diff --git a/services/auth.py b/services/auth.py
index 988749d..bb3ce6c 100644
--- a/services/auth.py
+++ b/services/auth.py
@@ -1,35 +1,67 @@
+from services.core import get_author
 from functools import wraps
 import aiohttp
+from aiohttp.web import HTTPUnauthorized
 
-from services.core import get_author
 from settings import AUTH_URL
 
 
-async def check_auth(req):
+async def check_auth(req) -> (bool, int | None):
     token = req.headers.get("Authorization")
-    headers = {"Authorization": token, "Content-Type": "application/json"}  # "Bearer " + removed
-    print(f"[services.auth] checking auth token: {token}")
+    if token:
+        # Logging the authentication token
+        print(f"[services.auth] checking auth token: {token}")
+        query_name = "validate_jwt_token"
+        opeation = "ValidateToken"
+        headers = {
+            "Content-Type": "application/json",
+        }
 
-    query_name = "session"
-    query_type = "query"
-    operation = "GetUserId"
+        variables = {
+            "params": {
+                "token_type": "access_token",
+                "token": token.encode("utf-8"),
+            }
+        }
 
-    gql = {
-        "query": query_type + " " + operation + " { " + query_name + " { user { id } } }",
-        "operationName": operation,
-        "variables": None,
-    }
+        gql = {
+            "query": f"query {opeation}($params: ValidateJWTTokenInput!) {{ {query_name}(params: $params) {{ is_valid claims }} }}",
+            "variables": variables,
+            "operationName": opeation,
+        }
+        print(f"[services.auth] Graphql: {gql}")
+        try:
+            # Asynchronous HTTP request to the authentication server
+            async with aiohttp.ClientSession() as session:
+                async with session.post(AUTH_URL, json=gql, headers=headers) as response:
+                    # Logging the GraphQL response
+                    response_text = await response.text()
+                    print(f"[services.auth] GraphQL Response: {response_text}")
+
+                    if response.status == 200:
+                        # Parsing JSON response
+                        data = await response.json()
+                        errors = data.get("errors")
+                        if errors:
+                            print(f"[services.auth] errors: {errors}")
+                        else:
+                            user_id = data.get("data", {}).get(query_name, {}).get("claims", {}).get("sub")
+
+                            if user_id:
+                                # Logging the retrieved user ID
+                                print(f"[services.auth] User ID retrieved: {user_id}")
+                                return True, user_id
+                            else:
+                                # Logging when no user ID is found in the response
+                                print("[services.auth] No user ID found in the response")
+                    else:
+                        # Logging when the request to the authentication server fails
+                        print(f"[services.auth] Request failed with status: {response.status}")
+
+        except Exception as e:
+            # Handling and logging exceptions during authentication check
+            print(f"[services.auth] {e}")
 
-    async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=30.0)) as session:
-        async with session.post(AUTH_URL, headers=headers, json=gql) as response:
-            print(f"[services.auth] {AUTH_URL} response: {response.status}")
-            if response.status != 200:
-                return False, None
-            r = await response.json()
-            if r:
-                user_id = r.get("data", {}).get(query_name, {}).get("user", {}).get("id", None)
-                is_authenticated = user_id is not None
-                return is_authenticated, user_id
     return False, None
 
 
@@ -41,7 +73,8 @@ def login_required(f):
         req = context.get("request")
         is_authenticated, user_id = await check_auth(req)
         if not is_authenticated:
-            raise Exception("You are not logged in")
+            # Raising HTTPUnauthorized exception if the user is not authenticated
+            raise HTTPUnauthorized(text="Please, login first")
         else:
             # Добавляем author_id и user_id в контекст
             context["author_id"] = await get_author(user_id)