I got an error where the agent goes to transfer the user, but instead of calling the transfer function, it instead says what I assume is the behind the scenes function JSON structure out loud to the caller. This is what happened: Agent: Okay, I’m not able to help with that directly. Are you okay if I transfer you to a service advisor now? 0:21 User: Yes. 0:27 Agent: {"execution_message":"Just a heads-up — if the advisor isn’t able to pick up right away, they’re likely helping other customers. Please leave a voicemail, and they’ll return your call as soon as they’re available.","transfer_destination_number":"+16174542933","transfer_number_extension":null} Just a heads-up — if the advisor isn’t able to pick up right away, they’re likely helping other customers. Please leave a voicemail, and they’ll return your call as soon as they’re available. Call ID: call_30d3aa3fc456deadc3a5666d66f.

make sure the agent is calling the transfer function, not describing it

which model are you using?

This one is using GPT 5.1. Does that model struggle with tool calling?

yes add specific instruction