I would like to bring to your attention a critical issue: the Google Calendar integration is currently failing for all VAPI accounts attempting to connect. The OAuth flow with Google completes and shows “successfully connected,” but after being redirected back to VAPI, the integration status still displays “Connect” and the connection does not persist. As a result, none of the Google Calendar tools (e.g. google.calendar.event.create, google.calendar.availability.check) can be used. In many cases the error message shown is: Missing Nango configuration for tool type: google.calendar.event.create This is not isolated to my account. Multiple other users have reported exactly the same behavior. Below are currently active links to such user complaint threads: Google Calendar Check Availability tool issue https://vapi.ai/community/m/1402761978694336653 Google Calendar Check Availability Issue https://vapi.ai/community/m/1415123240350912533 Connect Google Calendar Account https://vapi.ai/community/m/1390076564653473912 Google calendar tool of vapi not working (Reddit) https://www.reddit.com/r/vapiai/comments/1k10m6a/google_calendar_tool_of_vapi_not_working Google calendar using API only https://vapi.ai/community/m/1376390987424858163 How to integrate google calendar tools https://vapi.ai/community/m/1374871870847062087 Because this affects all accounts, it is a blocking issue: without a working calendar connection, scheduling and assistant features relying on calendar functions won’t work. Please confirm that this is recognized as a bug and provide a status update and estimated time of fix.

Second that! it´s a pretty pain in the ass. We are working with several people since a few days to fix this and now it seems like its a vapi problem. All Support we got until now was the regular please connect your account message, which doens´t help at all.

As mentioned in a different post, this behavior is the same for Google Sheets. Clearly a VAPI issue that has been ongoing for a very long time considering how important this integration is.

why should not you implement the Restful backend for this? I have implemented the backend apis which can register google calendar meeting and sheet access. also defines the apiRequest tools for that backend, so Assistant calls that tools

We apologize for the inconvenience this has caused, but we appreciate you flagging the issue. This has been reported to the team and we will provide an update once we hear back.