With the wider rollout of Gemni Spark to Pro-level accounts in other parts of the English-speaking world, I was able to see that custom MCP connections are now being supported. I tried using the standard MCP URL, and it does go through the process of authenticating but will not connect. I am thinking that the OAuth application trust issue may persist on Superhuman’s side for public custom endpoints. Is it possible to whitelist the oauth-redirect.googleusercontent.com domain for custom MCP clients? Perhaps this will resolve the unverified redirect restriction.
Thanks for anything you could so. Ideally, an additional menu item for Gemini Spark would be useful.
