Hello OAuth MCP server Auth mode: google MCP endpoint: https://waservices.etalogue.com/mcp OAuth resource metadata: https://waservices.etalogue.com/oauth-protected-resource Google client id: 85633130560-8ha3tp1gbaqg286bd0439hp55r53lpf8.apps.googleusercontent.com Add the public HTTPS /mcp URL to ChatGPT Apps in Developer Mode.