diff --git a/app/(dashboard)/analytics/page.tsx b/app/(dashboard)/analytics/page.tsx
index 79b163c6..4afbd5dd 100644
--- a/app/(dashboard)/analytics/page.tsx
+++ b/app/(dashboard)/analytics/page.tsx
@@ -1,7 +1,7 @@
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import AnalyticsClient from './AnalyticsClient';
 
 export default async function AnalyticsPage() {
-  await requireUser();
+  await requireAdmin();
   return <AnalyticsClient />;
 }
diff --git a/app/(dashboard)/api-docs/page.tsx b/app/(dashboard)/api-docs/page.tsx
index 4b536217..9eaa6646 100644
--- a/app/(dashboard)/api-docs/page.tsx
+++ b/app/(dashboard)/api-docs/page.tsx
@@ -1,4 +1,4 @@
-import { requireUser } from "@/src/lib/auth";
+import { requireAdmin } from "@/src/lib/auth";
 import ApiDocsClient from "./ApiDocsClient";
 
 export const metadata = {
@@ -6,7 +6,7 @@ export const metadata = {
 };
 
 export default async function ApiDocsPage() {
-  await requireUser();
+  await requireAdmin();
 
   return <ApiDocsClient />;
 }
diff --git a/app/api/analytics/blocked/route.ts b/app/api/analytics/blocked/route.ts
index c88b801d..27911502 100644
--- a/app/api/analytics/blocked/route.ts
+++ b/app/api/analytics/blocked/route.ts
@@ -1,9 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { getAnalyticsBlocked, INTERVAL_SECONDS } from '@/src/lib/analytics-db';
 
 export async function GET(req: NextRequest) {
-  await requireUser();
+  await requireAdmin();
   const { searchParams } = req.nextUrl;
   const hostsParam = searchParams.get('hosts') ?? '';
   const hosts = hostsParam ? hostsParam.split(',').filter(Boolean) : [];
diff --git a/app/api/analytics/countries/route.ts b/app/api/analytics/countries/route.ts
index da6dea5e..28ccd3e6 100644
--- a/app/api/analytics/countries/route.ts
+++ b/app/api/analytics/countries/route.ts
@@ -1,9 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { getAnalyticsCountries, INTERVAL_SECONDS } from '@/src/lib/analytics-db';
 
 export async function GET(req: NextRequest) {
-  await requireUser();
+  await requireAdmin();
   const { searchParams } = req.nextUrl;
   const hostsParam = searchParams.get('hosts') ?? '';
   const hosts = hostsParam ? hostsParam.split(',').filter(Boolean) : [];
diff --git a/app/api/analytics/hosts/route.ts b/app/api/analytics/hosts/route.ts
index 2cb3bd1e..38fa9815 100644
--- a/app/api/analytics/hosts/route.ts
+++ b/app/api/analytics/hosts/route.ts
@@ -1,9 +1,9 @@
 import { NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { getAnalyticsHosts } from '@/src/lib/analytics-db';
 
 export async function GET() {
-  await requireUser();
+  await requireAdmin();
   const hosts = await getAnalyticsHosts();
   return NextResponse.json(hosts);
 }
diff --git a/app/api/analytics/protocols/route.ts b/app/api/analytics/protocols/route.ts
index ee48a05c..1cfa11af 100644
--- a/app/api/analytics/protocols/route.ts
+++ b/app/api/analytics/protocols/route.ts
@@ -1,9 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { getAnalyticsProtocols, INTERVAL_SECONDS } from '@/src/lib/analytics-db';
 
 export async function GET(req: NextRequest) {
-  await requireUser();
+  await requireAdmin();
   const { searchParams } = req.nextUrl;
   const hostsParam = searchParams.get('hosts') ?? '';
   const hosts = hostsParam ? hostsParam.split(',').filter(Boolean) : [];
diff --git a/app/api/analytics/summary/route.ts b/app/api/analytics/summary/route.ts
index 0b66bf32..6fb643cc 100644
--- a/app/api/analytics/summary/route.ts
+++ b/app/api/analytics/summary/route.ts
@@ -1,9 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { getAnalyticsSummary, INTERVAL_SECONDS } from '@/src/lib/analytics-db';
 
 export async function GET(req: NextRequest) {
-  await requireUser();
+  await requireAdmin();
   const { searchParams } = req.nextUrl;
   const hostsParam = searchParams.get('hosts') ?? '';
   const hosts = hostsParam ? hostsParam.split(',').filter(Boolean) : [];
diff --git a/app/api/analytics/timeline/route.ts b/app/api/analytics/timeline/route.ts
index 56b1a79a..d2fd058f 100644
--- a/app/api/analytics/timeline/route.ts
+++ b/app/api/analytics/timeline/route.ts
@@ -1,9 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { getAnalyticsTimeline, INTERVAL_SECONDS } from '@/src/lib/analytics-db';
 
 export async function GET(req: NextRequest) {
-  await requireUser();
+  await requireAdmin();
   const { searchParams } = req.nextUrl;
   const hostsParam = searchParams.get('hosts') ?? '';
   const hosts = hostsParam ? hostsParam.split(',').filter(Boolean) : [];
diff --git a/app/api/analytics/user-agents/route.ts b/app/api/analytics/user-agents/route.ts
index 9470e907..86e6a055 100644
--- a/app/api/analytics/user-agents/route.ts
+++ b/app/api/analytics/user-agents/route.ts
@@ -1,9 +1,9 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { getAnalyticsUserAgents, INTERVAL_SECONDS } from '@/src/lib/analytics-db';
 
 export async function GET(req: NextRequest) {
-  await requireUser();
+  await requireAdmin();
   const { searchParams } = req.nextUrl;
   const hostsParam = searchParams.get('hosts') ?? '';
   const hosts = hostsParam ? hostsParam.split(',').filter(Boolean) : [];
diff --git a/app/api/analytics/waf-stats/route.ts b/app/api/analytics/waf-stats/route.ts
index 93de18a1..2ce559f8 100644
--- a/app/api/analytics/waf-stats/route.ts
+++ b/app/api/analytics/waf-stats/route.ts
@@ -1,5 +1,5 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { requireUser } from '@/src/lib/auth';
+import { requireAdmin } from '@/src/lib/auth';
 import { INTERVAL_SECONDS } from '@/src/lib/analytics-db';
 import { countWafEventsInRange, getTopWafRulesWithHosts, getWafEventCountries } from '@/src/lib/models/waf-events';
 
@@ -16,7 +16,7 @@ function resolveRange(params: URLSearchParams): { from: number; to: number } {
 }
 
 export async function GET(req: NextRequest) {
-  await requireUser();
+  await requireAdmin();
   const { from, to } = resolveRange(req.nextUrl.searchParams);
   const [total, topRules, byCountry] = await Promise.all([
     countWafEventsInRange(from, to),
diff --git a/app/api/geoip-status/route.ts b/app/api/geoip-status/route.ts
index 6ffa512a..bedcce15 100644
--- a/app/api/geoip-status/route.ts
+++ b/app/api/geoip-status/route.ts
@@ -1,12 +1,12 @@
 import { existsSync } from "node:fs";
 import { NextResponse } from "next/server";
-import { requireUser } from "@/src/lib/auth";
+import { requireAdmin } from "@/src/lib/auth";
 
 const COUNTRY_DB = "/usr/share/GeoIP/GeoLite2-Country.mmdb";
 const ASN_DB = "/usr/share/GeoIP/GeoLite2-ASN.mmdb";
 
 export async function GET() {
-  await requireUser();
+  await requireAdmin();
   return NextResponse.json({
     country: existsSync(COUNTRY_DB),
     asn: existsSync(ASN_DB),
diff --git a/app/api/v1/openapi.json/route.ts b/app/api/v1/openapi.json/route.ts
index 06824fde..cfe5de96 100644
--- a/app/api/v1/openapi.json/route.ts
+++ b/app/api/v1/openapi.json/route.ts
@@ -1,4 +1,5 @@
-import { NextResponse } from "next/server";
+import { NextRequest, NextResponse } from "next/server";
+import { requireApiAdmin, apiErrorResponse } from "@/src/lib/api-auth";
 
 const spec = {
   openapi: "3.1.0",
@@ -1768,10 +1769,15 @@ const spec = {
   },
 };
 
-export async function GET() {
+export async function GET(request: NextRequest) {
+  try {
+    await requireApiAdmin(request);
+  } catch (error) {
+    return apiErrorResponse(error);
+  }
   return NextResponse.json(spec, {
     headers: {
-      "Cache-Control": "public, max-age=3600",
+      "Cache-Control": "private, max-age=3600",
     },
   });
 }
diff --git a/tests/unit/api-routes/openapi.test.ts b/tests/unit/api-routes/openapi.test.ts
index 7cfb36bd..d4f3ead5 100644
--- a/tests/unit/api-routes/openapi.test.ts
+++ b/tests/unit/api-routes/openapi.test.ts
@@ -1,20 +1,46 @@
-import { describe, it, expect } from 'vitest';
+import { describe, it, expect, vi } from 'vitest';
+import { NextRequest } from 'next/server';
+
+vi.mock('@/src/lib/api-auth', () => {
+  const ApiAuthError = class extends Error {
+    status: number;
+    constructor(msg: string, status: number) { super(msg); this.status = status; this.name = 'ApiAuthError'; }
+  };
+  return {
+    requireApiAdmin: vi.fn().mockResolvedValue({ userId: 1, role: 'admin', authMethod: 'bearer' }),
+    apiErrorResponse: vi.fn((error: unknown) => {
+      const { NextResponse: NR } = require('next/server');
+      if (error instanceof ApiAuthError) {
+        return NR.json({ error: error.message }, { status: error.status });
+      }
+      return NR.json({ error: error instanceof Error ? error.message : 'Internal server error' }, { status: 500 });
+    }),
+    ApiAuthError,
+  };
+});
+
 import { GET } from '@/app/api/v1/openapi.json/route';
 
+function makeRequest() {
+  return new NextRequest('http://localhost/api/v1/openapi.json', {
+    headers: { authorization: 'Bearer test-token' },
+  });
+}
+
 describe('GET /api/v1/openapi.json', () => {
   it('returns 200', async () => {
-    const response = await GET();
+    const response = await GET(makeRequest());
     expect(response.status).toBe(200);
   });
 
   it('returns valid JSON with openapi field = "3.1.0"', async () => {
-    const response = await GET();
+    const response = await GET(makeRequest());
     const data = await response.json();
     expect(data.openapi).toBe('3.1.0');
   });
 
   it('contains all expected paths', async () => {
-    const response = await GET();
+    const response = await GET(makeRequest());
     const data = await response.json();
     const paths = Object.keys(data.paths);
 
@@ -33,12 +59,12 @@ describe('GET /api/v1/openapi.json', () => {
   });
 
   it('has Cache-Control header', async () => {
-    const response = await GET();
-    expect(response.headers.get('Cache-Control')).toBe('public, max-age=3600');
+    const response = await GET(makeRequest());
+    expect(response.headers.get('Cache-Control')).toBe('private, max-age=3600');
   });
 
   it('has components.schemas defined', async () => {
-    const response = await GET();
+    const response = await GET(makeRequest());
     const data = await response.json();
     expect(data.components).toBeDefined();
     expect(data.components.schemas).toBeDefined();