fix: Token endpoint response for invalid_client

AnkeshThakur · AnkeshThakur · commit fcddae559b92 · 2025-10-14T23:36:20.000+05:30
diff --git a/src/mcp/server/auth/handlers/token.py b/src/mcp/server/auth/handlers/token.py
@@ -110,7 +110,7 @@ async def handle(self, request: Request):
         except AuthenticationError as e:
             return self.response(
                 TokenErrorResponse(
-                    error="unauthorized_client",
+                    error="invalid_client",
                     error_description=e.message,
                 )
             )

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ async def handle(self, request: Request):`
`110`	`110`	`except AuthenticationError as e:`
`111`	`111`	`return self.response(`
`112`	`112`	`TokenErrorResponse(`
`113`		`- error="unauthorized_client",`
	`113`	`+ error="invalid_client",`
`114`	`114`	`error_description=e.message,`
`115`	`115`	`)`
`116`	`116`	`)`