Thiago
01/31/2026, 2:49 AMAI Evy
01/31/2026, 2:49 AMAI Evy
01/31/2026, 2:49 AMAI Evy
01/31/2026, 2:49 AMAI Evy
01/31/2026, 2:50 AM"TRANSFER SUCCESSFUL. You are a new assistant agent..." message) .
For warm transfers specifically, you can configure:
- **Whisper message**: A message spoken privately to the transfer target before connecting them to the original caller [(2) ]()
- **Three-way message**: A message spoken to both the transfer target and the original caller once the connection is established
However, these are spoken messages during the transfer process, not the JSON status returned to the LLM.
If you're using a Custom LLM via WebSocket, you have more control over how tool call results are processed. You can send tool call result events with custom content using the tool_call_result response type. [(3) ]()
I'd recommend reaching out directly for clarification on whether the agent transfer tool result message can be customized:
- [Contact Sales]()
- [Retell AI GitHub]()
Would you like me to provide a general answer based on my knowledge instead?