docs/RELEASE-NOTES.md

@@ -6,6 +6,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/ko/1.0.0/).
 
 ## [Unreleased]
 
+### 추가
+
+- S&P API HUB SPA 대시보드 (배너, 인기 API, 최신 API, 서비스 카드) (#40)
+- API Hub 서비스 트리 사이드바 레이아웃 (서비스 > 도메인 > API) (#40)
+- 서비스별 API 목록 페이지 (도메인별 그룹) (#40)
+- API 상세 명세 페이지 (#40)
+- 백엔드 카탈로그/최신 API 조회 엔드포인트 (#40)
+
 ## [2026-04-13]
 
 ### 추가

frontend/src/App.tsx

@@ -18,6 +18,10 @@ import UserStatsPage from './pages/statistics/UserStatsPage';
 import ApiStatsPage from './pages/statistics/ApiStatsPage';
 import TenantStatsPage from './pages/statistics/TenantStatsPage';
 import UsageTrendPage from './pages/statistics/UsageTrendPage';
+import ApiHubLayout from './layouts/ApiHubLayout';
+import ApiHubDashboardPage from './pages/apihub/ApiHubDashboardPage';
+import ApiHubServicePage from './pages/apihub/ApiHubServicePage';
+import ApiHubApiDetailPage from './pages/apihub/ApiHubApiDetailPage';
 import NotFoundPage from './pages/NotFoundPage';
 import RoleGuard from './components/RoleGuard';
 
@@ -49,6 +53,11 @@ const App = () => {
             <Route path="/admin/tenants" element={<RoleGuard allowedRoles={['ADMIN']}><TenantsPage /></RoleGuard>} />
             <Route path="*" element={<NotFoundPage />} />
           </Route>
+          <Route element={<ApiHubLayout />}>
+            <Route path="/api-hub" element={<ApiHubDashboardPage />} />
+            <Route path="/api-hub/services/:serviceId" element={<ApiHubServicePage />} />
+            <Route path="/api-hub/services/:serviceId/apis/:apiId" element={<ApiHubApiDetailPage />} />
+          </Route>
         </Routes>
       </AuthProvider>
       </ThemeProvider>

frontend/src/layouts/ApiHubLayout.tsx

@@ -0,0 +1,290 @@
+import { useState, useEffect } from 'react';
+import { Outlet, NavLink, useNavigate, useLocation } from 'react-router-dom';
+import { useAuth } from '../hooks/useAuth';
+import { useTheme } from '../hooks/useTheme';
+import { getCatalog } from '../services/apiHubService';
+import type { ServiceCatalog } from '../types/apihub';
+
+const ROLES = ['ADMIN', 'MANAGER', 'USER'] as const;
+
+const METHOD_BADGE_CLASS: Record<string, string> = {
+  GET: 'bg-green-100 text-green-700 dark:bg-green-900 dark:text-green-300',
+  POST: 'bg-blue-100 text-blue-700 dark:bg-blue-900 dark:text-blue-300',
+  PUT: 'bg-amber-100 text-amber-700 dark:bg-amber-900 dark:text-amber-300',
+  DELETE: 'bg-red-100 text-red-700 dark:bg-red-900 dark:text-red-300',
+};
+
+const getMethodBadgeClass = (method: string): string =>
+  METHOD_BADGE_CLASS[method.toUpperCase()] ??
+  'bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300';
+
+const HEALTH_DOT_CLASS: Record<ServiceCatalog['healthStatus'], string> = {
+  UP: 'bg-green-500',
+  DOWN: 'bg-red-500',
+  UNKNOWN: 'bg-gray-400',
+};
+
+const ApiHubLayout = () => {
+  const { user, setRole } = useAuth();
+  const { theme, toggleTheme } = useTheme();
+  const navigate = useNavigate();
+  const location = useLocation();
+
+  const [catalog, setCatalog] = useState<ServiceCatalog[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [openServices, setOpenServices] = useState<Record<number, boolean>>({});
+  const [openDomains, setOpenDomains] = useState<Record<string, boolean>>({});
+
+  useEffect(() => {
+    getCatalog()
+      .then((res) => {
+        const items = res.data ?? [];
+        setCatalog(items);
+        // Open all service groups and domain groups by default
+        const serviceState: Record<number, boolean> = {};
+        const domainState: Record<string, boolean> = {};
+        items.forEach((svc) => {
+          serviceState[svc.serviceId] = true;
+          svc.domains.forEach((dg) => {
+            domainState[`${svc.serviceId}:${dg.domain}`] = true;
+          });
+        });
+        setOpenServices(serviceState);
+        setOpenDomains(domainState);
+      })
+      .finally(() => setLoading(false));
+  }, []);
+
+  const toggleService = (serviceId: number) => {
+    setOpenServices((prev) => ({ ...prev, [serviceId]: !prev[serviceId] }));
+  };
+
+  const toggleDomain = (key: string) => {
+    setOpenDomains((prev) => ({ ...prev, [key]: !prev[key] }));
+  };
+
+  return (
+    <div className="flex min-h-screen">
+      {/* Sidebar */}
+      <aside className="fixed left-0 top-0 h-screen w-72 bg-gray-900 text-white flex flex-col">
+        {/* Sidebar header */}
+        <div className="flex-shrink-0 border-b border-gray-700">
+          <div className="flex items-center gap-2 px-5 h-16">
+            <svg
+              className="h-5 w-5 text-blue-400 flex-shrink-0"
+              fill="none"
+              viewBox="0 0 24 24"
+              stroke="currentColor"
+            >
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={2}
+                d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"
+              />
+            </svg>
+            <span className="text-base font-bold tracking-wide text-white">S&amp;P API HUB</span>
+          </div>
+          <div className="px-5 pb-3">
+            <button
+              onClick={() => navigate('/dashboard')}
+              className="flex items-center gap-1.5 text-xs text-gray-400 hover:text-white transition-colors"
+            >
+              <svg className="h-3.5 w-3.5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
+              </svg>
+              Back to Dashboard
+            </button>
+          </div>
+        </div>
+
+        {/* Navigation tree */}
+        <nav className="flex-1 overflow-y-auto px-3 py-4 space-y-1">
+          {loading ? (
+            <div className="flex items-center justify-center py-10">
+              <svg
+                className="h-6 w-6 animate-spin text-gray-400"
+                fill="none"
+                viewBox="0 0 24 24"
+              >
+                <circle
+                  className="opacity-25"
+                  cx="12"
+                  cy="12"
+                  r="10"
+                  stroke="currentColor"
+                  strokeWidth="4"
+                />
+                <path
+                  className="opacity-75"
+                  fill="currentColor"
+                  d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z"
+                />
+              </svg>
+            </div>
+          ) : (
+            catalog.map((service) => {
+              const serviceOpen = openServices[service.serviceId] ?? false;
+              const healthDot = HEALTH_DOT_CLASS[service.healthStatus];
+
+              return (
+                <div key={service.serviceId} className="mb-1">
+                  {/* Service group header */}
+                  <div className="flex items-center gap-1">
+                    <button
+                      onClick={() => navigate(`/api-hub/services/${service.serviceId}`)}
+                      className="flex flex-1 min-w-0 items-center gap-2 rounded-l-lg px-3 py-2 text-sm font-semibold text-gray-200 hover:bg-gray-800 hover:text-white transition-colors text-left"
+                    >
+                      <span
+                        className={`h-2 w-2 flex-shrink-0 rounded-full ${healthDot}`}
+                        title={service.healthStatus}
+                      />
+                      <span className="truncate">{service.serviceName}</span>
+                      <span className="ml-auto flex-shrink-0 rounded-full bg-gray-700 px-1.5 py-0.5 text-xs text-gray-300">
+                        {service.apiCount}
+                      </span>
+                    </button>
+                    <button
+                      onClick={() => toggleService(service.serviceId)}
+                      className="flex-shrink-0 rounded-r-lg p-2 text-gray-400 hover:bg-gray-800 hover:text-white transition-colors"
+                      aria-label={serviceOpen ? 'Collapse' : 'Expand'}
+                    >
+                      <svg
+                        className={`h-3.5 w-3.5 transition-transform ${serviceOpen ? 'rotate-90' : ''}`}
+                        fill="none"
+                        viewBox="0 0 24 24"
+                        stroke="currentColor"
+                      >
+                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+                      </svg>
+                    </button>
+                  </div>
+
+                  {/* Domain groups */}
+                  {serviceOpen && (
+                    <div className="ml-3 mt-0.5 space-y-0.5">
+                      {service.domains.map((dg) => {
+                        const domainKey = `${service.serviceId}:${dg.domain}`;
+                        const domainOpen = openDomains[domainKey] ?? false;
+
+                        return (
+                          <div key={dg.domain}>
+                            {/* Domain header */}
+                            <button
+                              onClick={() => toggleDomain(domainKey)}
+                              className="flex w-full items-center gap-1.5 rounded-lg px-2.5 py-1.5 text-xs font-medium text-gray-400 hover:bg-gray-800 hover:text-gray-200 transition-colors"
+                            >
+                              <svg
+                                className={`h-3 w-3 flex-shrink-0 transition-transform ${domainOpen ? 'rotate-90' : ''}`}
+                                fill="none"
+                                viewBox="0 0 24 24"
+                                stroke="currentColor"
+                              >
+                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+                              </svg>
+                              <span className="truncate uppercase tracking-wider">{dg.domain}</span>
+                              <span className="ml-auto flex-shrink-0 text-gray-500">
+                                {dg.apis.length}
+                              </span>
+                            </button>
+
+                            {/* API items */}
+                            {domainOpen && (
+                              <div className="ml-3 mt-0.5 space-y-0.5">
+                                {dg.apis.map((api) => {
+                                  const apiPath = `/api-hub/services/${service.serviceId}/apis/${api.apiId}`;
+                                  const isActive = location.pathname === apiPath;
+
+                                  return (
+                                    <NavLink
+                                      key={api.apiId}
+                                      to={apiPath}
+                                      className={`flex items-center gap-2 rounded-lg px-2.5 py-1.5 text-xs transition-colors ${
+                                        isActive
+                                          ? 'bg-gray-700 text-white'
+                                          : 'text-gray-300 hover:bg-gray-800 hover:text-white'
+                                      }`}
+                                    >
+                                      <span
+                                        className={`flex-shrink-0 rounded px-1 py-0.5 text-[10px] font-bold leading-none ${getMethodBadgeClass(api.apiMethod)}`}
+                                      >
+                                        {api.apiMethod.toUpperCase()}
+                                      </span>
+                                      <span className="truncate">{api.apiName}</span>
+                                    </NavLink>
+                                  );
+                                })}
+                              </div>
+                            )}
+                          </div>
+                        );
+                      })}
+                    </div>
+                  )}
+                </div>
+              );
+            })
+          )}
+        </nav>
+      </aside>
+
+      {/* Main content */}
+      <div className="flex-1 ml-72">
+        {/* Header */}
+        <header className="h-16 bg-white dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700 flex items-center justify-between px-6">
+          <div />
+          <div className="flex items-center gap-4">
+            <button
+              onClick={toggleTheme}
+              className="rounded-lg p-2 text-gray-500 dark:text-gray-400 hover:bg-gray-100 dark:hover:bg-gray-700 transition-colors"
+              title={theme === 'light' ? 'Dark mode' : 'Light mode'}
+            >
+              {theme === 'light' ? (
+                <svg className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                  <path
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    strokeWidth={2}
+                    d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"
+                  />
+                </svg>
+              ) : (
+                <svg className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                  <path
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    strokeWidth={2}
+                    d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z"
+                  />
+                </svg>
+              )}
+            </button>
+            <span className="text-sm text-gray-500 dark:text-gray-400">Role:</span>
+            <div className="flex rounded-lg overflow-hidden border border-gray-300 dark:border-gray-600">
+              {ROLES.map((role) => (
+                <button
+                  key={role}
+                  onClick={() => setRole(role)}
+                  className={`px-3 py-1.5 text-xs font-medium transition-colors ${
+                    user?.role === role
+                      ? 'bg-blue-600 text-white'
+                      : 'bg-white dark:bg-gray-700 text-gray-700 dark:text-gray-300 hover:bg-gray-100 dark:hover:bg-gray-600'
+                  }`}
+                >
+                  {role}
+                </button>
+              ))}
+            </div>
+          </div>
+        </header>
+
+        {/* Content */}
+        <main className="p-6 bg-gray-100 dark:bg-gray-900 min-h-[calc(100vh-4rem)]">
+          <Outlet />
+        </main>
+      </div>
+    </div>
+  );
+};
+
+export default ApiHubLayout;

frontend/src/layouts/MainLayout.tsx

@@ -91,6 +91,21 @@ const MainLayout = () => {
             Dashboard
           </NavLink>
 
+          {/* API Hub */}
+          <NavLink
+            to="/api-hub"
+            className={({ isActive }) =>
+              `flex items-center gap-3 rounded-lg px-3 py-2 mt-4 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="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253" />
+            </svg>
+            API Hub
+          </NavLink>
+
           {/* Nav Groups */}
           {navGroups.map((group) => {
             if (group.adminOnly && user?.role !== 'ADMIN') return null;

frontend/src/pages/apihub/ApiHubApiDetailPage.tsx

@@ -0,0 +1,297 @@
+import { useState, useEffect, useCallback } from 'react';
+import { useParams, useNavigate } from 'react-router-dom';
+import type { ServiceCatalog, ServiceApiItem } from '../../types/apihub';
+import { getCatalog } from '../../services/apiHubService';
+
+const METHOD_COLORS: Record<string, string> = {
+  GET: 'bg-green-100 text-green-700 dark:bg-green-900 dark:text-green-300',
+  POST: 'bg-blue-100 text-blue-700 dark:bg-blue-900 dark:text-blue-300',
+  PUT: 'bg-amber-100 text-amber-700 dark:bg-amber-900 dark:text-amber-300',
+  PATCH: 'bg-amber-100 text-amber-700 dark:bg-amber-900 dark:text-amber-300',
+  DELETE: 'bg-red-100 text-red-700 dark:bg-red-900 dark:text-red-300',
+};
+
+const METHOD_COLORS_LARGE: Record<string, string> = {
+  GET: 'bg-green-500',
+  POST: 'bg-blue-500',
+  PUT: 'bg-amber-500',
+  PATCH: 'bg-amber-500',
+  DELETE: 'bg-red-500',
+};
+
+const formatDateTime = (dateStr: string): string => {
+  const d = new Date(dateStr);
+  const date = `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;
+  const time = `${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`;
+  return `${date} ${time}`;
+};
+
+interface LabelValueRowProps {
+  label: string;
+  value: React.ReactNode;
+}
+
+const LabelValueRow = ({ label, value }: LabelValueRowProps) => (
+  <div className="flex items-start py-3 border-b border-gray-100 dark:border-gray-700 last:border-0">
+    <dt className="w-36 shrink-0 text-sm font-medium text-gray-500 dark:text-gray-400">{label}</dt>
+    <dd className="flex-1 text-sm text-gray-900 dark:text-gray-100">{value}</dd>
+  </div>
+);
+
+const ApiHubApiDetailPage = () => {
+  const { serviceId, apiId } = useParams<{ serviceId: string; apiId: string }>();
+  const navigate = useNavigate();
+  const [api, setApi] = useState<ServiceApiItem | null>(null);
+  const [service, setService] = useState<ServiceCatalog | null>(null);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const fetchData = useCallback(async () => {
+    if (!serviceId || !apiId) return;
+    try {
+      const res = await getCatalog();
+      if (res.success && res.data) {
+        const foundService = res.data.find((s) => s.serviceId === Number(serviceId));
+        if (foundService) {
+          setService(foundService);
+          const foundApi = foundService.domains
+            .flatMap((d) => d.apis)
+            .find((a) => a.apiId === Number(apiId));
+          if (foundApi) {
+            setApi(foundApi);
+          } else {
+            setError('API를 찾을 수 없습니다');
+          }
+        } else {
+          setError('서비스를 찾을 수 없습니다');
+        }
+      } else {
+        setError('API 정보를 불러오지 못했습니다');
+      }
+    } catch {
+      setError('API 정보를 불러오는 중 오류가 발생했습니다');
+    } finally {
+      setIsLoading(false);
+    }
+  }, [serviceId, apiId]);
+
+  useEffect(() => {
+    fetchData();
+  }, [fetchData]);
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center h-64">
+        <div className="text-gray-500 dark:text-gray-400">로딩 중...</div>
+      </div>
+    );
+  }
+
+  if (error || !api) {
+    return (
+      <div>
+        <button
+          onClick={() => navigate(`/api-hub/services/${serviceId}`)}
+          className="text-sm text-blue-600 hover:text-blue-800 dark:text-blue-400 dark:hover:text-blue-300 mb-4 inline-block"
+        >
+          ← 서비스로
+        </button>
+        <div className="text-center py-20 text-gray-500 dark:text-gray-400">
+          {error ?? 'API를 찾을 수 없습니다'}
+        </div>
+      </div>
+    );
+  }
+
+  const domainLabel = api.apiDomain || '기타';
+
+  return (
+    <div>
+      {/* Breadcrumb */}
+      <nav className="flex items-center gap-2 text-sm text-gray-500 dark:text-gray-400 mb-4">
+        <button
+          onClick={() => navigate('/api-hub')}
+          className="hover:text-blue-600 dark:hover:text-blue-400 transition-colors"
+        >
+          API HUB
+        </button>
+        <span>/</span>
+        <button
+          onClick={() => navigate(`/api-hub/services/${serviceId}`)}
+          className="hover:text-blue-600 dark:hover:text-blue-400 transition-colors"
+        >
+          {service?.serviceName ?? `서비스 ${serviceId}`}
+        </button>
+        <span>/</span>
+        <span className="text-gray-700 dark:text-gray-300">{domainLabel}</span>
+        <span>/</span>
+        <span className="text-gray-900 dark:text-gray-100 font-medium truncate max-w-xs">{api.apiName}</span>
+      </nav>
+
+      {/* Header Card */}
+      <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 mb-6 border border-gray-100 dark:border-gray-700">
+        <div className="flex items-start gap-4">
+          <span
+            className={`px-3 py-1.5 rounded text-sm font-bold uppercase text-white shrink-0 ${METHOD_COLORS_LARGE[api.apiMethod] ?? 'bg-gray-500'}`}
+          >
+            {api.apiMethod}
+          </span>
+          <div className="flex-1 min-w-0">
+            <p className="font-mono text-base text-gray-700 dark:text-gray-300 truncate mb-1" title={api.apiPath}>
+              {api.apiPath}
+            </p>
+            <h1 className="text-xl font-bold text-gray-900 dark:text-gray-100">{api.apiName}</h1>
+          </div>
+          <span
+            className={`shrink-0 px-2 py-1 rounded-full text-xs font-medium ${
+              api.isActive
+                ? 'bg-green-100 text-green-700 dark:bg-green-900 dark:text-green-300'
+                : 'bg-gray-100 text-gray-500 dark:bg-gray-700 dark:text-gray-400'
+            }`}
+          >
+            {api.isActive ? '활성' : '비활성'}
+          </span>
+        </div>
+      </div>
+
+      <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
+        {/* 기본 정보 */}
+        <div className="lg:col-span-2">
+          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 mb-6 border border-gray-100 dark:border-gray-700">
+            <h2 className="text-base font-semibold text-gray-900 dark:text-gray-100 mb-4">기본 정보</h2>
+            <dl>
+              <LabelValueRow label="API명" value={api.apiName} />
+              <LabelValueRow
+                label="메서드"
+                value={
+                  <span
+                    className={`px-2 py-0.5 rounded text-xs font-bold uppercase ${METHOD_COLORS[api.apiMethod] ?? 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-300'}`}
+                  >
+                    {api.apiMethod}
+                  </span>
+                }
+              />
+              <LabelValueRow
+                label="경로"
+                value={<span className="font-mono text-sm">{api.apiPath}</span>}
+              />
+              <LabelValueRow
+                label="도메인"
+                value={
+                  api.apiDomain ? (
+                    <span className="px-2 py-0.5 rounded-full bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300 text-xs font-medium">
+                      {api.apiDomain}
+                    </span>
+                  ) : (
+                    <span className="text-gray-400 dark:text-gray-500">-</span>
+                  )
+                }
+              />
+              <LabelValueRow
+                label="섹션"
+                value={
+                  api.apiSection ? (
+                    api.apiSection
+                  ) : (
+                    <span className="text-gray-400 dark:text-gray-500">-</span>
+                  )
+                }
+              />
+              <LabelValueRow
+                label="활성 상태"
+                value={
+                  <span
+                    className={`px-2 py-0.5 rounded-full text-xs font-medium ${
+                      api.isActive
+                        ? 'bg-green-100 text-green-700 dark:bg-green-900 dark:text-green-300'
+                        : 'bg-gray-100 text-gray-500 dark:bg-gray-700 dark:text-gray-400'
+                    }`}
+                  >
+                    {api.isActive ? '활성' : '비활성'}
+                  </span>
+                }
+              />
+              <LabelValueRow label="등록일시" value={formatDateTime(api.createdAt)} />
+            </dl>
+          </div>
+
+          {/* 설명 */}
+          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 mb-6 border border-gray-100 dark:border-gray-700">
+            <h2 className="text-base font-semibold text-gray-900 dark:text-gray-100 mb-4">설명</h2>
+            {api.description ? (
+              <p className="text-sm text-gray-700 dark:text-gray-300 leading-relaxed whitespace-pre-wrap">
+                {api.description}
+              </p>
+            ) : (
+              <p className="text-sm text-gray-400 dark:text-gray-500">설명이 없습니다</p>
+            )}
+          </div>
+
+          {/* 요청 정보 */}
+          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 border border-gray-100 dark:border-gray-700">
+            <h2 className="text-base font-semibold text-gray-900 dark:text-gray-100 mb-4">요청 정보</h2>
+            <div className="flex items-center gap-3 p-3 bg-gray-50 dark:bg-gray-700 rounded-lg">
+              <span
+                className={`px-2 py-1 rounded text-xs font-bold uppercase text-white ${METHOD_COLORS_LARGE[api.apiMethod] ?? 'bg-gray-500'}`}
+              >
+                {api.apiMethod}
+              </span>
+              <span className="font-mono text-sm text-gray-700 dark:text-gray-300 break-all">{api.apiPath}</span>
+            </div>
+            <p className="text-xs text-gray-400 dark:text-gray-500 mt-3">
+              상세 요청/응답 명세는 추후 제공될 예정입니다
+            </p>
+          </div>
+        </div>
+
+        {/* 사이드: 서비스 정보 */}
+        <div>
+          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 border border-gray-100 dark:border-gray-700">
+            <h2 className="text-base font-semibold text-gray-900 dark:text-gray-100 mb-4">서비스 정보</h2>
+            {service ? (
+              <div>
+                <p className="text-sm font-semibold text-gray-900 dark:text-gray-100 mb-1">{service.serviceName}</p>
+                <p className="text-xs text-gray-500 dark:text-gray-400 font-mono mb-3">{service.serviceCode}</p>
+                {service.description && (
+                  <p className="text-xs text-gray-600 dark:text-gray-400 mb-4 leading-relaxed">{service.description}</p>
+                )}
+                <div className="flex items-center gap-2">
+                  <span
+                    className={`w-2 h-2 rounded-full ${
+                      service.healthStatus === 'UP'
+                        ? 'bg-green-500'
+                        : service.healthStatus === 'DOWN'
+                        ? 'bg-red-500'
+                        : 'bg-gray-400'
+                    }`}
+                  />
+                  <span
+                    className={`text-xs font-medium ${
+                      service.healthStatus === 'UP'
+                        ? 'text-green-600 dark:text-green-400'
+                        : service.healthStatus === 'DOWN'
+                        ? 'text-red-600 dark:text-red-400'
+                        : 'text-gray-500 dark:text-gray-400'
+                    }`}
+                  >
+                    {service.healthStatus === 'UP' ? '정상' : service.healthStatus === 'DOWN' ? '중단' : '알 수 없음'}
+                  </span>
+                </div>
+                <button
+                  onClick={() => navigate(`/api-hub/services/${serviceId}`)}
+                  className="mt-4 w-full text-center text-sm text-blue-600 hover:text-blue-800 dark:text-blue-400 dark:hover:text-blue-300 font-medium py-2 border border-blue-200 dark:border-blue-700 rounded-lg hover:bg-blue-50 dark:hover:bg-blue-900/20 transition-colors"
+                >
+                  서비스 API 목록 보기
+                </button>
+              </div>
+            ) : (
+              <p className="text-sm text-gray-400 dark:text-gray-500">서비스 정보를 불러올 수 없습니다</p>
+            )}
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default ApiHubApiDetailPage;

frontend/src/pages/apihub/ApiHubDashboardPage.tsx

@@ -0,0 +1,241 @@
+import { useState, useEffect, useCallback } from 'react';
+import { useNavigate } from 'react-router-dom';
+import type { ServiceCatalog, RecentApi } from '../../types/apihub';
+import type { TopApi } from '../../types/dashboard';
+import { getCatalog, getRecentApis } from '../../services/apiHubService';
+import { getTopApis } from '../../services/dashboardService';
+
+const METHOD_COLORS: Record<string, string> = {
+  GET: 'bg-green-100 text-green-700 dark:bg-green-900 dark:text-green-300',
+  POST: 'bg-blue-100 text-blue-700 dark:bg-blue-900 dark:text-blue-300',
+  PUT: 'bg-amber-100 text-amber-700 dark:bg-amber-900 dark:text-amber-300',
+  PATCH: 'bg-amber-100 text-amber-700 dark:bg-amber-900 dark:text-amber-300',
+  DELETE: 'bg-red-100 text-red-700 dark:bg-red-900 dark:text-red-300',
+};
+
+const HEALTH_DOT: Record<string, string> = {
+  UP: 'bg-green-500',
+  DOWN: 'bg-red-500',
+  UNKNOWN: 'bg-gray-400',
+};
+
+const HEALTH_LABEL: Record<string, string> = {
+  UP: '정상',
+  DOWN: '중단',
+  UNKNOWN: '알 수 없음',
+};
+
+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 =>
+  str.length > max ? str.slice(0, max) + '...' : str;
+
+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 ApiHubDashboardPage = () => {
+  const navigate = useNavigate();
+  const [catalog, setCatalog] = useState<ServiceCatalog[]>([]);
+  const [recentApis, setRecentApis] = useState<RecentApi[]>([]);
+  const [topApis, setTopApis] = useState<TopApi[]>([]);
+  const [searchQuery, setSearchQuery] = useState('');
+  const [isLoading, setIsLoading] = useState(true);
+
+  const fetchAll = useCallback(async () => {
+    try {
+      const [catalogRes, recentRes, topRes] = await Promise.allSettled([
+        getCatalog(),
+        getRecentApis(),
+        getTopApis(5),
+      ]);
+      setCatalog(extractSettled<ServiceCatalog[]>(catalogRes, []));
+      setRecentApis(extractSettled<RecentApi[]>(recentRes, []));
+      setTopApis(extractSettled<TopApi[]>(topRes, []));
+    } finally {
+      setIsLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    fetchAll();
+  }, [fetchAll]);
+
+  const filteredCatalog = catalog.filter((svc) => {
+    if (!searchQuery) return true;
+    const q = searchQuery.toLowerCase();
+    return (
+      svc.serviceName.toLowerCase().includes(q) ||
+      svc.serviceCode.toLowerCase().includes(q) ||
+      (svc.description ?? '').toLowerCase().includes(q)
+    );
+  });
+
+  const filteredRecentApis = recentApis.filter((api) => {
+    if (!searchQuery) return true;
+    const q = searchQuery.toLowerCase();
+    return (
+      api.apiName.toLowerCase().includes(q) ||
+      api.apiPath.toLowerCase().includes(q) ||
+      api.serviceName.toLowerCase().includes(q)
+    );
+  });
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center h-64">
+        <div className="text-gray-500 dark:text-gray-400">로딩 중...</div>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      {/* Hero Banner */}
+      <div className="rounded-xl bg-gradient-to-r from-blue-600 to-indigo-700 dark:from-blue-800 dark:to-indigo-900 p-8 mb-8">
+        <h1 className="text-3xl font-bold text-white mb-2">S&amp;P API HUB</h1>
+        <p className="text-blue-100 mb-6">서비스 API를 탐색하고, 명세를 확인하세요</p>
+        <div className="max-w-xl">
+          <input
+            type="text"
+            placeholder="서비스명, API명, 경로 검색..."
+            value={searchQuery}
+            onChange={(e) => setSearchQuery(e.target.value)}
+            className="w-full px-4 py-3 rounded-lg text-gray-900 bg-white placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-blue-300 shadow"
+          />
+        </div>
+      </div>
+
+      {/* 인기 API 섹션 */}
+      {topApis.length > 0 && (
+        <div className="mb-8">
+          <h2 className="text-xl font-semibold text-gray-900 dark:text-gray-100 mb-4">인기 API</h2>
+          <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-5 gap-4">
+            {topApis.map((api, idx) => (
+              <div
+                key={idx}
+                className="bg-white dark:bg-gray-800 rounded-lg shadow p-4 border border-gray-100 dark:border-gray-700"
+              >
+                <div className="flex items-center gap-2 mb-2">
+                  <span className="text-xs font-bold text-gray-400 dark:text-gray-500">#{idx + 1}</span>
+                  <span className="text-xs px-2 py-0.5 rounded-full bg-blue-100 text-blue-700 dark:bg-blue-900 dark:text-blue-300 font-medium truncate">
+                    {api.serviceName}
+                  </span>
+                </div>
+                <p className="text-sm font-semibold text-gray-900 dark:text-gray-100 truncate mb-3" title={api.apiName}>
+                  {api.apiName}
+                </p>
+                <div className="flex items-center justify-between text-xs text-gray-500 dark:text-gray-400">
+                  <span>{api.count.toLocaleString()} 호출</span>
+                </div>
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {/* 최신 등록 API 섹션 */}
+      <div className="mb-8">
+        <h2 className="text-xl font-semibold text-gray-900 dark:text-gray-100 mb-4">최신 등록 API</h2>
+        {filteredRecentApis.length > 0 ? (
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+            {filteredRecentApis.map((api) => (
+              <div
+                key={api.apiId}
+                className="bg-white dark:bg-gray-800 rounded-lg shadow p-5 border border-gray-100 dark:border-gray-700 cursor-pointer hover:shadow-md hover:border-blue-300 dark:hover:border-blue-600 transition-all"
+                onClick={() => navigate(`/api-hub/services/${api.serviceId}/apis/${api.apiId}`)}
+              >
+                <div className="flex items-center gap-2 mb-2">
+                  <span
+                    className={`px-2 py-0.5 rounded text-xs font-bold uppercase ${METHOD_COLORS[api.apiMethod] ?? 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-300'}`}
+                  >
+                    {api.apiMethod}
+                  </span>
+                  <span className="text-xs px-2 py-0.5 rounded-full bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-300 font-medium">
+                    {api.serviceName}
+                  </span>
+                </div>
+                <p className="text-sm font-semibold text-gray-900 dark:text-gray-100 mb-1 truncate" title={api.apiName}>
+                  {api.apiName}
+                </p>
+                <p className="text-xs text-gray-500 dark:text-gray-400 font-mono mb-2 truncate" title={api.apiPath}>
+                  {api.apiPath}
+                </p>
+                {api.description && (
+                  <p className="text-xs text-gray-500 dark:text-gray-400 mb-3 line-clamp-2">
+                    {truncate(api.description, 80)}
+                  </p>
+                )}
+                <p className="text-xs text-gray-400 dark:text-gray-500">{formatDate(api.createdAt)} 등록</p>
+              </div>
+            ))}
+          </div>
+        ) : (
+          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-8 text-center text-gray-400 dark:text-gray-500">
+            {searchQuery ? '검색 결과가 없습니다' : '등록된 API가 없습니다'}
+          </div>
+        )}
+      </div>
+
+      {/* 서비스 카드 섹션 */}
+      <div>
+        <h2 className="text-xl font-semibold text-gray-900 dark:text-gray-100 mb-4">서비스 목록</h2>
+        {filteredCatalog.length > 0 ? (
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+            {filteredCatalog.map((svc) => (
+              <div
+                key={svc.serviceId}
+                className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 border border-gray-100 dark:border-gray-700 cursor-pointer hover:shadow-md hover:border-blue-300 dark:hover:border-blue-600 transition-all"
+                onClick={() => navigate(`/api-hub/services/${svc.serviceId}`)}
+              >
+                <div className="flex items-start justify-between mb-3">
+                  <div className="flex-1 min-w-0">
+                    <h3 className="text-base font-semibold text-gray-900 dark:text-gray-100 truncate">
+                      {svc.serviceName}
+                    </h3>
+                    <p className="text-xs text-gray-500 dark:text-gray-400 font-mono">{svc.serviceCode}</p>
+                  </div>
+                  <div className="flex items-center gap-1.5 ml-3 shrink-0">
+                    <div className={`w-2.5 h-2.5 rounded-full ${HEALTH_DOT[svc.healthStatus] ?? 'bg-gray-400'}`} />
+                    <span
+                      className={`text-xs font-medium ${
+                        svc.healthStatus === 'UP'
+                          ? 'text-green-600 dark:text-green-400'
+                          : svc.healthStatus === 'DOWN'
+                          ? 'text-red-600 dark:text-red-400'
+                          : 'text-gray-500 dark:text-gray-400'
+                      }`}
+                    >
+                      {HEALTH_LABEL[svc.healthStatus] ?? svc.healthStatus}
+                    </span>
+                  </div>
+                </div>
+                {svc.description && (
+                  <p className="text-sm text-gray-500 dark:text-gray-400 mb-4 line-clamp-2">
+                    {svc.description}
+                  </p>
+                )}
+                <div className="flex items-center gap-4 text-xs text-gray-500 dark:text-gray-400">
+                  <span>API {svc.apiCount}개</span>
+                  <span>도메인 {svc.domains.length}개</span>
+                </div>
+              </div>
+            ))}
+          </div>
+        ) : (
+          <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-8 text-center text-gray-400 dark:text-gray-500">
+            {searchQuery ? '검색 결과가 없습니다' : '등록된 서비스가 없습니다'}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default ApiHubDashboardPage;

frontend/src/pages/apihub/ApiHubServicePage.tsx

@@ -0,0 +1,224 @@
+import { useState, useEffect, useCallback } from 'react';
+import { useParams, useNavigate } from 'react-router-dom';
+import type { ServiceCatalog, ServiceApiItem } from '../../types/apihub';
+import { getCatalog } from '../../services/apiHubService';
+
+const METHOD_COLORS: Record<string, string> = {
+  GET: 'bg-green-100 text-green-700 dark:bg-green-900 dark:text-green-300',
+  POST: 'bg-blue-100 text-blue-700 dark:bg-blue-900 dark:text-blue-300',
+  PUT: 'bg-amber-100 text-amber-700 dark:bg-amber-900 dark:text-amber-300',
+  PATCH: 'bg-amber-100 text-amber-700 dark:bg-amber-900 dark:text-amber-300',
+  DELETE: 'bg-red-100 text-red-700 dark:bg-red-900 dark:text-red-300',
+};
+
+const HEALTH_DOT: Record<string, string> = {
+  UP: 'bg-green-500',
+  DOWN: 'bg-red-500',
+  UNKNOWN: 'bg-gray-400',
+};
+
+const HEALTH_BADGE: Record<string, string> = {
+  UP: 'bg-green-100 text-green-700 dark:bg-green-900 dark:text-green-300',
+  DOWN: 'bg-red-100 text-red-700 dark:bg-red-900 dark:text-red-300',
+  UNKNOWN: 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-300',
+};
+
+const HEALTH_LABEL: Record<string, string> = {
+  UP: '정상',
+  DOWN: '중단',
+  UNKNOWN: '알 수 없음',
+};
+
+const truncate = (str: string, max: number): string =>
+  str.length > max ? str.slice(0, max) + '...' : str;
+
+interface DomainSectionProps {
+  domainName: string;
+  apis: ServiceApiItem[];
+  serviceId: number;
+  onNavigate: (serviceId: number, apiId: number) => void;
+}
+
+const DomainSection = ({ domainName, apis, serviceId, onNavigate }: DomainSectionProps) => (
+  <div className="mb-6">
+    <div className="flex items-center gap-3 mb-3">
+      <h3 className="text-base font-semibold text-gray-800 dark:text-gray-200">{domainName}</h3>
+      <span className="text-xs px-2 py-0.5 rounded-full bg-gray-100 text-gray-500 dark:bg-gray-700 dark:text-gray-400">
+        {apis.length}개
+      </span>
+    </div>
+    <div className="bg-white dark:bg-gray-800 rounded-lg shadow overflow-hidden border border-gray-100 dark:border-gray-700">
+      <table className="w-full text-sm">
+        <thead className="bg-gray-50 dark:bg-gray-700">
+          <tr>
+            <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase w-24">메서드</th>
+            <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">경로</th>
+            <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">API명</th>
+            <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">설명</th>
+            <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase w-16">상태</th>
+          </tr>
+        </thead>
+        <tbody className="divide-y divide-gray-200 dark:divide-gray-700">
+          {apis.map((api) => (
+            <tr
+              key={api.apiId}
+              className="hover:bg-blue-50 dark:hover:bg-gray-700 cursor-pointer transition-colors"
+              onClick={() => onNavigate(serviceId, api.apiId)}
+            >
+              <td className="px-4 py-3">
+                <span
+                  className={`inline-block px-2 py-0.5 rounded text-xs font-bold uppercase ${METHOD_COLORS[api.apiMethod] ?? 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-300'}`}
+                >
+                  {api.apiMethod}
+                </span>
+              </td>
+              <td className="px-4 py-3 font-mono text-xs text-gray-700 dark:text-gray-300 max-w-xs truncate" title={api.apiPath}>
+                {api.apiPath}
+              </td>
+              <td className="px-4 py-3 text-gray-900 dark:text-gray-100 font-medium max-w-xs truncate" title={api.apiName}>
+                {api.apiName}
+              </td>
+              <td className="px-4 py-3 text-gray-500 dark:text-gray-400 max-w-sm">
+                {api.description ? truncate(api.description, 60) : <span className="text-gray-300 dark:text-gray-600">-</span>}
+              </td>
+              <td className="px-4 py-3">
+                {api.isActive ? (
+                  <span className="inline-block w-2 h-2 rounded-full bg-green-500" title="활성" />
+                ) : (
+                  <span className="inline-block w-2 h-2 rounded-full bg-gray-300 dark:bg-gray-600" title="비활성" />
+                )}
+              </td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    </div>
+  </div>
+);
+
+const ApiHubServicePage = () => {
+  const { serviceId } = useParams<{ serviceId: string }>();
+  const navigate = useNavigate();
+  const [service, setService] = useState<ServiceCatalog | null>(null);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const fetchData = useCallback(async () => {
+    if (!serviceId) return;
+    try {
+      const res = await getCatalog();
+      if (res.success && res.data) {
+        const found = res.data.find((s) => s.serviceId === Number(serviceId));
+        if (found) {
+          setService(found);
+        } else {
+          setError('서비스를 찾을 수 없습니다');
+        }
+      } else {
+        setError('서비스 정보를 불러오지 못했습니다');
+      }
+    } catch {
+      setError('서비스 정보를 불러오는 중 오류가 발생했습니다');
+    } finally {
+      setIsLoading(false);
+    }
+  }, [serviceId]);
+
+  useEffect(() => {
+    fetchData();
+  }, [fetchData]);
+
+  const handleApiNavigate = (svcId: number, apiId: number) => {
+    navigate(`/api-hub/services/${svcId}/apis/${apiId}`);
+  };
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center h-64">
+        <div className="text-gray-500 dark:text-gray-400">로딩 중...</div>
+      </div>
+    );
+  }
+
+  if (error || !service) {
+    return (
+      <div>
+        <button
+          onClick={() => navigate('/api-hub')}
+          className="text-sm text-blue-600 hover:text-blue-800 dark:text-blue-400 dark:hover:text-blue-300 mb-4 inline-block"
+        >
+          ← API HUB으로
+        </button>
+        <div className="text-center py-20 text-gray-500 dark:text-gray-400">
+          {error ?? '서비스를 찾을 수 없습니다'}
+        </div>
+      </div>
+    );
+  }
+
+  const domainsMap = new Map<string, ServiceApiItem[]>();
+  for (const dg of service.domains) {
+    const key = dg.domain || '기타';
+    domainsMap.set(key, dg.apis);
+  }
+
+  // If any apis fall under null domain and weren't covered by domains array, show them under 기타
+  const domainEntries = [...domainsMap.entries()];
+
+  return (
+    <div>
+      <button
+        onClick={() => navigate('/api-hub')}
+        className="text-sm text-blue-600 hover:text-blue-800 dark:text-blue-400 dark:hover:text-blue-300 mb-4 inline-block"
+      >
+        ← API HUB으로
+      </button>
+
+      {/* Service Header */}
+      <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 mb-6 border border-gray-100 dark:border-gray-700">
+        <div className="flex items-start justify-between">
+          <div className="flex-1 min-w-0">
+            <div className="flex items-center gap-3 mb-1">
+              <h1 className="text-2xl font-bold text-gray-900 dark:text-gray-100">{service.serviceName}</h1>
+              <span className="text-sm text-gray-500 dark:text-gray-400 font-mono">{service.serviceCode}</span>
+            </div>
+            {service.description && (
+              <p className="text-gray-600 dark:text-gray-400 mt-2">{service.description}</p>
+            )}
+          </div>
+          <div className="flex flex-col items-end gap-2 ml-6 shrink-0">
+            <span
+              className={`flex items-center gap-1.5 px-3 py-1 rounded-full text-sm font-medium ${HEALTH_BADGE[service.healthStatus] ?? 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-300'}`}
+            >
+              <span className={`w-2 h-2 rounded-full ${HEALTH_DOT[service.healthStatus] ?? 'bg-gray-400'}`} />
+              {HEALTH_LABEL[service.healthStatus] ?? service.healthStatus}
+            </span>
+            <div className="flex items-center gap-4 text-sm text-gray-500 dark:text-gray-400">
+              <span>API {service.apiCount}개</span>
+              <span>도메인 {service.domains.length}개</span>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {/* API 목록 by Domain */}
+      {domainEntries.length > 0 ? (
+        domainEntries.map(([domain, apis]) => (
+          <DomainSection
+            key={domain}
+            domainName={domain}
+            apis={apis}
+            serviceId={service.serviceId}
+            onNavigate={handleApiNavigate}
+          />
+        ))
+      ) : (
+        <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-8 text-center text-gray-400 dark:text-gray-500">
+          등록된 API가 없습니다
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default ApiHubServicePage;

frontend/src/services/apiHubService.ts

@@ -0,0 +1,5 @@
+import { get } from './apiClient';
+import type { ServiceCatalog, RecentApi } from '../types/apihub';
+
+export const getCatalog = () => get<ServiceCatalog[]>('/api-hub/catalog');
+export const getRecentApis = () => get<RecentApi[]>('/api-hub/recent-apis');

frontend/src/types/apihub.ts

@@ -0,0 +1,41 @@
+export interface DomainGroup {
+  domain: string;
+  apis: ServiceApiItem[];
+}
+
+export interface ServiceApiItem {
+  apiId: number;
+  serviceId: number;
+  apiPath: string;
+  apiMethod: string;
+  apiName: string;
+  apiDomain: string | null;
+  apiSection: string | null;
+  description: string | null;
+  isActive: boolean;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export interface ServiceCatalog {
+  serviceId: number;
+  serviceCode: string;
+  serviceName: string;
+  description: string | null;
+  healthStatus: 'UP' | 'DOWN' | 'UNKNOWN';
+  apiCount: number;
+  domains: DomainGroup[];
+}
+
+export interface RecentApi {
+  apiId: number;
+  apiName: string;
+  apiPath: string;
+  apiMethod: string;
+  apiDomain: string | null;
+  description: string | null;
+  serviceId: number;
+  serviceCode: string;
+  serviceName: string;
+  createdAt: string;
+}

src/main/java/com/gcsc/connection/apihub/controller/ApiHubController.java

@@ -0,0 +1,42 @@
+package com.gcsc.connection.apihub.controller;
+
+import com.gcsc.connection.apihub.dto.RecentApiResponse;
+import com.gcsc.connection.apihub.dto.ServiceCatalogResponse;
+import com.gcsc.connection.apihub.service.ApiHubService;
+import com.gcsc.connection.common.dto.ApiResponse;
+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.RestController;
+
+import java.util.List;
+
+/**
+ * API Hub 카탈로그 및 최근 API 조회 컨트롤러
+ */
+@RestController
+@RequestMapping("/api/api-hub")
+@RequiredArgsConstructor
+public class ApiHubController {
+
+    private final ApiHubService apiHubService;
+
+    /**
+     * 활성 서비스와 해당 서비스의 활성 API를 도메인별로 그룹화하여 카탈로그 형태로 반환
+     */
+    @GetMapping("/catalog")
+    public ResponseEntity<ApiResponse<List<ServiceCatalogResponse>>> getCatalog() {
+        List<ServiceCatalogResponse> catalog = apiHubService.getCatalog();
+        return ResponseEntity.ok(ApiResponse.ok(catalog));
+    }
+
+    /**
+     * 최근 등록된 활성 API 상위 10건 반환
+     */
+    @GetMapping("/recent-apis")
+    public ResponseEntity<ApiResponse<List<RecentApiResponse>>> getRecentApis() {
+        List<RecentApiResponse> recentApis = apiHubService.getRecentApis();
+        return ResponseEntity.ok(ApiResponse.ok(recentApis));
+    }
+}

src/main/java/com/gcsc/connection/apihub/dto/DomainGroup.java

@@ -0,0 +1,11 @@
+package com.gcsc.connection.apihub.dto;
+
+import com.gcsc.connection.service.dto.ServiceApiResponse;
+
+import java.util.List;
+
+public record DomainGroup(
+    String domain,
+    List<ServiceApiResponse> apis
+) {
+}

src/main/java/com/gcsc/connection/apihub/dto/RecentApiResponse.java

@@ -0,0 +1,34 @@
+package com.gcsc.connection.apihub.dto;
+
+import com.gcsc.connection.service.entity.SnpServiceApi;
+
+import java.time.LocalDateTime;
+
+public record RecentApiResponse(
+    Long apiId,
+    String apiName,
+    String apiPath,
+    String apiMethod,
+    String apiDomain,
+    String description,
+    Long serviceId,
+    String serviceCode,
+    String serviceName,
+    LocalDateTime createdAt
+) {
+
+    public static RecentApiResponse from(SnpServiceApi api) {
+        return new RecentApiResponse(
+            api.getApiId(),
+            api.getApiName(),
+            api.getApiPath(),
+            api.getApiMethod(),
+            api.getApiDomain(),
+            api.getDescription(),
+            api.getService().getServiceId(),
+            api.getService().getServiceCode(),
+            api.getService().getServiceName(),
+            api.getCreatedAt()
+        );
+    }
+}

src/main/java/com/gcsc/connection/apihub/dto/ServiceCatalogResponse.java

@@ -0,0 +1,43 @@
+package com.gcsc.connection.apihub.dto;
+
+import com.gcsc.connection.service.dto.ServiceApiResponse;
+import com.gcsc.connection.service.entity.SnpService;
+import com.gcsc.connection.service.entity.SnpServiceApi;
+
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public record ServiceCatalogResponse(
+    Long serviceId,
+    String serviceCode,
+    String serviceName,
+    String description,
+    String healthStatus,
+    int apiCount,
+    List<DomainGroup> domains
+) {
+
+    public static ServiceCatalogResponse from(SnpService service, List<SnpServiceApi> apis) {
+        Map<String, List<ServiceApiResponse>> byDomain = apis.stream()
+            .collect(Collectors.groupingBy(
+                api -> api.getApiDomain() != null ? api.getApiDomain() : "",
+                Collectors.mapping(ServiceApiResponse::from, Collectors.toList())
+            ));
+
+        List<DomainGroup> domainGroups = byDomain.entrySet().stream()
+            .sorted(Map.Entry.comparingByKey())
+            .map(entry -> new DomainGroup(entry.getKey(), entry.getValue()))
+            .toList();
+
+        return new ServiceCatalogResponse(
+            service.getServiceId(),
+            service.getServiceCode(),
+            service.getServiceName(),
+            service.getDescription(),
+            service.getHealthStatus().name(),
+            apis.size(),
+            domainGroups
+        );
+    }
+}

src/main/java/com/gcsc/connection/apihub/service/ApiHubService.java

@@ -0,0 +1,49 @@
+package com.gcsc.connection.apihub.service;
+
+import com.gcsc.connection.apihub.dto.RecentApiResponse;
+import com.gcsc.connection.apihub.dto.ServiceCatalogResponse;
+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 ApiHubService {
+
+    private final SnpServiceRepository snpServiceRepository;
+    private final SnpServiceApiRepository snpServiceApiRepository;
+
+    /**
+     * 활성 서비스와 각 서비스의 활성 API를 도메인별로 그룹화하여 카탈로그 반환
+     */
+    @Transactional(readOnly = true)
+    public List<ServiceCatalogResponse> getCatalog() {
+        List<SnpService> activeServices = snpServiceRepository.findByIsActiveTrue();
+
+        return activeServices.stream()
+            .map(service -> {
+                List<SnpServiceApi> activeApis = snpServiceApiRepository
+                    .findByServiceServiceIdAndIsActiveTrue(service.getServiceId());
+                return ServiceCatalogResponse.from(service, activeApis);
+            })
+            .toList();
+    }
+
+    /**
+     * 최근 등록된 활성 API 상위 10건 반환
+     */
+    @Transactional(readOnly = true)
+    public List<RecentApiResponse> getRecentApis() {
+        return snpServiceApiRepository.findTop10ByIsActiveTrueOrderByCreatedAtDesc().stream()
+            .map(RecentApiResponse::from)
+            .toList();
+    }
+}

src/main/java/com/gcsc/connection/service/repository/SnpServiceApiRepository.java

@@ -15,4 +15,8 @@ public interface SnpServiceApiRepository extends JpaRepository<SnpServiceApi, Lo
 
     Optional<SnpServiceApi> findByServiceServiceIdAndApiPathAndApiMethod(
         Long serviceId, String apiPath, String apiMethod);
+
+    List<SnpServiceApi> findByServiceServiceIdAndIsActiveTrue(Long serviceId);
+
+    List<SnpServiceApi> findTop10ByIsActiveTrueOrderByCreatedAtDesc();
 }