The "No Assistant Assigned" message usually means your call did not have an assistant assigned, either because the

assistantId

was not set or your server did not respond with an assistant when Vapi requested it. To fix this, ensure your server endpoint responds to Vapi's

assistant-request

webhook with a valid assistant ID. For example:

js
app.post("/api/assistant-selector", async (req, res) => {
  if (req.body.message?.type === "assistant-request") {
    res.json({ assistantId: "your-assistant-id" });
  }
});

Make sure your endpoint is reachable and responds within 7.5 seconds. [See more details here.](https://docs.vapi.ai/assistants/personalization#implement-your-server-endpoint) Source: - [Vapi Personalization Documentation](https://docs.vapi.ai/assistants/personalization#implement-your-server-endpoint)

Thanks for sharing the details. To help narrow down the issue, could you confirm if you have set a Server URL at the account, phone number, or assistant level in your Vapi dashboard, and if it is correctly responding to assistant requests? This will help determine why calls are showing as "No Assistant Assigned." Sources: - [Vapi Docs Server URL Events](https://docs.vapi.ai/server-url/events) - [Vapi Docs Setting Server URLs](https://docs.vapi.ai/server-url/setting-server-urls)

Thanks for sharing the details. To help narrow down the issue, could you confirm if you have set a Server URL at the account, phone number, or assistant level in your Vapi dashboard, and if it is correctly responding to assistant requests? This will help determine why calls are showing as "No Assistant Assigned." Sources: - [Vapi Docs Server URL Events](https://docs.vapi.ai/server-url/events) - [Vapi Docs Setting Server URLs](https://docs.vapi.ai/server-url/setting-server-urls)

To fix incorrect times when scheduling with the Google Calendar tool, always set the

timeZone

field explicitly in your event payload. For example:

json
{
  "summary": "Appointment",
  "startDateTime": "2025-05-27T14:00:00",
  "endDateTime": "2025-05-27T14:30:00",
  "timeZone": "Asia/Kolkata"
}

Make sure your

startDateTime

and

endDateTime

are in ISO 8601 format and the

timeZone

matches your local time. This should resolve most time mismatch issues when creating events in Google Calendar. Source: - [Vapi Google Calendar Tool Documentation](https://docs.vapi.ai/tools/google-calendar#tool-configurations)