MCP Connector "Resource not found" - tools/call never reaches server

I can confirm I have a similar / the same issue, however, I have No Auth selected and I’m using stateless sessions and all tools are read only. The calls never reach my side when they fail.

The issue is otherwise the same as what other people have mentioned, but on a once off I got this:

Request:

{ “path”: “//link_<id>/tool”, “args”: { “itemId”: , “limit”: 20 } }

and the response:

This tool call was blocked by OpenAI’s safety checks. Please double check what you are sending.