I’m building an integration where our AI agent listens to live calls, generates coaching tips, and displays them in our UI—but we need the agent to remain completely silent (no TTS or audio playback on the call). We want to ensure: The agent never speaks or plays audio during the call. We continue to receive all transcripts and model outputs via webhook for our UI.

I understand you need a silent AI agent that listens to calls and sends data to your UI without any audio playback. Based on the information available, there are several ways to achieve this. Have you already set up your Vapi assistant, and if so, which specific configuration options have you tried to disable the TTS/audio playback? This would help me recommend the most appropriate solution for your use case. Sources: - [Discord discussion on silent agents](https://discord.com/channels/1211482211119796234/1335807780287676456) - [Vapi documentation on silent transfers](https://docs.vapi.ai/squads/silent-transfers) - [Vapi documentation on webhooks](https://discord.com/channels/1211482211119796234/1341440757189578782)

Disable the voice parameter, turn off backchanneling, and configure webhooks to stream data to your UI for coaching insights..