstructor
 public class SecurityConfig {
 
+    private final JwtAuthenticationFilter jwtAuthenticationFilter;
+
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+
     @Bean
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http
             .csrf(AbstractHttpConfigurer::disable)
             .headers(headers -> headers
                 .frameOptions(HeadersConfigurer.FrameOptionsConfig::sameOrigin))
+            .sessionManagement(session -> session
+                .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
             .authorizeHttpRequests(auth -> auth
-                .anyRequest().permitAll());
+                .requestMatchers("/api/auth/**").permitAll()
+                .requestMatchers("/swagger-ui/**", "/v3/api-docs/**").permitAll()
+                .requestMatchers("/actuator/**").permitAll()
+                .requestMatchers("/", "/*.html", "/assets/**", "/favicon*", "/site.webmanifest").permitAll()
+                .requestMatchers("/gateway/**").permitAll()
+                .requestMatchers("/api/**").authenticated()
+                .anyRequest().permitAll())
+            .addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);
 
         return http.build();
     }
diff --git a/src/main/java/com/gcsc/connection/config/WebClientConfig.java b/src/main/java/com/gcsc/connection/config/WebClientConfig.java
new file mode 100644
index 0000000..6d2a3e4
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/config/WebClientConfig.java
@@ -0,0 +1,26 @@
+package com.gcsc.connection.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.reactive.ReactorClientHttpConnector;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.netty.http.client.HttpClient;
+
+import java.time.Duration;
+
+@Configuration
+public class WebClientConfig {
+
+    @Value("${app.heartbeat.timeout-seconds}")
+    private int timeoutSeconds;
+
+    @Bean
+    public WebClient webClient() {
+        HttpClient httpClient = HttpClient.create()
+            .responseTimeout(Duration.ofSeconds(timeoutSeconds));
+        return WebClient.builder()
+            .clientConnector(new ReactorClientHttpConnector(httpClient))
+            .build();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/gateway/controller/GatewayController.java b/src/main/java/com/gcsc/connection/gateway/controller/GatewayController.java
new file mode 100644
index 0000000..3f03b7b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/gateway/controller/GatewayController.java
@@ -0,0 +1,83 @@
+package com.gcsc.connection.gateway.controller;
+
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.gateway.service.GatewayService;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * API Gateway 프록시 엔드포인트
+ */
+@RestController
+@RequestMapping("/gateway")
+@RequiredArgsConstructor
+@Slf4j
+public class GatewayController {
+
+    private final GatewayService gatewayService;
+
+    /**
+     * 모든 HTTP 메서드에 대한 프록시 요청 처리
+     */
+    @RequestMapping(
+        value = "/{serviceCode}/**",
+        method = {RequestMethod.GET, RequestMethod.POST, RequestMethod.PUT,
+                  RequestMethod.DELETE, RequestMethod.PATCH}
+    )
+    public ResponseEntity<byte[]> proxy(@PathVariable String serviceCode,
+                                        HttpServletRequest request) {
+        try {
+            String remainingPath = extractRemainingPath(serviceCode, request);
+            return gatewayService.proxyRequest(serviceCode, remainingPath, request);
+        } catch (BusinessException e) {
+            return buildErrorResponse(e.getErrorCode().getStatus(), e.getErrorCode().getMessage());
+        }
+    }
+
+    /**
+     * /gateway/{serviceCode}/ 이후의 경로 추출
+     */
+    private String extractRemainingPath(String serviceCode, HttpServletRequest request) {
+        String fullPath = request.getRequestURI();
+        String contextPath = request.getContextPath();
+        String prefix = contextPath + "/gateway/" + serviceCode;
+        String remainingPath = fullPath.substring(prefix.length());
+
+        if (remainingPath.isEmpty()) {
+            remainingPath = "/";
+        }
+
+        return remainingPath;
+    }
+
+    /**
+     * Gateway 소비자용 JSON 에러 응답 생성
+     */
+    private ResponseEntity<byte[]> buildErrorResponse(int status, String message) {
+        String json = "{\"success\":false,\"message\":\"" + escapeJson(message) + "\"}";
+        return ResponseEntity.status(status)
+            .contentType(MediaType.APPLICATION_JSON)
+            .body(json.getBytes());
+    }
+
+    /**
+     * JSON 문자열 이스케이프 처리
+     */
+    private String escapeJson(String value) {
+        if (value == null) {
+            return "";
+        }
+        return value.replace("\\", "\\\\")
+            .replace("\"", "\\\"")
+            .replace("\n", "\\n")
+            .replace("\r", "\\r")
+            .replace("\t", "\\t");
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/gateway/service/GatewayService.java b/src/main/java/com/gcsc/connection/gateway/service/GatewayService.java
new file mode 100644
index 0000000..ba38755
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/gateway/service/GatewayService.java
@@ -0,0 +1,309 @@
+package com.gcsc.connection.gateway.service;
+
+import com.gcsc.connection.apikey.entity.ApiKeyStatus;
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+import com.gcsc.connection.apikey.repository.SnpApiKeyRepository;
+import com.gcsc.connection.apikey.repository.SnpApiPermissionRepository;
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.common.util.AesEncryptor;
+import com.gcsc.connection.monitoring.entity.SnpApiRequestLog;
+import com.gcsc.connection.monitoring.service.RequestLogService;
+import com.gcsc.connection.service.entity.SnpService;
+import com.gcsc.connection.service.entity.SnpServiceApi;
+import com.gcsc.connection.service.repository.SnpServiceApiRepository;
+import com.gcsc.connection.service.repository.SnpServiceRepository;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.web.reactive.function.client.WebClient;
+import org.springframework.web.reactive.function.client.WebClientResponseException;
+
+import java.time.LocalDateTime;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.Set;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class GatewayService {
+
+    private static final int API_KEY_PREFIX_LENGTH = 8;
+    private static final Set<String> EXCLUDED_HEADERS = Set.of(
+        "host", "x-api-key", "connection", "content-length"
+    );
+
+    private final SnpApiKeyRepository snpApiKeyRepository;
+    private final SnpApiPermissionRepository snpApiPermissionRepository;
+    private final SnpServiceRepository snpServiceRepository;
+    private final SnpServiceApiRepository snpServiceApiRepository;
+    private final AesEncryptor aesEncryptor;
+    private final WebClient webClient;
+    private final RequestLogService requestLogService;
+
+    /**
+     * API Gateway 프록시 요청 처리
+     */
+    public ResponseEntity<byte[]> proxyRequest(String serviceCode, String remainingPath,
+                                                HttpServletRequest request) {
+        LocalDateTime requestedAt = LocalDateTime.now();
+        long startTime = System.currentTimeMillis();
+        SnpApiKey apiKey = null;
+        SnpService service = null;
+        String gatewayPath = "/gateway/" + serviceCode + remainingPath
+            + (request.getQueryString() != null ? "?" + request.getQueryString() : "");
+        String targetUrl = null;
+
+        try {
+            // 1. 서비스 조회 (모든 로그에 service_id 기록을 위해 최우선 수행)
+            service = snpServiceRepository.findByServiceCode(serviceCode)
+                .orElseThrow(() -> new BusinessException(ErrorCode.SERVICE_NOT_FOUND));
+
+            if (!Boolean.TRUE.equals(service.getIsActive())) {
+                throw new BusinessException(ErrorCode.GATEWAY_SERVICE_INACTIVE);
+            }
+
+            // 2. 대상 URL 조합 (실패 로그에도 사용)
+            targetUrl = buildTargetUrl(service.getServiceUrl(), remainingPath, request);
+
+            // 3. API Key 추출
+            String rawKey = request.getHeader("X-API-KEY");
+            if (rawKey == null || rawKey.isBlank()) {
+                throw new BusinessException(ErrorCode.GATEWAY_API_KEY_MISSING);
+            }
+
+            // 4. API Key 검증 (prefix 매칭 후 복호화 비교)
+            apiKey = findApiKeyByRawKey(rawKey);
+
+            // 5. Key 상태/만료 검증
+            validateApiKey(apiKey);
+
+            // 6. ServiceApi 조회 (경로 + 메서드 매칭)
+            String apiPath = remainingPath.startsWith("/") ? remainingPath : "/" + remainingPath;
+            SnpServiceApi serviceApi = snpServiceApiRepository
+                .findByServiceServiceIdAndApiPathAndApiMethod(
+                    service.getServiceId(), apiPath, request.getMethod())
+                .orElseThrow(() -> new BusinessException(ErrorCode.GATEWAY_PERMISSION_DENIED));
+
+            // 6. 권한 확인
+            snpApiPermissionRepository
+                .findByApiKeyApiKeyIdAndApiApiIdAndIsActiveTrue(apiKey.getApiKeyId(), serviceApi.getApiId())
+                .orElseThrow(() -> new BusinessException(ErrorCode.GATEWAY_PERMISSION_DENIED));
+
+            // 7. 프록시 요청 전송
+            ResponseEntity<byte[]> response = forwardRequest(targetUrl, request);
+
+            // 9. 마지막 사용 시간 갱신
+            apiKey.updateLastUsedAt();
+            snpApiKeyRepository.save(apiKey);
+
+            // 10. 성공 로그 저장
+            int responseTime = (int) (System.currentTimeMillis() - startTime);
+            saveLog(request, service, apiKey, targetUrl, gatewayPath, "SUCCESS",
+                response.getStatusCode().value(), responseTime,
+                response.getBody() != null ? (long) response.getBody().length : 0L,
+                null, requestedAt);
+
+            return response;
+
+        } catch (BusinessException e) {
+            int responseTime = (int) (System.currentTimeMillis() - startTime);
+            saveLog(request, service, apiKey, targetUrl, gatewayPath, "FAIL",
+                e.getErrorCode().getStatus(), responseTime, 0L,
+                e.getErrorCode().getMessage(), requestedAt);
+            throw e;
+
+        } catch (Exception e) {
+            int responseTime = (int) (System.currentTimeMillis() - startTime);
+            log.error("Gateway 프록시 요청 실패: {}", e.getMessage(), e);
+            saveLog(request, service, apiKey, targetUrl, gatewayPath, "ERROR",
+                502, responseTime, 0L, e.getMessage(), requestedAt);
+            throw new BusinessException(ErrorCode.GATEWAY_PROXY_FAILED);
+        }
+    }
+
+    /**
+     * prefix 매칭 후 복호화하여 API Key 찾기
+     */
+    private SnpApiKey findApiKeyByRawKey(String rawKey) {
+        if (rawKey.length() < API_KEY_PREFIX_LENGTH) {
+            throw new BusinessException(ErrorCode.GATEWAY_API_KEY_INVALID);
+        }
+
+        String prefix = rawKey.substring(0, API_KEY_PREFIX_LENGTH);
+        List<SnpApiKey> candidates = snpApiKeyRepository.findByApiKeyPrefix(prefix);
+
+        for (SnpApiKey candidate : candidates) {
+            try {
+                String decryptedKey = aesEncryptor.decrypt(candidate.getApiKey());
+                if (rawKey.equals(decryptedKey)) {
+                    return candidate;
+                }
+            } catch (Exception e) {
+                log.debug("API Key 복호화 비교 실패 (apiKeyId={})", candidate.getApiKeyId());
+            }
+        }
+
+        throw new BusinessException(ErrorCode.GATEWAY_API_KEY_INVALID);
+    }
+
+    /**
+     * API Key 상태 및 만료 검증
+     */
+    private void validateApiKey(SnpApiKey apiKey) {
+        if (apiKey.getStatus() != ApiKeyStatus.ACTIVE) {
+            throw new BusinessException(ErrorCode.GATEWAY_API_KEY_INVALID);
+        }
+
+        if (apiKey.getExpiresAt() != null && apiKey.getExpiresAt().isBefore(LocalDateTime.now())) {
+            throw new BusinessException(ErrorCode.GATEWAY_API_KEY_EXPIRED);
+        }
+    }
+
+    /**
+     * 대상 URL 구성
+     */
+    private String buildTargetUrl(String serviceUrl, String remainingPath, HttpServletRequest request) {
+        StringBuilder url = new StringBuilder(serviceUrl);
+        if (!remainingPath.isEmpty() && !"/".equals(remainingPath)) {
+            if (!serviceUrl.endsWith("/") && !remainingPath.startsWith("/")) {
+                url.append("/");
+            }
+            url.append(remainingPath);
+        }
+
+        String queryString = request.getQueryString();
+        if (queryString != null && !queryString.isEmpty()) {
+            url.append("?").append(queryString);
+        }
+
+        return url.toString();
+    }
+
+    /**
+     * WebClient를 통한 프록시 요청 전송
+     */
+    private ResponseEntity<byte[]> forwardRequest(String targetUrl, HttpServletRequest request) {
+        HttpMethod method = HttpMethod.valueOf(request.getMethod());
+
+        WebClient.RequestBodySpec requestSpec = webClient.method(method)
+            .uri(targetUrl)
+            .headers(headers -> copyHeaders(request, headers));
+
+        WebClient.RequestHeadersSpec<?> headersSpec;
+        if (hasRequestBody(method)) {
+            headersSpec = requestSpec.bodyValue(readRequestBody(request));
+        } else {
+            headersSpec = requestSpec;
+        }
+
+        try {
+            return headersSpec.retrieve()
+                .toEntity(byte[].class)
+                .block();
+        } catch (WebClientResponseException e) {
+            // 대상 서버에서 에러 응답이 와도 그대로 전달
+            return ResponseEntity
+                .status(e.getStatusCode())
+                .headers(e.getHeaders())
+                .body(e.getResponseBodyAsByteArray());
+        }
+    }
+
+    /**
+     * 요청 헤더 복사 (제외 대상 헤더 필터링)
+     */
+    private void copyHeaders(HttpServletRequest request, HttpHeaders headers) {
+        Enumeration<String> headerNames = request.getHeaderNames();
+        while (headerNames.hasMoreElements()) {
+            String headerName = headerNames.nextElement();
+            if (!EXCLUDED_HEADERS.contains(headerName.toLowerCase())) {
+                headers.set(headerName, request.getHeader(headerName));
+            }
+        }
+    }
+
+    /**
+     * POST/PUT/PATCH 메서드 여부 확인
+     */
+    private boolean hasRequestBody(HttpMethod method) {
+        return HttpMethod.POST.equals(method)
+            || HttpMethod.PUT.equals(method)
+            || HttpMethod.PATCH.equals(method);
+    }
+
+    /**
+     * 요청 본문 읽기
+     */
+    private byte[] readRequestBody(HttpServletRequest request) {
+        try {
+            return request.getInputStream().readAllBytes();
+        } catch (Exception e) {
+            log.warn("요청 본문 읽기 실패", e);
+            return new byte[0];
+        }
+    }
+
+    /**
+     * 비동기 요청 로그 저장
+     */
+    private void saveLog(HttpServletRequest request, SnpService service, SnpApiKey apiKey,
+                         String targetUrl, String gatewayPath, String status, Integer responseStatus,
+                         Integer responseTime, Long responseSize, String errorMessage,
+                         LocalDateTime requestedAt) {
+        try {
+            SnpApiRequestLog logEntry = SnpApiRequestLog.builder()
+                .requestUrl(gatewayPath)
+                .requestMethod(request.getMethod())
+                .requestStatus(status)
+                .requestIp(getClientIp(request))
+                .requestHeaders(extractHeaders(request))
+                .requestParams(request.getQueryString())
+                .service(service)
+                .user(apiKey != null ? apiKey.getUser() : null)
+                .apiKey(apiKey)
+                .tenant(apiKey != null && apiKey.getUser() != null ? apiKey.getUser().getTenant() : null)
+                .responseStatus(responseStatus)
+                .responseTime(responseTime)
+                .responseSize(responseSize)
+                .errorMessage(errorMessage)
+                .requestedAt(requestedAt)
+                .build();
+
+            requestLogService.saveLogAsync(logEntry);
+        } catch (Exception e) {
+            log.error("로그 엔트리 생성 실패", e);
+        }
+    }
+
+    /**
+     * 클라이언트 IP 추출
+     */
+    private String getClientIp(HttpServletRequest request) {
+        String xForwardedFor = request.getHeader("X-Forwarded-For");
+        if (xForwardedFor != null && !xForwardedFor.isBlank()) {
+            return xForwardedFor.split(",")[0].trim();
+        }
+        return request.getRemoteAddr();
+    }
+
+    /**
+     * 요청 헤더를 문자열로 변환
+     */
+    private String extractHeaders(HttpServletRequest request) {
+        StringBuilder sb = new StringBuilder();
+        Enumeration<String> headerNames = request.getHeaderNames();
+        while (headerNames.hasMoreElements()) {
+            String name = headerNames.nextElement();
+            if (!"x-api-key".equalsIgnoreCase(name)) {
+                sb.append(name).append(": ").append(request.getHeader(name)).append("\n");
+            }
+        }
+        return sb.toString();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/controller/DashboardController.java b/src/main/java/com/gcsc/connection/monitoring/controller/DashboardController.java
new file mode 100644
index 0000000..0ce52e2
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/controller/DashboardController.java
@@ -0,0 +1,115 @@
+package com.gcsc.connection.monitoring.controller;
+
+import com.gcsc.connection.common.dto.ApiResponse;
+import com.gcsc.connection.monitoring.dto.DashboardStatsResponse;
+import com.gcsc.connection.monitoring.dto.ErrorTrendResponse;
+import com.gcsc.connection.monitoring.dto.HeartbeatStatusResponse;
+import com.gcsc.connection.monitoring.dto.HourlyTrendResponse;
+import com.gcsc.connection.monitoring.dto.RequestLogResponse;
+import com.gcsc.connection.monitoring.dto.ServiceRatioResponse;
+import com.gcsc.connection.monitoring.dto.TenantRatioResponse;
+import com.gcsc.connection.monitoring.dto.TopApiResponse;
+import com.gcsc.connection.monitoring.service.DashboardService;
+import com.gcsc.connection.monitoring.service.HeartbeatService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 대시보드 API - 모니터링 요약/통계 데이터 제공
+ */
+@RestController
+@RequestMapping("/api/dashboard")
+@RequiredArgsConstructor
+public class DashboardController {
+
+    private final DashboardService dashboardService;
+    private final HeartbeatService heartbeatService;
+
+    /**
+     * 대시보드 요약 통계 조회
+     */
+    @GetMapping("/summary")
+    public ResponseEntity<ApiResponse<DashboardStatsResponse>> getSummary() {
+        DashboardStatsResponse summary = dashboardService.getSummary();
+        return ResponseEntity.ok(ApiResponse.ok(summary));
+    }
+
+    /**
+     * 시간별 요청 추이 조회
+     */
+    @GetMapping("/hourly-trend")
+    public ResponseEntity<ApiResponse<List<HourlyTrendResponse>>> getHourlyTrend() {
+        List<HourlyTrendResponse> trend = dashboardService.getHourlyTrend();
+        return ResponseEntity.ok(ApiResponse.ok(trend));
+    }
+
+    /**
+     * 서비스별 요청 비율 조회
+     */
+    @GetMapping("/service-ratio")
+    public ResponseEntity<ApiResponse<List<ServiceRatioResponse>>> getServiceRatio() {
+        List<ServiceRatioResponse> ratio = dashboardService.getServiceRatio();
+        return ResponseEntity.ok(ApiResponse.ok(ratio));
+    }
+
+    /**
+     * 에러율 추이 조회 (시간별, 서비스별)
+     */
+    @GetMapping("/error-trend")
+    public ResponseEntity<ApiResponse<List<ErrorTrendResponse>>> getErrorTrend() {
+        List<ErrorTrendResponse> trend = dashboardService.getErrorTrend();
+        return ResponseEntity.ok(ApiResponse.ok(trend));
+    }
+
+    /**
+     * 상위 API 랭킹 조회
+     */
+    @GetMapping("/top-apis")
+    public ResponseEntity<ApiResponse<List<TopApiResponse>>> getTopApis(
+            @RequestParam(defaultValue = "10") int limit) {
+        List<TopApiResponse> topApis = dashboardService.getTopApis(limit);
+        return ResponseEntity.ok(ApiResponse.ok(topApis));
+    }
+
+    /**
+     * 테넌트별 요청 비율 조회
+     */
+    @GetMapping("/tenant-request-ratio")
+    public ResponseEntity<ApiResponse<List<TenantRatioResponse>>> getTenantRequestRatio() {
+        List<TenantRatioResponse> ratio = dashboardService.getTenantRequestRatio();
+        return ResponseEntity.ok(ApiResponse.ok(ratio));
+    }
+
+    /**
+     * 테넌트별 사용자 비율 조회
+     */
+    @GetMapping("/tenant-user-ratio")
+    public ResponseEntity<ApiResponse<List<TenantRatioResponse>>> getTenantUserRatio() {
+        List<TenantRatioResponse> ratio = dashboardService.getTenantUserRatio();
+        return ResponseEntity.ok(ApiResponse.ok(ratio));
+    }
+
+    /**
+     * 최근 요청 로그 조회
+     */
+    @GetMapping("/recent-logs")
+    public ResponseEntity<ApiResponse<List<RequestLogResponse>>> getRecentLogs() {
+        List<RequestLogResponse> logs = dashboardService.getRecentLogs();
+        return ResponseEntity.ok(ApiResponse.ok(logs));
+    }
+
+    /**
+     * 전체 서비스 헬스 상태 조회 (하트비트)
+     */
+    @GetMapping("/heartbeat")
+    public ResponseEntity<ApiResponse<List<HeartbeatStatusResponse>>> getHeartbeat() {
+        List<HeartbeatStatusResponse> statuses = heartbeatService.getAllServiceStatus();
+        return ResponseEntity.ok(ApiResponse.ok(statuses));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/controller/HeartbeatController.java b/src/main/java/com/gcsc/connection/monitoring/controller/HeartbeatController.java
new file mode 100644
index 0000000..620fbad
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/controller/HeartbeatController.java
@@ -0,0 +1,77 @@
+package com.gcsc.connection.monitoring.controller;
+
+import com.gcsc.connection.common.dto.ApiResponse;
+import com.gcsc.connection.monitoring.dto.HeartbeatStatusResponse;
+import com.gcsc.connection.monitoring.dto.HealthHistoryResponse;
+import com.gcsc.connection.monitoring.dto.ServiceStatusDetailResponse;
+import com.gcsc.connection.monitoring.service.HeartbeatService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 헬스체크(하트비트) 모니터링 API
+ */
+@RestController
+@RequestMapping("/api/heartbeat")
+@RequiredArgsConstructor
+public class HeartbeatController {
+
+    private final HeartbeatService heartbeatService;
+
+    /**
+     * 전체 서비스 헬스 상태 조회
+     */
+    @GetMapping("/status")
+    public ResponseEntity<ApiResponse<List<HeartbeatStatusResponse>>> getAllServiceStatus() {
+        List<HeartbeatStatusResponse> statuses = heartbeatService.getAllServiceStatus();
+        return ResponseEntity.ok(ApiResponse.ok(statuses));
+    }
+
+    /**
+     * 전체 서비스 상태 상세 (status page)
+     */
+    @GetMapping("/status/detail")
+    public ResponseEntity<ApiResponse<List<ServiceStatusDetailResponse>>> getAllStatusDetail() {
+        List<ServiceStatusDetailResponse> details = heartbeatService.getAllServiceStatusDetail();
+        return ResponseEntity.ok(ApiResponse.ok(details));
+    }
+
+    /**
+     * 단일 서비스 상태 상세 (status page)
+     */
+    @GetMapping("/{serviceId}/status/detail")
+    public ResponseEntity<ApiResponse<ServiceStatusDetailResponse>> getServiceStatusDetail(
+            @PathVariable Long serviceId) {
+        ServiceStatusDetailResponse detail = heartbeatService.getServiceStatusDetail(serviceId);
+        return ResponseEntity.ok(ApiResponse.ok(detail));
+    }
+
+    /**
+     * 서비스 헬스체크 이력 조회
+     */
+    @GetMapping("/{serviceId}/history")
+    public ResponseEntity<ApiResponse<List<HealthHistoryResponse>>> getHealthHistory(
+            @PathVariable Long serviceId) {
+        List<HealthHistoryResponse> history = heartbeatService.getHealthHistory(serviceId);
+        return ResponseEntity.ok(ApiResponse.ok(history));
+    }
+
+    /**
+     * 수동 헬스체크 실행
+     */
+    @PostMapping("/{serviceId}/check")
+    @PreAuthorize("hasAnyRole('ADMIN','MANAGER')")
+    public ResponseEntity<ApiResponse<HeartbeatStatusResponse>> checkService(
+            @PathVariable Long serviceId) {
+        HeartbeatStatusResponse result = heartbeatService.checkService(serviceId);
+        return ResponseEntity.ok(ApiResponse.ok(result));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/controller/RequestLogController.java b/src/main/java/com/gcsc/connection/monitoring/controller/RequestLogController.java
new file mode 100644
index 0000000..ffb3008
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/controller/RequestLogController.java
@@ -0,0 +1,62 @@
+package com.gcsc.connection.monitoring.controller;
+
+import com.gcsc.connection.common.dto.ApiResponse;
+import com.gcsc.connection.common.dto.PageResponse;
+import com.gcsc.connection.monitoring.dto.RequestLogResponse;
+import com.gcsc.connection.monitoring.dto.RequestLogSearchDto;
+import com.gcsc.connection.monitoring.service.RequestLogService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+/**
+ * 요청 로그 조회 API
+ */
+@RestController
+@RequestMapping("/api/monitoring")
+@RequiredArgsConstructor
+public class RequestLogController {
+
+    private final RequestLogService requestLogService;
+
+    /**
+     * 요청 로그 검색
+     */
+    @GetMapping("/logs")
+    public ResponseEntity<ApiResponse<PageResponse<RequestLogResponse>>> searchLogs(
+        @RequestParam(required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
+        LocalDate startDate,
+        @RequestParam(required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
+        LocalDate endDate,
+        @RequestParam(required = false) Long serviceId,
+        @RequestParam(required = false) String requestStatus,
+        @RequestParam(required = false) String requestMethod,
+        @RequestParam(required = false) String requestIp,
+        @RequestParam(defaultValue = "0") int page,
+        @RequestParam(defaultValue = "20") int size
+    ) {
+        LocalDateTime startDateTime = startDate != null ? startDate.atStartOfDay() : null;
+        LocalDateTime endDateTime = endDate != null ? endDate.plusDays(1).atStartOfDay() : null;
+        RequestLogSearchDto searchDto = new RequestLogSearchDto(
+            startDateTime, endDateTime, serviceId, requestStatus, requestMethod, requestIp, page, size);
+        Page<RequestLogResponse> result = requestLogService.searchLogs(searchDto);
+        return ResponseEntity.ok(ApiResponse.ok(PageResponse.from(result)));
+    }
+
+    /**
+     * 요청 로그 상세 조회
+     */
+    @GetMapping("/logs/{id}")
+    public ResponseEntity<ApiResponse<RequestLogResponse>> getLogDetail(@PathVariable Long id) {
+        return ResponseEntity.ok(ApiResponse.ok(requestLogService.getLogDetail(id)));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/DailyUptimeResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/DailyUptimeResponse.java
new file mode 100644
index 0000000..cbd848d
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/DailyUptimeResponse.java
@@ -0,0 +1,10 @@
+package com.gcsc.connection.monitoring.dto;
+
+import java.time.LocalDate;
+
+public record DailyUptimeResponse(
+    LocalDate date,
+    long totalChecks,
+    long upChecks,
+    double uptimePercent
+) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/DashboardStatsResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/DashboardStatsResponse.java
new file mode 100644
index 0000000..a549a7b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/DashboardStatsResponse.java
@@ -0,0 +1,11 @@
+package com.gcsc.connection.monitoring.dto;
+
+public record DashboardStatsResponse(
+    long totalRequests,
+    long yesterdayRequests,
+    double changePercent,
+    double successRate,
+    long failureCount,
+    double avgResponseTime,
+    long activeUserCount
+) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/ErrorTrendResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/ErrorTrendResponse.java
new file mode 100644
index 0000000..8efa632
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/ErrorTrendResponse.java
@@ -0,0 +1,3 @@
+package com.gcsc.connection.monitoring.dto;
+
+public record ErrorTrendResponse(int hour, String serviceName, double errorRate) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/HealthHistoryResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/HealthHistoryResponse.java
new file mode 100644
index 0000000..cd05a80
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/HealthHistoryResponse.java
@@ -0,0 +1,28 @@
+package com.gcsc.connection.monitoring.dto;
+
+import com.gcsc.connection.monitoring.entity.SnpServiceHealthLog;
+
+import java.time.LocalDateTime;
+
+public record HealthHistoryResponse(
+    Long logId,
+    Long serviceId,
+    String previousStatus,
+    String currentStatus,
+    Integer responseTime,
+    String errorMessage,
+    LocalDateTime checkedAt
+) {
+
+    public static HealthHistoryResponse from(SnpServiceHealthLog log) {
+        return new HealthHistoryResponse(
+            log.getLogId(),
+            log.getService().getServiceId(),
+            log.getPreviousStatus(),
+            log.getCurrentStatus(),
+            log.getResponseTime(),
+            log.getErrorMessage(),
+            log.getCheckedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/HeartbeatStatusResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/HeartbeatStatusResponse.java
new file mode 100644
index 0000000..8290cd3
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/HeartbeatStatusResponse.java
@@ -0,0 +1,26 @@
+package com.gcsc.connection.monitoring.dto;
+
+import com.gcsc.connection.service.entity.SnpService;
+
+import java.time.LocalDateTime;
+
+public record HeartbeatStatusResponse(
+    Long serviceId,
+    String serviceCode,
+    String serviceName,
+    String healthStatus,
+    LocalDateTime healthCheckedAt,
+    Integer healthResponseTime
+) {
+
+    public static HeartbeatStatusResponse from(SnpService s) {
+        return new HeartbeatStatusResponse(
+            s.getServiceId(),
+            s.getServiceCode(),
+            s.getServiceName(),
+            s.getHealthStatus().name(),
+            s.getHealthCheckedAt(),
+            s.getHealthResponseTime()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/HourlyTrendResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/HourlyTrendResponse.java
new file mode 100644
index 0000000..981f08f
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/HourlyTrendResponse.java
@@ -0,0 +1,3 @@
+package com.gcsc.connection.monitoring.dto;
+
+public record HourlyTrendResponse(int hour, long successCount, long failureCount) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/RecentCheckResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/RecentCheckResponse.java
new file mode 100644
index 0000000..bc8ba20
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/RecentCheckResponse.java
@@ -0,0 +1,21 @@
+package com.gcsc.connection.monitoring.dto;
+
+import com.gcsc.connection.monitoring.entity.SnpServiceHealthLog;
+
+import java.time.LocalDateTime;
+
+public record RecentCheckResponse(
+    String status,
+    Integer responseTime,
+    String errorMessage,
+    LocalDateTime checkedAt
+) {
+    public static RecentCheckResponse from(SnpServiceHealthLog log) {
+        return new RecentCheckResponse(
+            log.getCurrentStatus(),
+            log.getResponseTime(),
+            log.getErrorMessage(),
+            log.getCheckedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/RequestLogResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/RequestLogResponse.java
new file mode 100644
index 0000000..0813185
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/RequestLogResponse.java
@@ -0,0 +1,73 @@
+package com.gcsc.connection.monitoring.dto;
+
+import com.gcsc.connection.monitoring.entity.SnpApiRequestLog;
+
+import java.time.LocalDateTime;
+
+public record RequestLogResponse(
+    Long logId,
+    String requestUrl,
+    String requestMethod,
+    String requestStatus,
+    String requestIp,
+    Integer responseStatus,
+    Integer responseTime,
+    Long responseSize,
+    String errorMessage,
+    LocalDateTime requestedAt,
+    Long serviceId,
+    String serviceName,
+    String apiKeyPrefix,
+    String userName,
+    String requestHeaders,
+    String requestParams
+) {
+
+    /**
+     * 목록 조회용 변환 (헤더/파라미터 제외)
+     */
+    public static RequestLogResponse from(SnpApiRequestLog log) {
+        return new RequestLogResponse(
+            log.getLogId(),
+            log.getRequestUrl(),
+            log.getRequestMethod(),
+            log.getRequestStatus(),
+            log.getRequestIp(),
+            log.getResponseStatus(),
+            log.getResponseTime(),
+            log.getResponseSize(),
+            log.getErrorMessage(),
+            log.getRequestedAt(),
+            log.getService() != null ? log.getService().getServiceId() : null,
+            log.getService() != null ? log.getService().getServiceName() : null,
+            log.getApiKey() != null ? log.getApiKey().getApiKeyPrefix() : null,
+            log.getUser() != null ? log.getUser().getUserName() : null,
+            null,
+            null
+        );
+    }
+
+    /**
+     * 상세 조회용 변환 (모든 필드 포함)
+     */
+    public static RequestLogResponse fromDetail(SnpApiRequestLog log) {
+        return new RequestLogResponse(
+            log.getLogId(),
+            log.getRequestUrl(),
+            log.getRequestMethod(),
+            log.getRequestStatus(),
+            log.getRequestIp(),
+            log.getResponseStatus(),
+            log.getResponseTime(),
+            log.getResponseSize(),
+            log.getErrorMessage(),
+            log.getRequestedAt(),
+            log.getService() != null ? log.getService().getServiceId() : null,
+            log.getService() != null ? log.getService().getServiceName() : null,
+            log.getApiKey() != null ? log.getApiKey().getApiKeyPrefix() : null,
+            log.getUser() != null ? log.getUser().getUserName() : null,
+            log.getRequestHeaders(),
+            log.getRequestParams()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/RequestLogSearchDto.java b/src/main/java/com/gcsc/connection/monitoring/dto/RequestLogSearchDto.java
new file mode 100644
index 0000000..3a2474c
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/RequestLogSearchDto.java
@@ -0,0 +1,20 @@
+package com.gcsc.connection.monitoring.dto;
+
+import java.time.LocalDateTime;
+
+public record RequestLogSearchDto(
+    LocalDateTime startDate,
+    LocalDateTime endDate,
+    Long serviceId,
+    String requestStatus,
+    String requestMethod,
+    String requestIp,
+    int page,
+    int size
+) {
+
+    public RequestLogSearchDto {
+        if (page < 0) page = 0;
+        if (size <= 0) size = 20;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/ServiceRatioResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/ServiceRatioResponse.java
new file mode 100644
index 0000000..f46f20e
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/ServiceRatioResponse.java
@@ -0,0 +1,3 @@
+package com.gcsc.connection.monitoring.dto;
+
+public record ServiceRatioResponse(String serviceName, long count) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/ServiceStatusDetailResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/ServiceStatusDetailResponse.java
new file mode 100644
index 0000000..8b44ff1
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/ServiceStatusDetailResponse.java
@@ -0,0 +1,15 @@
+package com.gcsc.connection.monitoring.dto;
+
+import java.util.List;
+
+public record ServiceStatusDetailResponse(
+    Long serviceId,
+    String serviceCode,
+    String serviceName,
+    String currentStatus,
+    Integer lastResponseTime,
+    String lastCheckedAt,
+    double uptimePercent90d,
+    List<DailyUptimeResponse> dailyUptime,
+    List<RecentCheckResponse> recentChecks
+) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/TenantRatioResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/TenantRatioResponse.java
new file mode 100644
index 0000000..a9c70c0
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/TenantRatioResponse.java
@@ -0,0 +1,3 @@
+package com.gcsc.connection.monitoring.dto;
+
+public record TenantRatioResponse(String tenantName, long count) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/dto/TopApiResponse.java b/src/main/java/com/gcsc/connection/monitoring/dto/TopApiResponse.java
new file mode 100644
index 0000000..d2aebb8
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/dto/TopApiResponse.java
@@ -0,0 +1,3 @@
+package com.gcsc.connection.monitoring.dto;
+
+public record TopApiResponse(String serviceName, String apiName, String requestUrl, String requestMethod, long count) {}
diff --git a/src/main/java/com/gcsc/connection/monitoring/entity/SnpApiRequestLog.java b/src/main/java/com/gcsc/connection/monitoring/entity/SnpApiRequestLog.java
new file mode 100644
index 0000000..b50218b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/entity/SnpApiRequestLog.java
@@ -0,0 +1,104 @@
+package com.gcsc.connection.monitoring.entity;
+
+import com.gcsc.connection.apikey.entity.SnpApiKey;
+import com.gcsc.connection.service.entity.SnpService;
+import com.gcsc.connection.tenant.entity.SnpTenant;
+import com.gcsc.connection.user.entity.SnpUser;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_api_request_log", schema = "common")
+public class SnpApiRequestLog {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "log_id")
+    private Long logId;
+
+    @Column(name = "request_url", length = 2000)
+    private String requestUrl;
+
+    @Column(name = "request_params", columnDefinition = "TEXT")
+    private String requestParams;
+
+    @Column(name = "request_method", length = 10)
+    private String requestMethod;
+
+    @Column(name = "request_status", length = 20)
+    private String requestStatus;
+
+    @Column(name = "request_headers", columnDefinition = "TEXT")
+    private String requestHeaders;
+
+    @Column(name = "request_ip", length = 45)
+    private String requestIp;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "service_id")
+    private SnpService service;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id")
+    private SnpUser user;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "api_key_id")
+    private SnpApiKey apiKey;
+
+    @Column(name = "response_size")
+    private Long responseSize;
+
+    @Column(name = "response_time")
+    private Integer responseTime;
+
+    @Column(name = "response_status")
+    private Integer responseStatus;
+
+    @Column(name = "error_message", columnDefinition = "TEXT")
+    private String errorMessage;
+
+    @Column(name = "requested_at", nullable = false)
+    private LocalDateTime requestedAt;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "tenant_id")
+    private SnpTenant tenant;
+
+    @Builder
+    public SnpApiRequestLog(String requestUrl, String requestParams, String requestMethod,
+                            String requestStatus, String requestHeaders, String requestIp,
+                            SnpService service, SnpUser user, SnpApiKey apiKey,
+                            Long responseSize, Integer responseTime, Integer responseStatus,
+                            String errorMessage, LocalDateTime requestedAt, SnpTenant tenant) {
+        this.requestUrl = requestUrl;
+        this.requestParams = requestParams;
+        this.requestMethod = requestMethod;
+        this.requestStatus = requestStatus;
+        this.requestHeaders = requestHeaders;
+        this.requestIp = requestIp;
+        this.service = service;
+        this.user = user;
+        this.apiKey = apiKey;
+        this.responseSize = responseSize;
+        this.responseTime = responseTime;
+        this.responseStatus = responseStatus;
+        this.errorMessage = errorMessage;
+        this.requestedAt = requestedAt != null ? requestedAt : LocalDateTime.now();
+        this.tenant = tenant;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/entity/SnpServiceHealthLog.java b/src/main/java/com/gcsc/connection/monitoring/entity/SnpServiceHealthLog.java
new file mode 100644
index 0000000..887770e
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/entity/SnpServiceHealthLog.java
@@ -0,0 +1,59 @@
+package com.gcsc.connection.monitoring.entity;
+
+import com.gcsc.connection.service.entity.SnpService;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_service_health_log", schema = "common")
+public class SnpServiceHealthLog {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "log_id")
+    private Long logId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "service_id", nullable = false)
+    private SnpService service;
+
+    @Column(name = "previous_status", length = 10)
+    private String previousStatus;
+
+    @Column(name = "current_status", length = 10, nullable = false)
+    private String currentStatus;
+
+    @Column(name = "response_time")
+    private Integer responseTime;
+
+    @Column(name = "error_message", columnDefinition = "TEXT")
+    private String errorMessage;
+
+    @Column(name = "checked_at", nullable = false)
+    private LocalDateTime checkedAt;
+
+    @Builder
+    public SnpServiceHealthLog(SnpService service, String previousStatus, String currentStatus,
+                               Integer responseTime, String errorMessage, LocalDateTime checkedAt) {
+        this.service = service;
+        this.previousStatus = previousStatus;
+        this.currentStatus = currentStatus;
+        this.responseTime = responseTime;
+        this.errorMessage = errorMessage;
+        this.checkedAt = checkedAt != null ? checkedAt : LocalDateTime.now();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/repository/SnpApiRequestLogRepository.java b/src/main/java/com/gcsc/connection/monitoring/repository/SnpApiRequestLogRepository.java
new file mode 100644
index 0000000..b060bf6
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/repository/SnpApiRequestLogRepository.java
@@ -0,0 +1,93 @@
+package com.gcsc.connection.monitoring.repository;
+
+import com.gcsc.connection.monitoring.entity.SnpApiRequestLog;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+public interface SnpApiRequestLogRepository extends JpaRepository<SnpApiRequestLog, Long>,
+    JpaSpecificationExecutor<SnpApiRequestLog> {
+
+    /** 오늘 요약: 총 요청, 성공 건수, 평균 응답시간 */
+    @Query(value = "SELECT COUNT(*) as total, " +
+        "COUNT(CASE WHEN request_status = 'SUCCESS' THEN 1 END) as successCount, " +
+        "COALESCE(AVG(response_time), 0) as avgResponseTime " +
+        "FROM common.snp_api_request_log WHERE requested_at >= :startOfDay", nativeQuery = true)
+    Object[] findTodayStats(@Param("startOfDay") LocalDateTime startOfDay);
+
+    /** 전일 총 요청 건수 */
+    @Query(value = "SELECT COUNT(*) FROM common.snp_api_request_log " +
+        "WHERE requested_at >= :yesterday AND requested_at < :today", nativeQuery = true)
+    long countYesterdayRequests(@Param("yesterday") LocalDateTime yesterday,
+                                @Param("today") LocalDateTime today);
+
+    /** 오늘 활성 사용자 수 */
+    @Query(value = "SELECT COUNT(DISTINCT user_id) FROM common.snp_api_request_log " +
+        "WHERE requested_at >= :startOfDay AND user_id IS NOT NULL", nativeQuery = true)
+    long countTodayActiveUsers(@Param("startOfDay") LocalDateTime startOfDay);
+
+    /** 시간별 요청 추이 (오늘) */
+    @Query(value = "SELECT CAST(EXTRACT(HOUR FROM requested_at) AS int) as hour, " +
+        "request_status as status, COUNT(*) as cnt " +
+        "FROM common.snp_api_request_log WHERE requested_at >= :startOfDay " +
+        "GROUP BY 1, 2 ORDER BY 1", nativeQuery = true)
+    List<Object[]> findHourlyTrend(@Param("startOfDay") LocalDateTime startOfDay);
+
+    /** 서비스별 요청 비율 */
+    @Query(value = "SELECT s.service_name, COUNT(*) as cnt " +
+        "FROM common.snp_api_request_log l " +
+        "LEFT JOIN common.snp_service s ON l.service_id = s.service_id " +
+        "WHERE l.requested_at >= :startOfDay " +
+        "GROUP BY s.service_name ORDER BY cnt DESC", nativeQuery = true)
+    List<Object[]> findServiceRatio(@Param("startOfDay") LocalDateTime startOfDay);
+
+    /** 에러율 추이 (시간별) */
+    @Query(value = "SELECT CAST(EXTRACT(HOUR FROM l.requested_at) AS int) as hour, " +
+        "COALESCE(s.service_name, 'Unknown') as serviceName, " +
+        "CAST(COUNT(CASE WHEN l.request_status != 'SUCCESS' THEN 1 END) AS float) " +
+        "/ NULLIF(COUNT(*), 0) * 100 as errorRate " +
+        "FROM common.snp_api_request_log l " +
+        "LEFT JOIN common.snp_service s ON l.service_id = s.service_id " +
+        "WHERE l.requested_at >= :startOfDay " +
+        "GROUP BY 1, 2 ORDER BY 1", nativeQuery = true)
+    List<Object[]> findErrorTrend(@Param("startOfDay") LocalDateTime startOfDay);
+
+    /** 상위 API 랭킹 (service_name, api_name 포함) */
+    @Query(value = "SELECT COALESCE(s.service_name, 'Unknown') as serviceName, " +
+        "COALESCE(a.api_name, l.request_url) as apiName, " +
+        "l.request_url, l.request_method, COUNT(*) as cnt " +
+        "FROM common.snp_api_request_log l " +
+        "LEFT JOIN common.snp_service s ON l.service_id = s.service_id " +
+        "LEFT JOIN common.snp_service_api a ON s.service_id = a.service_id " +
+        "AND a.api_path = SUBSTRING(l.request_url FROM '/gateway/[^/]+(.*)') " +
+        "AND a.api_method = l.request_method " +
+        "WHERE l.requested_at >= :startOfDay " +
+        "GROUP BY s.service_name, a.api_name, l.request_url, l.request_method " +
+        "ORDER BY cnt DESC LIMIT :limit", nativeQuery = true)
+    List<Object[]> findTopApis(@Param("startOfDay") LocalDateTime startOfDay,
+                               @Param("limit") int limit);
+
+    /** 테넌트별 요청 비율 */
+    @Query(value = "SELECT COALESCE(t.tenant_name, 'Unknown') as tenantName, COUNT(*) as cnt " +
+        "FROM common.snp_api_request_log l " +
+        "LEFT JOIN common.snp_tenant t ON l.tenant_id = t.tenant_id " +
+        "WHERE l.requested_at >= :startOfDay " +
+        "GROUP BY t.tenant_name ORDER BY cnt DESC", nativeQuery = true)
+    List<Object[]> findTenantRequestRatio(@Param("startOfDay") LocalDateTime startOfDay);
+
+    /** 테넌트별 사용자 비율 */
+    @Query(value = "SELECT COALESCE(t.tenant_name, 'Unknown') as tenantName, " +
+        "COUNT(DISTINCT l.user_id) as userCount " +
+        "FROM common.snp_api_request_log l " +
+        "LEFT JOIN common.snp_tenant t ON l.tenant_id = t.tenant_id " +
+        "WHERE l.requested_at >= :startOfDay AND l.user_id IS NOT NULL " +
+        "GROUP BY t.tenant_name ORDER BY userCount DESC", nativeQuery = true)
+    List<Object[]> findTenantUserRatio(@Param("startOfDay") LocalDateTime startOfDay);
+
+    /** 최근 로그 20건 */
+    List<SnpApiRequestLog> findTop20ByOrderByRequestedAtDesc();
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/repository/SnpServiceHealthLogRepository.java b/src/main/java/com/gcsc/connection/monitoring/repository/SnpServiceHealthLogRepository.java
new file mode 100644
index 0000000..6004126
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/repository/SnpServiceHealthLogRepository.java
@@ -0,0 +1,32 @@
+package com.gcsc.connection.monitoring.repository;
+
+import com.gcsc.connection.monitoring.entity.SnpServiceHealthLog;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+public interface SnpServiceHealthLogRepository extends JpaRepository<SnpServiceHealthLog, Long> {
+
+    List<SnpServiceHealthLog> findByServiceServiceIdOrderByCheckedAtDesc(Long serviceId);
+
+    List<SnpServiceHealthLog> findByServiceServiceIdOrderByCheckedAtDesc(Long serviceId, Pageable pageable);
+
+    /** 일별 uptime 비율 (service_id별, 90일) */
+    @Query(value = "SELECT DATE(checked_at) as check_date, " +
+        "COUNT(*) as total, " +
+        "COUNT(CASE WHEN current_status = 'UP' THEN 1 END) as up_count " +
+        "FROM common.snp_service_health_log " +
+        "WHERE service_id = :serviceId AND checked_at >= :since " +
+        "GROUP BY DATE(checked_at) ORDER BY check_date", nativeQuery = true)
+    List<Object[]> findDailyUptime(@Param("serviceId") Long serviceId, @Param("since") LocalDateTime since);
+
+    /** 90일 이전 데이터 삭제 */
+    @Modifying
+    @Query("DELETE FROM SnpServiceHealthLog h WHERE h.checkedAt < :before")
+    int deleteOlderThan(@Param("before") LocalDateTime before);
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/scheduler/HeartbeatScheduler.java b/src/main/java/com/gcsc/connection/monitoring/scheduler/HeartbeatScheduler.java
new file mode 100644
index 0000000..86f46d4
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/scheduler/HeartbeatScheduler.java
@@ -0,0 +1,25 @@
+package com.gcsc.connection.monitoring.scheduler;
+
+import com.gcsc.connection.monitoring.service.HeartbeatService;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class HeartbeatScheduler {
+
+    private final HeartbeatService heartbeatService;
+
+    /**
+     * 주기적 헬스체크 스케줄러
+     */
+    @Scheduled(fixedDelayString = "${app.heartbeat.default-interval-seconds}000")
+    public void scheduledHealthCheck() {
+        log.debug("스케줄 헬스체크 시작");
+        heartbeatService.checkAllActiveServices();
+        log.debug("스케줄 헬스체크 완료");
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/service/DashboardService.java b/src/main/java/com/gcsc/connection/monitoring/service/DashboardService.java
new file mode 100644
index 0000000..923c6fb
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/service/DashboardService.java
@@ -0,0 +1,180 @@
+package com.gcsc.connection.monitoring.service;
+
+import com.gcsc.connection.monitoring.dto.DashboardStatsResponse;
+import com.gcsc.connection.monitoring.dto.ErrorTrendResponse;
+import com.gcsc.connection.monitoring.dto.HourlyTrendResponse;
+import com.gcsc.connection.monitoring.dto.RequestLogResponse;
+import com.gcsc.connection.monitoring.dto.ServiceRatioResponse;
+import com.gcsc.connection.monitoring.dto.TenantRatioResponse;
+import com.gcsc.connection.monitoring.dto.TopApiResponse;
+import com.gcsc.connection.monitoring.repository.SnpApiRequestLogRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class DashboardService {
+
+    private final SnpApiRequestLogRepository snpApiRequestLogRepository;
+
+    /**
+     * 대시보드 요약 통계 조회
+     */
+    @Transactional(readOnly = true)
+    public DashboardStatsResponse getSummary() {
+        LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
+        LocalDateTime yesterday = startOfDay.minusDays(1);
+
+        Object[] stats = snpApiRequestLogRepository.findTodayStats(startOfDay);
+        Object[] row = (Object[]) stats[0];
+
+        long total = ((Number) row[0]).longValue();
+        long successCount = ((Number) row[1]).longValue();
+        double avgResponseTime = ((Number) row[2]).doubleValue();
+
+        long yesterdayRequests = snpApiRequestLogRepository
+            .countYesterdayRequests(yesterday, startOfDay);
+
+        double changePercent = yesterdayRequests > 0
+            ? ((double) (total - yesterdayRequests) / yesterdayRequests) * 100
+            : 0.0;
+
+        double successRate = total > 0
+            ? ((double) successCount / total) * 100
+            : 0.0;
+
+        long failureCount = total - successCount;
+
+        long activeUserCount = snpApiRequestLogRepository
+            .countTodayActiveUsers(startOfDay);
+
+        return new DashboardStatsResponse(
+            total, yesterdayRequests, changePercent,
+            successRate, failureCount, avgResponseTime, activeUserCount
+        );
+    }
+
+    /**
+     * 시간별 요청 추이 조회 (오늘, 0~23시)
+     */
+    @Transactional(readOnly = true)
+    public List<HourlyTrendResponse> getHourlyTrend() {
+        LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
+        List<Object[]> rows = snpApiRequestLogRepository.findHourlyTrend(startOfDay);
+
+        Map<Integer, long[]> hourMap = new HashMap<>();
+        for (Object[] row : rows) {
+            int hour = ((Number) row[0]).intValue();
+            String status = (String) row[1];
+            long cnt = ((Number) row[2]).longValue();
+
+            hourMap.computeIfAbsent(hour, k -> new long[2]);
+            if ("SUCCESS".equals(status)) {
+                hourMap.get(hour)[0] += cnt;
+            } else {
+                hourMap.get(hour)[1] += cnt;
+            }
+        }
+
+        List<HourlyTrendResponse> result = new ArrayList<>();
+        for (int h = 0; h < 24; h++) {
+            long[] counts = hourMap.getOrDefault(h, new long[2]);
+            result.add(new HourlyTrendResponse(h, counts[0], counts[1]));
+        }
+        return result;
+    }
+
+    /**
+     * 서비스별 요청 비율 조회
+     */
+    @Transactional(readOnly = true)
+    public List<ServiceRatioResponse> getServiceRatio() {
+        LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
+        return snpApiRequestLogRepository.findServiceRatio(startOfDay).stream()
+            .map(row -> new ServiceRatioResponse(
+                (String) row[0],
+                ((Number) row[1]).longValue()
+            ))
+            .toList();
+    }
+
+    /**
+     * 에러율 추이 조회 (시간별, 서비스별)
+     */
+    @Transactional(readOnly = true)
+    public List<ErrorTrendResponse> getErrorTrend() {
+        LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
+        return snpApiRequestLogRepository.findErrorTrend(startOfDay).stream()
+            .map(row -> new ErrorTrendResponse(
+                ((Number) row[0]).intValue(),
+                (String) row[1],
+                ((Number) row[2]).doubleValue()
+            ))
+            .toList();
+    }
+
+    /**
+     * 상위 API 랭킹 조회
+     */
+    @Transactional(readOnly = true)
+    public List<TopApiResponse> getTopApis(int limit) {
+        LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
+        return snpApiRequestLogRepository.findTopApis(startOfDay, limit).stream()
+            .map(row -> new TopApiResponse(
+                (String) row[0],
+                (String) row[1],
+                (String) row[2],
+                (String) row[3],
+                ((Number) row[4]).longValue()
+            ))
+            .toList();
+    }
+
+    /**
+     * 테넌트별 요청 비율 조회
+     */
+    @Transactional(readOnly = true)
+    public List<TenantRatioResponse> getTenantRequestRatio() {
+        LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
+        return snpApiRequestLogRepository.findTenantRequestRatio(startOfDay).stream()
+            .map(row -> new TenantRatioResponse(
+                (String) row[0],
+                ((Number) row[1]).longValue()
+            ))
+            .toList();
+    }
+
+    /**
+     * 테넌트별 사용자 비율 조회
+     */
+    @Transactional(readOnly = true)
+    public List<TenantRatioResponse> getTenantUserRatio() {
+        LocalDateTime startOfDay = LocalDate.now().atStartOfDay();
+        return snpApiRequestLogRepository.findTenantUserRatio(startOfDay).stream()
+            .map(row -> new TenantRatioResponse(
+                (String) row[0],
+                ((Number) row[1]).longValue()
+            ))
+            .toList();
+    }
+
+    /**
+     * 최근 로그 20건 조회
+     */
+    @Transactional(readOnly = true)
+    public List<RequestLogResponse> getRecentLogs() {
+        return snpApiRequestLogRepository.findTop20ByOrderByRequestedAtDesc().stream()
+            .map(RequestLogResponse::from)
+            .toList();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/service/HeartbeatService.java b/src/main/java/com/gcsc/connection/monitoring/service/HeartbeatService.java
new file mode 100644
index 0000000..9fdb2bc
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/service/HeartbeatService.java
@@ -0,0 +1,186 @@
+package com.gcsc.connection.monitoring.service;
+
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.monitoring.dto.DailyUptimeResponse;
+import com.gcsc.connection.monitoring.dto.HeartbeatStatusResponse;
+import com.gcsc.connection.monitoring.dto.HealthHistoryResponse;
+import com.gcsc.connection.monitoring.dto.RecentCheckResponse;
+import com.gcsc.connection.monitoring.dto.ServiceStatusDetailResponse;
+import com.gcsc.connection.monitoring.entity.SnpServiceHealthLog;
+import com.gcsc.connection.monitoring.repository.SnpServiceHealthLogRepository;
+import com.gcsc.connection.service.entity.ServiceStatus;
+import com.gcsc.connection.service.entity.SnpService;
+import com.gcsc.connection.service.repository.SnpServiceRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.reactive.function.client.WebClient;
+
+import org.springframework.data.domain.PageRequest;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class HeartbeatService {
+
+    private final SnpServiceRepository snpServiceRepository;
+    private final SnpServiceHealthLogRepository snpServiceHealthLogRepository;
+    private final WebClient webClient;
+
+    /**
+     * 전체 서비스 헬스 상태 조회
+     */
+    @Transactional(readOnly = true)
+    public List<HeartbeatStatusResponse> getAllServiceStatus() {
+        return snpServiceRepository.findAll().stream()
+            .map(HeartbeatStatusResponse::from)
+            .toList();
+    }
+
+    /**
+     * 서비스 헬스체크 이력 조회
+     */
+    @Transactional(readOnly = true)
+    public List<HealthHistoryResponse> getHealthHistory(Long serviceId) {
+        snpServiceRepository.findById(serviceId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.SERVICE_NOT_FOUND));
+
+        return snpServiceHealthLogRepository.findByServiceServiceIdOrderByCheckedAtDesc(serviceId).stream()
+            .map(HealthHistoryResponse::from)
+            .toList();
+    }
+
+    /**
+     * 서비스 상태 상세 조회 (status.claude.com 스타일)
+     */
+    @Transactional(readOnly = true)
+    public ServiceStatusDetailResponse getServiceStatusDetail(Long serviceId) {
+        SnpService service = snpServiceRepository.findById(serviceId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.SERVICE_NOT_FOUND));
+
+        LocalDateTime since90d = LocalDateTime.now().minusDays(90);
+
+        // 90일 일별 uptime
+        List<Object[]> dailyRows = snpServiceHealthLogRepository.findDailyUptime(serviceId, since90d);
+        List<DailyUptimeResponse> dailyUptime = new ArrayList<>();
+        long totalAll = 0;
+        long upAll = 0;
+
+        for (Object[] row : dailyRows) {
+            LocalDate date = ((java.sql.Date) row[0]).toLocalDate();
+            long total = ((Number) row[1]).longValue();
+            long upCount = ((Number) row[2]).longValue();
+            double pct = total > 0 ? (double) upCount / total * 100 : 0;
+            dailyUptime.add(new DailyUptimeResponse(date, total, upCount, pct));
+            totalAll += total;
+            upAll += upCount;
+        }
+
+        double uptimePercent90d = totalAll > 0 ? (double) upAll / totalAll * 100 : 0;
+
+        // 최근 60건 체크 이력
+        List<RecentCheckResponse> recentChecks = snpServiceHealthLogRepository
+            .findByServiceServiceIdOrderByCheckedAtDesc(serviceId, PageRequest.of(0, 60))
+            .stream()
+            .map(RecentCheckResponse::from)
+            .toList();
+
+        return new ServiceStatusDetailResponse(
+            service.getServiceId(),
+            service.getServiceCode(),
+            service.getServiceName(),
+            service.getHealthStatus().name(),
+            service.getHealthResponseTime(),
+            service.getHealthCheckedAt() != null ? service.getHealthCheckedAt().toString() : null,
+            uptimePercent90d,
+            dailyUptime,
+            recentChecks
+        );
+    }
+
+    /**
+     * 전체 서비스 상태 요약 (status page 메인)
+     */
+    @Transactional(readOnly = true)
+    public List<ServiceStatusDetailResponse> getAllServiceStatusDetail() {
+        return snpServiceRepository.findByIsActiveTrue().stream()
+            .map(s -> getServiceStatusDetail(s.getServiceId()))
+            .toList();
+    }
+
+    /**
+     * 단일 서비스 헬스체크 실행
+     */
+    @Transactional
+    public HeartbeatStatusResponse checkService(Long serviceId) {
+        SnpService service = snpServiceRepository.findById(serviceId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.SERVICE_NOT_FOUND));
+
+        performHealthCheck(service);
+        return HeartbeatStatusResponse.from(service);
+    }
+
+    /**
+     * 활성화된 모든 서비스 헬스체크 실행
+     */
+    @Transactional
+    public void checkAllActiveServices() {
+        List<SnpService> activeServices = snpServiceRepository.findByIsActiveTrue();
+        activeServices.stream()
+            .filter(s -> s.getHealthCheckUrl() != null && !s.getHealthCheckUrl().isBlank())
+            .forEach(this::performHealthCheck);
+    }
+
+    /**
+     * 개별 서비스 헬스체크 수행
+     */
+    private void performHealthCheck(SnpService service) {
+        ServiceStatus previousStatus = service.getHealthStatus();
+        ServiceStatus newStatus;
+        Integer responseTime = null;
+        String errorMessage = null;
+
+        long start = System.currentTimeMillis();
+
+        try {
+            webClient.get()
+                .uri(service.getHealthCheckUrl())
+                .retrieve()
+                .toBodilessEntity()
+                .block();
+
+            newStatus = ServiceStatus.UP;
+            responseTime = (int) (System.currentTimeMillis() - start);
+        } catch (Exception e) {
+            newStatus = ServiceStatus.DOWN;
+            responseTime = (int) (System.currentTimeMillis() - start);
+            errorMessage = e.getMessage();
+            log.warn("헬스체크 실패 - 서비스: {}, 오류: {}", service.getServiceCode(), e.getMessage());
+        }
+
+        // 매 체크마다 기록 (status page 이력용)
+        SnpServiceHealthLog healthLog = SnpServiceHealthLog.builder()
+            .service(service)
+            .previousStatus(previousStatus.name())
+            .currentStatus(newStatus.name())
+            .responseTime(responseTime)
+            .errorMessage(errorMessage)
+            .checkedAt(LocalDateTime.now())
+            .build();
+        snpServiceHealthLogRepository.save(healthLog);
+
+        if (previousStatus != newStatus) {
+            log.info("서비스 상태 변경 - {}: {} -> {}", service.getServiceCode(), previousStatus, newStatus);
+        }
+
+        service.updateHealthStatus(newStatus, responseTime);
+        snpServiceRepository.save(service);
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/service/RequestLogService.java b/src/main/java/com/gcsc/connection/monitoring/service/RequestLogService.java
new file mode 100644
index 0000000..0bccaf9
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/service/RequestLogService.java
@@ -0,0 +1,59 @@
+package com.gcsc.connection.monitoring.service;
+
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.monitoring.dto.RequestLogResponse;
+import com.gcsc.connection.monitoring.dto.RequestLogSearchDto;
+import com.gcsc.connection.monitoring.entity.SnpApiRequestLog;
+import com.gcsc.connection.monitoring.repository.SnpApiRequestLogRepository;
+import com.gcsc.connection.monitoring.spec.RequestLogSpecification;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.domain.Specification;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class RequestLogService {
+
+    private final SnpApiRequestLogRepository snpApiRequestLogRepository;
+
+    /**
+     * 비동기 요청 로그 저장
+     */
+    @Async("taskExecutor")
+    @Transactional
+    public void saveLogAsync(SnpApiRequestLog logEntry) {
+        try {
+            snpApiRequestLogRepository.save(logEntry);
+        } catch (Exception e) {
+            log.error("요청 로그 저장 실패", e);
+        }
+    }
+
+    /**
+     * 요청 로그 검색
+     */
+    @Transactional(readOnly = true)
+    public Page<RequestLogResponse> searchLogs(RequestLogSearchDto searchDto) {
+        Specification<SnpApiRequestLog> spec = RequestLogSpecification.withFilters(searchDto);
+        Pageable pageable = PageRequest.of(searchDto.page(), searchDto.size());
+        return snpApiRequestLogRepository.findAll(spec, pageable).map(RequestLogResponse::from);
+    }
+
+    /**
+     * 요청 로그 상세 조회
+     */
+    @Transactional(readOnly = true)
+    public RequestLogResponse getLogDetail(Long logId) {
+        return snpApiRequestLogRepository.findById(logId)
+            .map(RequestLogResponse::fromDetail)
+            .orElseThrow(() -> new BusinessException(ErrorCode.INTERNAL_ERROR));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/monitoring/spec/RequestLogSpecification.java b/src/main/java/com/gcsc/connection/monitoring/spec/RequestLogSpecification.java
new file mode 100644
index 0000000..a7826ae
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/monitoring/spec/RequestLogSpecification.java
@@ -0,0 +1,46 @@
+package com.gcsc.connection.monitoring.spec;
+
+import com.gcsc.connection.monitoring.dto.RequestLogSearchDto;
+import com.gcsc.connection.monitoring.entity.SnpApiRequestLog;
+import jakarta.persistence.criteria.Predicate;
+import org.springframework.data.jpa.domain.Specification;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RequestLogSpecification {
+
+    private RequestLogSpecification() {
+    }
+
+    /**
+     * 검색 조건 기반 Specification 생성
+     */
+    public static Specification<SnpApiRequestLog> withFilters(RequestLogSearchDto dto) {
+        return (root, query, cb) -> {
+            List<Predicate> predicates = new ArrayList<>();
+
+            if (dto.startDate() != null) {
+                predicates.add(cb.greaterThanOrEqualTo(root.get("requestedAt"), dto.startDate()));
+            }
+            if (dto.endDate() != null) {
+                predicates.add(cb.lessThanOrEqualTo(root.get("requestedAt"), dto.endDate()));
+            }
+            if (dto.serviceId() != null) {
+                predicates.add(cb.equal(root.get("service").get("serviceId"), dto.serviceId()));
+            }
+            if (dto.requestStatus() != null && !dto.requestStatus().isBlank()) {
+                predicates.add(cb.equal(root.get("requestStatus"), dto.requestStatus()));
+            }
+            if (dto.requestMethod() != null && !dto.requestMethod().isBlank()) {
+                predicates.add(cb.equal(root.get("requestMethod"), dto.requestMethod()));
+            }
+            if (dto.requestIp() != null && !dto.requestIp().isBlank()) {
+                predicates.add(cb.like(root.get("requestIp"), dto.requestIp() + "%"));
+            }
+
+            query.orderBy(cb.desc(root.get("requestedAt")));
+            return cb.and(predicates.toArray(new Predicate[0]));
+        };
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/service/controller/ServiceController.java b/src/main/java/com/gcsc/connection/service/controller/ServiceController.java
new file mode 100644
index 0000000..b5ee865
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/controller/ServiceController.java
@@ -0,0 +1,87 @@
+package com.gcsc.connection.service.controller;
+
+import com.gcsc.connection.common.dto.ApiResponse;
+import com.gcsc.connection.service.dto.CreateServiceApiRequest;
+import com.gcsc.connection.service.dto.CreateServiceRequest;
+import com.gcsc.connection.service.dto.ServiceApiResponse;
+import com.gcsc.connection.service.dto.ServiceResponse;
+import com.gcsc.connection.service.dto.UpdateServiceRequest;
+import com.gcsc.connection.service.service.ServiceManagementService;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 서비스 관리 API
+ */
+@RestController
+@RequestMapping("/api/services")
+@RequiredArgsConstructor
+public class ServiceController {
+
+    private final ServiceManagementService serviceManagementService;
+
+    /**
+     * 전체 서비스 목록 조회
+     */
+    @GetMapping
+    public ResponseEntity<ApiResponse<List<ServiceResponse>>> getServices() {
+        List<ServiceResponse> services = serviceManagementService.getServices();
+        return ResponseEntity.ok(ApiResponse.ok(services));
+    }
+
+    /**
+     * 서비스 생성
+     */
+    @PostMapping
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<ServiceResponse>> createService(
+            @RequestBody @Valid CreateServiceRequest request) {
+        ServiceResponse service = serviceManagementService.createService(request);
+        return ResponseEntity.ok(ApiResponse.ok(service));
+    }
+
+    /**
+     * 서비스 수정
+     */
+    @PutMapping("/{id}")
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<ServiceResponse>> updateService(
+            @PathVariable Long id,
+            @RequestBody @Valid UpdateServiceRequest request) {
+        ServiceResponse service = serviceManagementService.updateService(id, request);
+        return ResponseEntity.ok(ApiResponse.ok(service));
+    }
+
+    /**
+     * 서비스 API 목록 조회
+     */
+    @GetMapping("/{id}/apis")
+    public ResponseEntity<ApiResponse<List<ServiceApiResponse>>> getServiceApis(
+            @PathVariable Long id) {
+        List<ServiceApiResponse> apis = serviceManagementService.getServiceApis(id);
+        return ResponseEntity.ok(ApiResponse.ok(apis));
+    }
+
+    /**
+     * 서비스 API 생성
+     */
+    @PostMapping("/{id}/apis")
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<ServiceApiResponse>> createServiceApi(
+            @PathVariable Long id,
+            @RequestBody @Valid CreateServiceApiRequest request) {
+        ServiceApiResponse api = serviceManagementService.createServiceApi(id, request);
+        return ResponseEntity.ok(ApiResponse.ok(api));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/service/dto/CreateServiceApiRequest.java b/src/main/java/com/gcsc/connection/service/dto/CreateServiceApiRequest.java
new file mode 100644
index 0000000..38334a2
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/dto/CreateServiceApiRequest.java
@@ -0,0 +1,11 @@
+package com.gcsc.connection.service.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record CreateServiceApiRequest(
+    @NotBlank String apiPath,
+    @NotBlank String apiMethod,
+    @NotBlank String apiName,
+    String description
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/service/dto/CreateServiceRequest.java b/src/main/java/com/gcsc/connection/service/dto/CreateServiceRequest.java
new file mode 100644
index 0000000..445d6e2
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/dto/CreateServiceRequest.java
@@ -0,0 +1,13 @@
+package com.gcsc.connection.service.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record CreateServiceRequest(
+    @NotBlank String serviceCode,
+    @NotBlank String serviceName,
+    String serviceUrl,
+    String description,
+    String healthCheckUrl,
+    Integer healthCheckInterval
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/service/dto/ServiceApiResponse.java b/src/main/java/com/gcsc/connection/service/dto/ServiceApiResponse.java
new file mode 100644
index 0000000..4d697cf
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/dto/ServiceApiResponse.java
@@ -0,0 +1,32 @@
+package com.gcsc.connection.service.dto;
+
+import com.gcsc.connection.service.entity.SnpServiceApi;
+
+import java.time.LocalDateTime;
+
+public record ServiceApiResponse(
+    Long apiId,
+    Long serviceId,
+    String apiPath,
+    String apiMethod,
+    String apiName,
+    String description,
+    Boolean isActive,
+    LocalDateTime createdAt,
+    LocalDateTime updatedAt
+) {
+
+    public static ServiceApiResponse from(SnpServiceApi a) {
+        return new ServiceApiResponse(
+            a.getApiId(),
+            a.getService().getServiceId(),
+            a.getApiPath(),
+            a.getApiMethod(),
+            a.getApiName(),
+            a.getDescription(),
+            a.getIsActive(),
+            a.getCreatedAt(),
+            a.getUpdatedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/service/dto/ServiceResponse.java b/src/main/java/com/gcsc/connection/service/dto/ServiceResponse.java
new file mode 100644
index 0000000..ba037bb
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/dto/ServiceResponse.java
@@ -0,0 +1,40 @@
+package com.gcsc.connection.service.dto;
+
+import com.gcsc.connection.service.entity.SnpService;
+
+import java.time.LocalDateTime;
+
+public record ServiceResponse(
+    Long serviceId,
+    String serviceCode,
+    String serviceName,
+    String serviceUrl,
+    String description,
+    String healthCheckUrl,
+    Integer healthCheckInterval,
+    String healthStatus,
+    LocalDateTime healthCheckedAt,
+    Integer healthResponseTime,
+    Boolean isActive,
+    LocalDateTime createdAt,
+    LocalDateTime updatedAt
+) {
+
+    public static ServiceResponse from(SnpService s) {
+        return new ServiceResponse(
+            s.getServiceId(),
+            s.getServiceCode(),
+            s.getServiceName(),
+            s.getServiceUrl(),
+            s.getDescription(),
+            s.getHealthCheckUrl(),
+            s.getHealthCheckInterval(),
+            s.getHealthStatus().name(),
+            s.getHealthCheckedAt(),
+            s.getHealthResponseTime(),
+            s.getIsActive(),
+            s.getCreatedAt(),
+            s.getUpdatedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/service/dto/UpdateServiceRequest.java b/src/main/java/com/gcsc/connection/service/dto/UpdateServiceRequest.java
new file mode 100644
index 0000000..ac753a1
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/dto/UpdateServiceRequest.java
@@ -0,0 +1,11 @@
+package com.gcsc.connection.service.dto;
+
+public record UpdateServiceRequest(
+    String serviceName,
+    String serviceUrl,
+    String description,
+    String healthCheckUrl,
+    Integer healthCheckInterval,
+    Boolean isActive
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/service/entity/ServiceStatus.java b/src/main/java/com/gcsc/connection/service/entity/ServiceStatus.java
new file mode 100644
index 0000000..dfc04ca
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/entity/ServiceStatus.java
@@ -0,0 +1,7 @@
+package com.gcsc.connection.service.entity;
+
+public enum ServiceStatus {
+    UP,
+    DOWN,
+    UNKNOWN
+}
diff --git a/src/main/java/com/gcsc/connection/service/entity/SnpService.java b/src/main/java/com/gcsc/connection/service/entity/SnpService.java
new file mode 100644
index 0000000..55a13b6
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/entity/SnpService.java
@@ -0,0 +1,89 @@
+package com.gcsc.connection.service.entity;
+
+import com.gcsc.connection.common.entity.BaseEntity;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_service", schema = "common")
+public class SnpService extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "service_id")
+    private Long serviceId;
+
+    @Column(name = "service_code", length = 50, nullable = false, unique = true)
+    private String serviceCode;
+
+    @Column(name = "service_name", length = 200, nullable = false)
+    private String serviceName;
+
+    @Column(name = "service_url", length = 500)
+    private String serviceUrl;
+
+    @Column(name = "description", columnDefinition = "TEXT")
+    private String description;
+
+    @Column(name = "health_check_url", length = 500)
+    private String healthCheckUrl;
+
+    @Column(name = "health_check_interval", nullable = false)
+    private Integer healthCheckInterval = 30;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "health_status", length = 10, nullable = false)
+    private ServiceStatus healthStatus = ServiceStatus.UNKNOWN;
+
+    @Column(name = "health_checked_at")
+    private LocalDateTime healthCheckedAt;
+
+    @Column(name = "health_response_time")
+    private Integer healthResponseTime;
+
+    @Column(name = "is_active", nullable = false)
+    private Boolean isActive = true;
+
+    @Builder
+    public SnpService(String serviceCode, String serviceName, String serviceUrl,
+                      String description, String healthCheckUrl, Integer healthCheckInterval,
+                      ServiceStatus healthStatus, Boolean isActive) {
+        this.serviceCode = serviceCode;
+        this.serviceName = serviceName;
+        this.serviceUrl = serviceUrl;
+        this.description = description;
+        this.healthCheckUrl = healthCheckUrl;
+        this.healthCheckInterval = healthCheckInterval != null ? healthCheckInterval : 30;
+        this.healthStatus = healthStatus != null ? healthStatus : ServiceStatus.UNKNOWN;
+        this.isActive = isActive != null ? isActive : true;
+    }
+
+    public void update(String serviceName, String serviceUrl, String description,
+                       String healthCheckUrl, Integer healthCheckInterval, Boolean isActive) {
+        if (serviceName != null) this.serviceName = serviceName;
+        if (serviceUrl != null) this.serviceUrl = serviceUrl;
+        if (description != null) this.description = description;
+        if (healthCheckUrl != null) this.healthCheckUrl = healthCheckUrl;
+        if (healthCheckInterval != null) this.healthCheckInterval = healthCheckInterval;
+        if (isActive != null) this.isActive = isActive;
+    }
+
+    public void updateHealthStatus(ServiceStatus status, Integer responseTime) {
+        this.healthStatus = status;
+        this.healthResponseTime = responseTime;
+        this.healthCheckedAt = LocalDateTime.now();
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/service/entity/SnpServiceApi.java b/src/main/java/com/gcsc/connection/service/entity/SnpServiceApi.java
new file mode 100644
index 0000000..0e0e174
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/entity/SnpServiceApi.java
@@ -0,0 +1,67 @@
+package com.gcsc.connection.service.entity;
+
+import com.gcsc.connection.common.entity.BaseEntity;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import jakarta.persistence.UniqueConstraint;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_service_api", schema = "common",
+    uniqueConstraints = @UniqueConstraint(columnNames = {"service_id", "api_path", "api_method"}))
+public class SnpServiceApi extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "api_id")
+    private Long apiId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "service_id", nullable = false)
+    private SnpService service;
+
+    @Column(name = "api_path", length = 500, nullable = false)
+    private String apiPath;
+
+    @Column(name = "api_method", length = 10, nullable = false)
+    private String apiMethod;
+
+    @Column(name = "api_name", length = 200, nullable = false)
+    private String apiName;
+
+    @Column(name = "description", columnDefinition = "TEXT")
+    private String description;
+
+    @Column(name = "is_active", nullable = false)
+    private Boolean isActive = true;
+
+    @Builder
+    public SnpServiceApi(SnpService service, String apiPath, String apiMethod, String apiName,
+                         String description, Boolean isActive) {
+        this.service = service;
+        this.apiPath = apiPath;
+        this.apiMethod = apiMethod;
+        this.apiName = apiName;
+        this.description = description;
+        this.isActive = isActive != null ? isActive : true;
+    }
+
+    public void update(String apiPath, String apiMethod, String apiName, String description, Boolean isActive) {
+        if (apiPath != null) this.apiPath = apiPath;
+        if (apiMethod != null) this.apiMethod = apiMethod;
+        if (apiName != null) this.apiName = apiName;
+        if (description != null) this.description = description;
+        if (isActive != null) this.isActive = isActive;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/service/repository/SnpServiceApiRepository.java b/src/main/java/com/gcsc/connection/service/repository/SnpServiceApiRepository.java
new file mode 100644
index 0000000..f4f0025
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/repository/SnpServiceApiRepository.java
@@ -0,0 +1,18 @@
+package com.gcsc.connection.service.repository;
+
+import com.gcsc.connection.service.entity.SnpService;
+import com.gcsc.connection.service.entity.SnpServiceApi;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface SnpServiceApiRepository extends JpaRepository<SnpServiceApi, Long> {
+
+    List<SnpServiceApi> findByService(SnpService service);
+
+    List<SnpServiceApi> findByServiceServiceId(Long serviceId);
+
+    Optional<SnpServiceApi> findByServiceServiceIdAndApiPathAndApiMethod(
+        Long serviceId, String apiPath, String apiMethod);
+}
diff --git a/src/main/java/com/gcsc/connection/service/repository/SnpServiceRepository.java b/src/main/java/com/gcsc/connection/service/repository/SnpServiceRepository.java
new file mode 100644
index 0000000..9669b9f
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/repository/SnpServiceRepository.java
@@ -0,0 +1,16 @@
+package com.gcsc.connection.service.repository;
+
+import com.gcsc.connection.service.entity.SnpService;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface SnpServiceRepository extends JpaRepository<SnpService, Long> {
+
+    Optional<SnpService> findByServiceCode(String serviceCode);
+
+    boolean existsByServiceCode(String serviceCode);
+
+    List<SnpService> findByIsActiveTrue();
+}
diff --git a/src/main/java/com/gcsc/connection/service/service/ServiceManagementService.java b/src/main/java/com/gcsc/connection/service/service/ServiceManagementService.java
new file mode 100644
index 0000000..817d145
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/service/service/ServiceManagementService.java
@@ -0,0 +1,112 @@
+package com.gcsc.connection.service.service;
+
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.service.dto.CreateServiceApiRequest;
+import com.gcsc.connection.service.dto.CreateServiceRequest;
+import com.gcsc.connection.service.dto.ServiceApiResponse;
+import com.gcsc.connection.service.dto.ServiceResponse;
+import com.gcsc.connection.service.dto.UpdateServiceRequest;
+import com.gcsc.connection.service.entity.SnpService;
+import com.gcsc.connection.service.entity.SnpServiceApi;
+import com.gcsc.connection.service.repository.SnpServiceApiRepository;
+import com.gcsc.connection.service.repository.SnpServiceRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class ServiceManagementService {
+
+    private final SnpServiceRepository snpServiceRepository;
+    private final SnpServiceApiRepository snpServiceApiRepository;
+
+    /**
+     * 전체 서비스 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<ServiceResponse> getServices() {
+        return snpServiceRepository.findAll().stream()
+            .map(ServiceResponse::from)
+            .toList();
+    }
+
+    /**
+     * 서비스 생성
+     */
+    @Transactional
+    public ServiceResponse createService(CreateServiceRequest request) {
+        if (snpServiceRepository.existsByServiceCode(request.serviceCode())) {
+            throw new BusinessException(ErrorCode.SERVICE_CODE_DUPLICATE);
+        }
+
+        SnpService service = SnpService.builder()
+            .serviceCode(request.serviceCode())
+            .serviceName(request.serviceName())
+            .serviceUrl(request.serviceUrl())
+            .description(request.description())
+            .healthCheckUrl(request.healthCheckUrl())
+            .healthCheckInterval(request.healthCheckInterval())
+            .build();
+
+        SnpService saved = snpServiceRepository.save(service);
+        log.info("서비스 생성 완료: {}", saved.getServiceCode());
+        return ServiceResponse.from(saved);
+    }
+
+    /**
+     * 서비스 수정
+     */
+    @Transactional
+    public ServiceResponse updateService(Long id, UpdateServiceRequest request) {
+        SnpService service = snpServiceRepository.findById(id)
+            .orElseThrow(() -> new BusinessException(ErrorCode.SERVICE_NOT_FOUND));
+
+        service.update(
+            request.serviceName(), request.serviceUrl(), request.description(),
+            request.healthCheckUrl(), request.healthCheckInterval(), request.isActive()
+        );
+
+        log.info("서비스 수정 완료: {}", service.getServiceCode());
+        return ServiceResponse.from(service);
+    }
+
+    /**
+     * 서비스 API 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<ServiceApiResponse> getServiceApis(Long serviceId) {
+        snpServiceRepository.findById(serviceId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.SERVICE_NOT_FOUND));
+
+        return snpServiceApiRepository.findByServiceServiceId(serviceId).stream()
+            .map(ServiceApiResponse::from)
+            .toList();
+    }
+
+    /**
+     * 서비스 API 생성
+     */
+    @Transactional
+    public ServiceApiResponse createServiceApi(Long serviceId, CreateServiceApiRequest request) {
+        SnpService service = snpServiceRepository.findById(serviceId)
+            .orElseThrow(() -> new BusinessException(ErrorCode.SERVICE_NOT_FOUND));
+
+        SnpServiceApi api = SnpServiceApi.builder()
+            .service(service)
+            .apiPath(request.apiPath())
+            .apiMethod(request.apiMethod())
+            .apiName(request.apiName())
+            .description(request.description())
+            .build();
+
+        SnpServiceApi saved = snpServiceApiRepository.save(api);
+        log.info("서비스 API 생성 완료: {} {}", saved.getApiMethod(), saved.getApiPath());
+        return ServiceApiResponse.from(saved);
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/tenant/controller/TenantController.java b/src/main/java/com/gcsc/connection/tenant/controller/TenantController.java
new file mode 100644
index 0000000..bb401d1
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/tenant/controller/TenantController.java
@@ -0,0 +1,64 @@
+package com.gcsc.connection.tenant.controller;
+
+import com.gcsc.connection.common.dto.ApiResponse;
+import com.gcsc.connection.tenant.dto.CreateTenantRequest;
+import com.gcsc.connection.tenant.dto.TenantResponse;
+import com.gcsc.connection.tenant.dto.UpdateTenantRequest;
+import com.gcsc.connection.tenant.service.TenantService;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 테넌트 관리 API
+ */
+@RestController
+@RequestMapping("/api/tenants")
+@RequiredArgsConstructor
+public class TenantController {
+
+    private final TenantService tenantService;
+
+    /**
+     * 전체 테넌트 목록 조회
+     */
+    @GetMapping
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<List<TenantResponse>>> getTenants() {
+        List<TenantResponse> tenants = tenantService.getTenants();
+        return ResponseEntity.ok(ApiResponse.ok(tenants));
+    }
+
+    /**
+     * 테넌트 생성
+     */
+    @PostMapping
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<TenantResponse>> createTenant(
+            @RequestBody @Valid CreateTenantRequest request) {
+        TenantResponse tenant = tenantService.createTenant(request);
+        return ResponseEntity.ok(ApiResponse.ok(tenant));
+    }
+
+    /**
+     * 테넌트 수정
+     */
+    @PutMapping("/{id}")
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<TenantResponse>> updateTenant(
+            @PathVariable Long id,
+            @RequestBody @Valid UpdateTenantRequest request) {
+        TenantResponse tenant = tenantService.updateTenant(id, request);
+        return ResponseEntity.ok(ApiResponse.ok(tenant));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/tenant/dto/CreateTenantRequest.java b/src/main/java/com/gcsc/connection/tenant/dto/CreateTenantRequest.java
new file mode 100644
index 0000000..c6aa9a0
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/tenant/dto/CreateTenantRequest.java
@@ -0,0 +1,10 @@
+package com.gcsc.connection.tenant.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record CreateTenantRequest(
+    @NotBlank String tenantCode,
+    @NotBlank String tenantName,
+    String description
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/tenant/dto/TenantResponse.java b/src/main/java/com/gcsc/connection/tenant/dto/TenantResponse.java
new file mode 100644
index 0000000..912af80
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/tenant/dto/TenantResponse.java
@@ -0,0 +1,28 @@
+package com.gcsc.connection.tenant.dto;
+
+import com.gcsc.connection.tenant.entity.SnpTenant;
+
+import java.time.LocalDateTime;
+
+public record TenantResponse(
+    Long tenantId,
+    String tenantCode,
+    String tenantName,
+    String description,
+    Boolean isActive,
+    LocalDateTime createdAt,
+    LocalDateTime updatedAt
+) {
+
+    public static TenantResponse from(SnpTenant t) {
+        return new TenantResponse(
+            t.getTenantId(),
+            t.getTenantCode(),
+            t.getTenantName(),
+            t.getDescription(),
+            t.getIsActive(),
+            t.getCreatedAt(),
+            t.getUpdatedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/tenant/dto/UpdateTenantRequest.java b/src/main/java/com/gcsc/connection/tenant/dto/UpdateTenantRequest.java
new file mode 100644
index 0000000..694837f
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/tenant/dto/UpdateTenantRequest.java
@@ -0,0 +1,10 @@
+package com.gcsc.connection.tenant.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record UpdateTenantRequest(
+    @NotBlank String tenantName,
+    String description,
+    Boolean isActive
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/tenant/entity/SnpTenant.java b/src/main/java/com/gcsc/connection/tenant/entity/SnpTenant.java
new file mode 100644
index 0000000..affdb3b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/tenant/entity/SnpTenant.java
@@ -0,0 +1,50 @@
+package com.gcsc.connection.tenant.entity;
+
+import com.gcsc.connection.common.entity.BaseEntity;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_tenant", schema = "common")
+public class SnpTenant extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "tenant_id")
+    private Long tenantId;
+
+    @Column(name = "tenant_code", length = 50, nullable = false, unique = true)
+    private String tenantCode;
+
+    @Column(name = "tenant_name", length = 200, nullable = false)
+    private String tenantName;
+
+    @Column(name = "description", columnDefinition = "TEXT")
+    private String description;
+
+    @Column(name = "is_active", nullable = false)
+    private Boolean isActive = true;
+
+    @Builder
+    public SnpTenant(String tenantCode, String tenantName, String description, Boolean isActive) {
+        this.tenantCode = tenantCode;
+        this.tenantName = tenantName;
+        this.description = description;
+        this.isActive = isActive != null ? isActive : true;
+    }
+
+    public void update(String tenantName, String description, Boolean isActive) {
+        this.tenantName = tenantName;
+        this.description = description;
+        if (isActive != null) this.isActive = isActive;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/tenant/repository/SnpTenantRepository.java b/src/main/java/com/gcsc/connection/tenant/repository/SnpTenantRepository.java
new file mode 100644
index 0000000..eb95e13
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/tenant/repository/SnpTenantRepository.java
@@ -0,0 +1,13 @@
+package com.gcsc.connection.tenant.repository;
+
+import com.gcsc.connection.tenant.entity.SnpTenant;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface SnpTenantRepository extends JpaRepository<SnpTenant, Long> {
+
+    Optional<SnpTenant> findByTenantCode(String tenantCode);
+
+    boolean existsByTenantCode(String tenantCode);
+}
diff --git a/src/main/java/com/gcsc/connection/tenant/service/TenantService.java b/src/main/java/com/gcsc/connection/tenant/service/TenantService.java
new file mode 100644
index 0000000..2806dd4
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/tenant/service/TenantService.java
@@ -0,0 +1,66 @@
+package com.gcsc.connection.tenant.service;
+
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.tenant.dto.CreateTenantRequest;
+import com.gcsc.connection.tenant.dto.TenantResponse;
+import com.gcsc.connection.tenant.dto.UpdateTenantRequest;
+import com.gcsc.connection.tenant.entity.SnpTenant;
+import com.gcsc.connection.tenant.repository.SnpTenantRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class TenantService {
+
+    private final SnpTenantRepository snpTenantRepository;
+
+    /**
+     * 전체 테넌트 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<TenantResponse> getTenants() {
+        return snpTenantRepository.findAll().stream()
+            .map(TenantResponse::from)
+            .toList();
+    }
+
+    /**
+     * 테넌트 생성
+     */
+    @Transactional
+    public TenantResponse createTenant(CreateTenantRequest request) {
+        if (snpTenantRepository.existsByTenantCode(request.tenantCode())) {
+            throw new BusinessException(ErrorCode.TENANT_CODE_DUPLICATE);
+        }
+
+        SnpTenant tenant = SnpTenant.builder()
+            .tenantCode(request.tenantCode())
+            .tenantName(request.tenantName())
+            .description(request.description())
+            .build();
+
+        SnpTenant saved = snpTenantRepository.save(tenant);
+        log.info("테넌트 생성 완료: {}", saved.getTenantCode());
+        return TenantResponse.from(saved);
+    }
+
+    /**
+     * 테넌트 수정
+     */
+    @Transactional
+    public TenantResponse updateTenant(Long id, UpdateTenantRequest request) {
+        SnpTenant tenant = snpTenantRepository.findById(id)
+            .orElseThrow(() -> new BusinessException(ErrorCode.TENANT_NOT_FOUND));
+
+        tenant.update(request.tenantName(), request.description(), request.isActive());
+        log.info("테넌트 수정 완료: {}", tenant.getTenantCode());
+        return TenantResponse.from(tenant);
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/user/controller/UserController.java b/src/main/java/com/gcsc/connection/user/controller/UserController.java
new file mode 100644
index 0000000..bee9496
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/controller/UserController.java
@@ -0,0 +1,107 @@
+package com.gcsc.connection.user.controller;
+
+import com.gcsc.connection.common.dto.ApiResponse;
+import com.gcsc.connection.user.dto.CreateUserRequest;
+import com.gcsc.connection.user.dto.UpdateUserRequest;
+import com.gcsc.connection.user.dto.UserResponse;
+import com.gcsc.connection.user.service.UserService;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 사용자 관리 API
+ */
+@RestController
+@RequestMapping("/api/users")
+@RequiredArgsConstructor
+public class UserController {
+
+    private final UserService userService;
+
+    /**
+     * 전체 사용자 목록 조회
+     */
+    @GetMapping
+    @PreAuthorize("hasAnyRole('ADMIN','MANAGER')")
+    public ResponseEntity<ApiResponse<List<UserResponse>>> getUsers() {
+        List<UserResponse> users = userService.getUsers();
+        return ResponseEntity.ok(ApiResponse.ok(users));
+    }
+
+    /**
+     * 사용자 생성
+     */
+    @PostMapping
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<UserResponse>> createUser(
+            @RequestBody @Valid CreateUserRequest request) {
+        UserResponse user = userService.createUser(request);
+        return ResponseEntity.ok(ApiResponse.ok(user));
+    }
+
+    /**
+     * 사용자 단건 조회 (ADMIN/MANAGER 또는 본인)
+     */
+    @GetMapping("/{id}")
+    @PreAuthorize("hasAnyRole('ADMIN','MANAGER')")
+    public ResponseEntity<ApiResponse<UserResponse>> getUser(@PathVariable Long id) {
+        String currentUserId = SecurityContextHolder.getContext().getAuthentication().getName();
+        if (!isAdminOrManager() && !currentUserId.equals(String.valueOf(id))) {
+            throw new AccessDeniedException("접근 권한이 없습니다");
+        }
+        UserResponse user = userService.getUser(id);
+        return ResponseEntity.ok(ApiResponse.ok(user));
+    }
+
+    /**
+     * 사용자 수정 (ADMIN은 모든 사용자, 본인은 자기 정보만)
+     */
+    @PutMapping("/{id}")
+    public ResponseEntity<ApiResponse<UserResponse>> updateUser(
+            @PathVariable Long id,
+            @RequestBody @Valid UpdateUserRequest request) {
+        String currentUserId = SecurityContextHolder.getContext().getAuthentication().getName();
+        if (!isAdmin() && !currentUserId.equals(String.valueOf(id))) {
+            throw new AccessDeniedException("접근 권한이 없습니다");
+        }
+        UserResponse user = userService.updateUser(id, request);
+        return ResponseEntity.ok(ApiResponse.ok(user));
+    }
+
+    /**
+     * 사용자 비활성화 (소프트 삭제)
+     */
+    @DeleteMapping("/{id}")
+    @PreAuthorize("hasRole('ADMIN')")
+    public ResponseEntity<ApiResponse<Void>> deactivateUser(@PathVariable Long id) {
+        userService.deactivateUser(id);
+        return ResponseEntity.ok(ApiResponse.ok(null, "사용자가 비활성화되었습니다"));
+    }
+
+    private boolean isAdmin() {
+        return SecurityContextHolder.getContext().getAuthentication()
+            .getAuthorities().stream()
+            .anyMatch(a -> a.getAuthority().equals("ROLE_ADMIN"));
+    }
+
+    private boolean isAdminOrManager() {
+        return SecurityContextHolder.getContext().getAuthentication()
+            .getAuthorities().stream()
+            .anyMatch(a -> a.getAuthority().equals("ROLE_ADMIN")
+                || a.getAuthority().equals("ROLE_MANAGER"));
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/user/dto/CreateUserRequest.java b/src/main/java/com/gcsc/connection/user/dto/CreateUserRequest.java
new file mode 100644
index 0000000..ec4ba0e
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/dto/CreateUserRequest.java
@@ -0,0 +1,13 @@
+package com.gcsc.connection.user.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record CreateUserRequest(
+    Long tenantId,
+    @NotBlank String loginId,
+    @NotBlank String password,
+    @NotBlank String userName,
+    String email,
+    @NotBlank String role
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/user/dto/UpdateUserRequest.java b/src/main/java/com/gcsc/connection/user/dto/UpdateUserRequest.java
new file mode 100644
index 0000000..c53fe5f
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/dto/UpdateUserRequest.java
@@ -0,0 +1,11 @@
+package com.gcsc.connection.user.dto;
+
+public record UpdateUserRequest(
+    Long tenantId,
+    String userName,
+    String email,
+    String role,
+    String password,
+    Boolean isActive
+) {
+}
diff --git a/src/main/java/com/gcsc/connection/user/dto/UserResponse.java b/src/main/java/com/gcsc/connection/user/dto/UserResponse.java
new file mode 100644
index 0000000..10753b5
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/dto/UserResponse.java
@@ -0,0 +1,34 @@
+package com.gcsc.connection.user.dto;
+
+import com.gcsc.connection.user.entity.SnpUser;
+
+import java.time.LocalDateTime;
+
+public record UserResponse(
+    Long userId,
+    Long tenantId,
+    String tenantName,
+    String loginId,
+    String userName,
+    String email,
+    String role,
+    Boolean isActive,
+    LocalDateTime lastLoginAt,
+    LocalDateTime createdAt
+) {
+
+    public static UserResponse from(SnpUser u) {
+        return new UserResponse(
+            u.getUserId(),
+            u.getTenant() != null ? u.getTenant().getTenantId() : null,
+            u.getTenant() != null ? u.getTenant().getTenantName() : null,
+            u.getLoginId(),
+            u.getUserName(),
+            u.getEmail(),
+            u.getRole().name(),
+            u.getIsActive(),
+            u.getLastLoginAt(),
+            u.getCreatedAt()
+        );
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/user/entity/SnpUser.java b/src/main/java/com/gcsc/connection/user/entity/SnpUser.java
new file mode 100644
index 0000000..59e65d7
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/entity/SnpUser.java
@@ -0,0 +1,90 @@
+package com.gcsc.connection.user.entity;
+
+import com.gcsc.connection.common.entity.BaseEntity;
+import com.gcsc.connection.tenant.entity.SnpTenant;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Getter
+@NoArgsConstructor(access = lombok.AccessLevel.PROTECTED)
+@Entity
+@Table(name = "snp_user", schema = "common")
+public class SnpUser extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "user_id")
+    private Long userId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "tenant_id")
+    private SnpTenant tenant;
+
+    @Column(name = "login_id", length = 100, nullable = false, unique = true)
+    private String loginId;
+
+    @Column(name = "password_hash", length = 255, nullable = false)
+    private String passwordHash;
+
+    @Column(name = "user_name", length = 100, nullable = false)
+    private String userName;
+
+    @Column(name = "email", length = 200)
+    private String email;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "role", length = 20, nullable = false)
+    private UserRole role = UserRole.USER;
+
+    @Column(name = "is_active", nullable = false)
+    private Boolean isActive = true;
+
+    @Column(name = "last_login_at")
+    private LocalDateTime lastLoginAt;
+
+    @Builder
+    public SnpUser(SnpTenant tenant, String loginId, String passwordHash, String userName,
+                   String email, UserRole role, Boolean isActive) {
+        this.tenant = tenant;
+        this.loginId = loginId;
+        this.passwordHash = passwordHash;
+        this.userName = userName;
+        this.email = email;
+        this.role = role != null ? role : UserRole.USER;
+        this.isActive = isActive != null ? isActive : true;
+    }
+
+    public void updateLastLoginAt() {
+        this.lastLoginAt = LocalDateTime.now();
+    }
+
+    public void update(SnpTenant tenant, String userName, String email, UserRole role, Boolean isActive) {
+        if (tenant != null) this.tenant = tenant;
+        if (userName != null) this.userName = userName;
+        if (email != null) this.email = email;
+        if (role != null) this.role = role;
+        if (isActive != null) this.isActive = isActive;
+    }
+
+    public void updatePassword(String passwordHash) {
+        this.passwordHash = passwordHash;
+    }
+
+    public void deactivate() {
+        this.isActive = false;
+    }
+}
diff --git a/src/main/java/com/gcsc/connection/user/entity/UserRole.java b/src/main/java/com/gcsc/connection/user/entity/UserRole.java
new file mode 100644
index 0000000..9fc9a9b
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/entity/UserRole.java
@@ -0,0 +1,8 @@
+package com.gcsc.connection.user.entity;
+
+public enum UserRole {
+    ADMIN,
+    MANAGER,
+    USER,
+    VIEWER
+}
diff --git a/src/main/java/com/gcsc/connection/user/repository/SnpUserRepository.java b/src/main/java/com/gcsc/connection/user/repository/SnpUserRepository.java
new file mode 100644
index 0000000..6802372
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/repository/SnpUserRepository.java
@@ -0,0 +1,13 @@
+package com.gcsc.connection.user.repository;
+
+import com.gcsc.connection.user.entity.SnpUser;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface SnpUserRepository extends JpaRepository<SnpUser, Long> {
+
+    Optional<SnpUser> findByLoginId(String loginId);
+
+    boolean existsByLoginId(String loginId);
+}
diff --git a/src/main/java/com/gcsc/connection/user/service/UserService.java b/src/main/java/com/gcsc/connection/user/service/UserService.java
new file mode 100644
index 0000000..cd4c637
--- /dev/null
+++ b/src/main/java/com/gcsc/connection/user/service/UserService.java
@@ -0,0 +1,114 @@
+package com.gcsc.connection.user.service;
+
+import com.gcsc.connection.common.exception.BusinessException;
+import com.gcsc.connection.common.exception.ErrorCode;
+import com.gcsc.connection.tenant.entity.SnpTenant;
+import com.gcsc.connection.tenant.repository.SnpTenantRepository;
+import com.gcsc.connection.user.dto.CreateUserRequest;
+import com.gcsc.connection.user.dto.UpdateUserRequest;
+import com.gcsc.connection.user.dto.UserResponse;
+import com.gcsc.connection.user.entity.SnpUser;
+import com.gcsc.connection.user.entity.UserRole;
+import com.gcsc.connection.user.repository.SnpUserRepository;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class UserService {
+
+    private final SnpUserRepository snpUserRepository;
+    private final SnpTenantRepository snpTenantRepository;
+    private final PasswordEncoder passwordEncoder;
+
+    /**
+     * 전체 사용자 목록 조회
+     */
+    @Transactional(readOnly = true)
+    public List<UserResponse> getUsers() {
+        return snpUserRepository.findAll().stream()
+            .map(UserResponse::from)
+            .toList();
+    }
+
+    /**
+     * 사용자 단건 조회
+     */
+    @Transactional(readOnly = true)
+    public UserResponse getUser(Long id) {
+        SnpUser user = snpUserRepository.findById(id)
+            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+        return UserResponse.from(user);
+    }
+
+    /**
+     * 사용자 생성
+     */
+    @Transactional
+    public UserResponse createUser(CreateUserRequest request) {
+        if (snpUserRepository.existsByLoginId(request.loginId())) {
+            throw new BusinessException(ErrorCode.USER_LOGIN_ID_DUPLICATE);
+        }
+
+        SnpTenant tenant = null;
+        if (request.tenantId() != null) {
+            tenant = snpTenantRepository.findById(request.tenantId())
+                .orElseThrow(() -> new BusinessException(ErrorCode.TENANT_NOT_FOUND));
+        }
+
+        SnpUser user = SnpUser.builder()
+            .tenant(tenant)
+            .loginId(request.loginId())
+            .passwordHash(passwordEncoder.encode(request.password()))
+            .userName(request.userName())
+            .email(request.email())
+            .role(UserRole.valueOf(request.role()))
+            .build();
+
+        SnpUser saved = snpUserRepository.save(user);
+        log.info("사용자 생성 완료: {}", saved.getLoginId());
+        return UserResponse.from(saved);
+    }
+
+    /**
+     * 사용자 수정
+     */
+    @Transactional
+    public UserResponse updateUser(Long id, UpdateUserRequest request) {
+        SnpUser user = snpUserRepository.findById(id)
+            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+
+        SnpTenant tenant = null;
+        if (request.tenantId() != null) {
+            tenant = snpTenantRepository.findById(request.tenantId())
+                .orElseThrow(() -> new BusinessException(ErrorCode.TENANT_NOT_FOUND));
+        }
+
+        UserRole role = request.role() != null ? UserRole.valueOf(request.role()) : null;
+        user.update(tenant, request.userName(), request.email(), role, request.isActive());
+
+        if (request.password() != null && !request.password().isBlank()) {
+            user.updatePassword(passwordEncoder.encode(request.password()));
+        }
+
+        log.info("사용자 수정 완료: {}", user.getLoginId());
+        return UserResponse.from(user);
+    }
+
+    /**
+     * 사용자 비활성화 (소프트 삭제)
+     */
+    @Transactional
+    public void deactivateUser(Long id) {
+        SnpUser user = snpUserRepository.findById(id)
+            .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
+        user.deactivate();
+        log.info("사용자 비활성화 완료: {}", user.getLoginId());
+    }
+}
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index dec39a7..a557cb6 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -4,8 +4,8 @@ spring:
 
   # PostgreSQL Database Configuration
   datasource:
-    url: jdbc:postgresql://211.208.115.83:5432/snpdb
-    username: snp
+    url: jdbc:postgresql://211.208.115.83:5432/snp_connection
+    username: snp_admin
     password: snp#8932
     driver-class-name: org.postgresql.Driver
     hikari:
@@ -16,13 +16,13 @@ spring:
   # JPA Configuration
   jpa:
     hibernate:
-      ddl-auto: validate
+      ddl-auto: update
     show-sql: false
     properties:
       hibernate:
         dialect: org.hibernate.dialect.PostgreSQLDialect
         format_sql: true
-        default_schema: std_snp_connection
+        default_schema: common
 
 # Server Configuration
 server:
@@ -56,5 +56,11 @@ logging:
 app:
   environment: dev
   heartbeat:
-    default-interval-seconds: 30
+    default-interval-seconds: 60
     timeout-seconds: 5
+  jwt:
+    secret: c25wLWNvbm5lY3Rpb24tbW9uaXRvcmluZy1qd3Qtc2VjcmV0LWtleS0yMDI2
+    access-token-expiration: 3600000
+    refresh-token-expiration: 604800000
+  apikey:
+    aes-secret-key: wg9XEbb+7HpqfI3Hs/iDT2JAlay+71+R9PXad35W04c=