Format

Author: praboud-ant

src/mcp/server/auth/errors.py

@@ -10,6 +10,7 @@
 
 ErrorCode = Literal["invalid_request", "invalid_client"]
 
+
 class ErrorResponse(BaseModel):
     error: ErrorCode
     error_description: str

src/mcp/server/auth/handlers/authorize.py

@@ -250,7 +250,7 @@ async def error_response(
                     auth_params,
                 ),
                 status_code=302,
-                headers={"Cache-Control": "no-store"}
+                headers={"Cache-Control": "no-store"},
             )
 
         except Exception as validation_error:
@@ -263,7 +263,6 @@ async def error_response(
             )
 
 
-
 def create_error_redirect(
     redirect_uri: AnyUrl, error: Exception | ErrorResponse
 ) -> str:

src/mcp/server/auth/handlers/register.py

@@ -34,6 +34,7 @@ class ErrorResponse(BaseModel):
 class RegistrationHandler:
     clients_store: OAuthRegisteredClientsStore
     client_secret_expiry_seconds: int | None
+
     async def handle(self, request: Request) -> Response:
         # Implements dynamic client registration as defined in https://datatracker.ietf.org/doc/html/rfc7591#section-3.1
         try:

src/mcp/server/auth/handlers/token.py

@@ -83,7 +83,7 @@ async def handle(self, request: Request):
                     error_description=stringify_pydantic_error(validation_error),
                 )
             )
-        
+
         try:
             client_info = await self.client_authenticator(token_request)
         except InvalidClientError as e:

src/mcp/server/auth/middleware/bearer_auth.py

@@ -59,7 +59,6 @@ async def authenticate(self, conn: HTTPConnection):
         return AuthCredentials(auth_info.scopes), AuthenticatedUser(auth_info)
 
 
-
 class RequireAuthMiddleware:
     """
     Middleware that requires a valid Bearer token in the Authorization header.

src/mcp/server/auth/middleware/client_auth.py

@@ -67,4 +67,4 @@ async def __call__(self, request: ClientAuthRequest) -> OAuthClientInformationFu
             ):
                 raise InvalidClientError("Client secret has expired")
 
-        return client
+        return client

tests/server/fastmcp/auth/test_auth_integration.py

@@ -52,9 +52,7 @@ def __init__(self):
     async def get_client(self, client_id: str) -> Optional[OAuthClientInformationFull]:
         return self.clients.get(client_id)
 
-    async def register_client(
-        self, client_info: OAuthClientInformationFull
-    ):
+    async def register_client(self, client_info: OAuthClientInformationFull):
         self.clients[client_info.client_id] = client_info
 
 
@@ -750,12 +748,9 @@ async def test_client_registration_invalid_uri(
         error_data = response.json()
         assert "error" in error_data
         assert error_data["error"] == "invalid_client_metadata"
-        assert (
-            error_data["error_description"]
-            == (
-                "redirect_uris.0: Input should be a valid URL, "
-                "relative URL without a base"
-            )
+        assert error_data["error_description"] == (
+            "redirect_uris.0: Input should be a valid URL, "
+            "relative URL without a base"
         )
 
     @pytest.mark.anyio