diff --git a/.replit b/.replit
index 8bbc693..f9a4cd6 100644
--- a/.replit
+++ b/.replit
@@ -38,6 +38,10 @@ externalPort = 4200
 localPort = 38631
 externalPort = 8080
 
+[[ports]]
+localPort = 39065
+externalPort = 8081
+
 [[ports]]
 localPort = 40537
 externalPort = 3000
diff --git a/client/src/App.tsx b/client/src/App.tsx
index 57062bd..7fd12f2 100644
--- a/client/src/App.tsx
+++ b/client/src/App.tsx
@@ -69,7 +69,7 @@ function Router() {
       <Route path="/calendar">{() => <ProtectedRoute component={Calendar} />}</Route>
       <Route path="/media">{() => <ProtectedRoute component={Media} />}</Route>
       <Route path="/pages">{() => <ProtectedRoute component={PagesManagement} />}</Route>
-      <Route path="/ai">{() => <ProtectedRoute component={AI} />}</Route>
+      <Route path="/ai">{() => <ProtectedRoute component={AI} adminOnly />}</Route>
       <Route path="/history">{() => <ProtectedRoute component={History} />}</Route>
       <Route path="/settings">{() => <ProtectedRoute component={Settings} adminOnly />}</Route>
       <Route path="/sql">{() => <ProtectedRoute component={SqlAdmin} adminOnly />}</Route>
diff --git a/client/src/components/sidebar.tsx b/client/src/components/sidebar.tsx
index f0154c0..3e6e0a2 100644
--- a/client/src/components/sidebar.tsx
+++ b/client/src/components/sidebar.tsx
@@ -63,7 +63,6 @@ export default function Sidebar({ onLinkClick }: SidebarProps = {}) {
     { icon: PlusCircle, label: "Nouvelle publication", href: "/new", badge: null },
     { icon: Calendar, label: "Calendrier", href: "/calendar", badge: null },
     { icon: Images, label: "Médiathèque", href: "/media", badge: null },
-    { icon: Bot, label: "Assistant IA", href: "/ai", badge: null },
   ];
 
   const statsItems = [
@@ -212,6 +211,30 @@ export default function Sidebar({ onLinkClick }: SidebarProps = {}) {
                 </div>
               )}
             </a>
+            <a
+              href="/ai"
+              onClick={(e) => handleLinkClick("/ai", e)}
+              className={`
+                flex items-center gap-3 px-4 py-3 rounded-xl transition-all relative group cursor-pointer
+                ${location === "/ai"
+                  ? 'bg-gradient-to-r from-primary/10 to-secondary/10 text-primary shadow-sm' 
+                  : 'text-muted-foreground hover:bg-sidebar-accent hover:text-foreground'
+                }
+                ${isCollapsed ? 'justify-center' : ''}
+              `}
+              data-testid="link-assistant-ia"
+            >
+              {location === "/ai" && (
+                <div className="absolute left-0 top-1/2 -translate-y-1/2 w-1 h-8 gradient-primary rounded-r-full" />
+              )}
+              <Bot className="w-5 h-5" />
+              {!isCollapsed && <span>Assistant IA</span>}
+              {isCollapsed && (
+                <div className="absolute left-full ml-2 px-3 py-2 bg-popover text-popover-foreground text-sm rounded-lg shadow-lg opacity-0 invisible group-hover:opacity-100 group-hover:visible transition-all whitespace-nowrap z-50">
+                  Assistant IA
+                </div>
+              )}
+            </a>
             <a
               href="/users"
               onClick={(e) => handleLinkClick("/users", e)}
diff --git a/replit.md b/replit.md
index 22b6fd7..2c7e2e7 100644
--- a/replit.md
+++ b/replit.md
@@ -10,6 +10,9 @@ Preferred communication style: Simple, everyday language.
 
 ## Recent Changes
 
+### October 10, 2025
+- **AI Assistant Admin-Only Access**: Restricted access to AI Assistant to administrators only. Route `/ai` now requires admin role with `adminOnly` prop. Sidebar moved "Assistant IA" link to Administration section (visible only to admins). Backend endpoints (`/api/ai/models`, `/api/ai/generate`, `/api/ai/generations`) protected with `requireAdmin` middleware. Standard users attempting to access AI features see "Accès refusé" message and receive 403 responses.
+
 ### October 9, 2025
 - **AI Variants Position**: Repositioned AI-generated text variations to display after "Contenu" card and before "Texte de la publication" card in new-post page for better workflow
 - **Calendar Auto-Refresh**: Fixed calendar not updating after creating a new scheduled post. Added `queryClient.invalidateQueries` with `refetchType: 'all'` in `createPostMutation.onSuccess` to force cache invalidation and immediate refetch
@@ -47,7 +50,7 @@ These transformation URLs are stored in the database (`facebookLandscapeUrl`, `f
 
 ### Authentication & Authorization
 
-Authentication uses **Passport.js** with local strategy and `bcrypt` for password hashing. User roles (`admin`, `user`) control access, with `admin` having full access and `user` limited to publishing features. Session management is via `express-session` with HTTP-only cookies, `sameSite: 'lax'`, and a 7-day duration, secured by a `SESSION_SECRET` environment variable. Routes are protected on both the backend (middleware `requireAuth`, `requireAdmin`) and frontend (`ProtectedRoute` component).
+Authentication uses **Passport.js** with local strategy and `bcrypt` for password hashing. User roles (`admin`, `user`) control access, with `admin` having full access and `user` limited to publishing features (posts, calendar, media, history). The **AI Assistant** is restricted to administrators only. Session management is via `express-session` with HTTP-only cookies, `sameSite: 'lax'`, and a 7-day duration, secured by a `SESSION_SECRET` environment variable. Routes are protected on both the backend (middleware `requireAuth`, `requireAdmin`) and frontend (`ProtectedRoute` component with optional `adminOnly` prop).
 
 ### UI/UX Decisions
 
diff --git a/server/routes.ts b/server/routes.ts
index 7582533..4b4dcc7 100644
--- a/server/routes.ts
+++ b/server/routes.ts
@@ -424,7 +424,7 @@ export async function registerRoutes(app: Express): Promise<Server> {
   });
 
   // Get available AI models from OpenRouter
-  app.get("/api/ai/models", requireAuth, async (req, res) => {
+  app.get("/api/ai/models", requireAdmin, async (req, res) => {
     try {
       const models = await openRouterService.getAvailableModels();
       res.json({ models });
@@ -435,7 +435,7 @@ export async function registerRoutes(app: Express): Promise<Server> {
   });
 
   // AI text generation
-  app.post("/api/ai/generate", requireAuth, async (req, res) => {
+  app.post("/api/ai/generate", requireAdmin, async (req, res) => {
     try {
       const user = req.user as User;
       const userId = user.id;
@@ -937,7 +937,7 @@ export async function registerRoutes(app: Express): Promise<Server> {
   });
 
   // AI Generations
-  app.get("/api/ai/generations", requireAuth, async (req, res) => {
+  app.get("/api/ai/generations", requireAdmin, async (req, res) => {
     try {
       const user = req.user as User;
       const userId = user.id;