diff --git a/app/api/evaluations/skills/route.ts b/app/api/evaluations/skills/route.ts
index 63e653c..54f9199 100644
--- a/app/api/evaluations/skills/route.ts
+++ b/app/api/evaluations/skills/route.ts
@@ -1,30 +1,11 @@
 import { NextRequest, NextResponse } from "next/server";
-import { cookies } from "next/headers";
+import { AuthService } from "@/services/auth-service";
 import { evaluationService } from "@/services/evaluation-service";
-import { userService } from "@/services/user-service";
-
-const COOKIE_NAME = "peakSkills_userId";
 
 export async function PUT(request: NextRequest) {
   try {
     // Récupérer l'utilisateur depuis le cookie (maintenant un UUID)
-    const cookieStore = await cookies();
-    const userUuid = cookieStore.get(COOKIE_NAME)?.value;
-
-    if (!userUuid) {
-      return NextResponse.json(
-        { error: "Utilisateur non authentifié" },
-        { status: 401 }
-      );
-    }
-
-    const userProfile = await userService.getUserByUuid(userUuid);
-    if (!userProfile) {
-      return NextResponse.json(
-        { error: "Utilisateur introuvable" },
-        { status: 404 }
-      );
-    }
+    const { userProfile } = await AuthService.requireAuthenticatedUser();
 
     const body = await request.json();
     const { category, skillId, level, canMentor, wantsToLearn, action } = body;
diff --git a/services/auth-service.ts b/services/auth-service.ts
index 40cdb60..aa64d0c 100644
--- a/services/auth-service.ts
+++ b/services/auth-service.ts
@@ -33,6 +33,32 @@ export class AuthService {
     return !!userUuid;
   }
 
+  /**
+   * Vérifie l'authentification et retourne le profil utilisateur
+   * @throws {Error} avec status 401 si non authentifié ou 404 si utilisateur non trouvé
+   */
+  static async requireAuthenticatedUser(): Promise<{
+    userUuid: string;
+    userProfile: UserProfile;
+  }> {
+    const userUuid = await this.getUserUuidFromCookie();
+
+    if (!userUuid) {
+      const error = new Error("Utilisateur non authentifié");
+      (error as any).status = 401;
+      throw error;
+    }
+
+    const userProfile = await userService.getUserByUuid(userUuid);
+    if (!userProfile) {
+      const error = new Error("Utilisateur introuvable");
+      (error as any).status = 404;
+      throw error;
+    }
+
+    return { userUuid, userProfile };
+  }
+
   /**
    * Authentifie un utilisateur et retourne la configuration du cookie
    */