Alex
11/25/2025, 3:19 PMAlex
11/25/2025, 3:19 PM{"customer":{"number":"..."},"phoneNumberId":"...","assistant":{"voice":{"provider":"vapi","voiceId":"Elliot","speed":0.75},"firstMessageMode":"assistant-waits-for-user","voicemailDetection":{"provider":"vapi"},"backgroundSound":"off","modelOutputInMessagesEnabled":true,"model":{"provider":"openai","model":"gpt-4o","messages":[{"role":"system","content":"..."}],"temperature":0},"firstMessage":"...","endCallFunctionEnabled":true,"endCallMessage":"Goodbye.","transcriber":{"model":"nova-2","language":"en","provider":"deepgram","confidenceThreshold":0.3},"startSpeakingPlan":{"waitSeconds":0.9,"smartEndpointingPlan":{"provider":"vapi"}},"stopSpeakingPlan":{"voiceSeconds":0.3}}}
> }Alex
11/25/2025, 3:19 PMVapi Support Bot
11/25/2025, 3:20 PMmonitor object in your call response, make sure your assistant's configuration includes the following:
json
"monitorPlan": {
"listenEnabled": true,
"controlEnabled": true
}
Update your assistant settings with this configuration, then try creating the call again. This should enable the monitor object as described in the [Live Call Control documentation](https://docs.vapi.ai/calls/call-features).
Source:
- [Live Call Control documentation](https://docs.vapi.ai/calls/call-features)Alex
11/25/2025, 3:27 PMChiranjeet Mishra
11/27/2025, 6:17 PMlistenUrl and controlUrl for live call monitoring, you need to send a POST request to the /call endpoint. You can find a sample request and response along with further instructions [here](https://docs.vapi.ai/calls/call-features).
If you have any specific questions about live calls or encounter any issues while implementing, feel free to let me know.Alex
12/09/2025, 4:57 AMChiranjeet Mishra
12/10/2025, 11:36 PM