Update error description for client metadata validation

automaton82 · web-flow · commit 999aa079759e · 2025-09-19T13:08:25.000-04:00
diff --git a/src/mcp/server/auth/handlers/register.py b/src/mcp/server/auth/handlers/register.py
@@ -72,7 +72,7 @@ async def handle(self, request: Request) -> Response:
             return PydanticJSONResponse(
                 content=RegistrationErrorResponse(
                     error="invalid_client_metadata",
-                    error_description="grant_types must contain authorization_code and refresh_token",
+                    error_description="grant_types must be authorization_code and refresh_token",
                 ),
                 status_code=400,
             )

Original file line number	Diff line number	Diff line change
`@@ -72,7 +72,7 @@ async def handle(self, request: Request) -> Response:`
`72`	`72`	`return PydanticJSONResponse(`
`73`	`73`	`content=RegistrationErrorResponse(`
`74`	`74`	`error="invalid_client_metadata",`
`75`		`- error_description="grant_types must contain authorization_code and refresh_token",`
	`75`	`+ error_description="grant_types must be authorization_code and refresh_token",`
`76`	`76`	`),`
`77`	`77`	`status_code=400,`
`78`	`78`	`)`