Documentation / Agent tools
Agent tools (overview)
What tools are, how to enable them, and how to use them in the prompt.
Last updated:
A tool lets an agent do something beyond talking: end the call, transfer, press keys, or call your systems. You enable the tools an agent may use on the Tools tab; the agent only ever sees the ones you turn on.
How to reference a tool in the prompt#
Do not name the tool by its id in the system prompt. Instead, tell the agent when to take the action, in plain language. The platform already knows how each tool works.
- Good: "When the caller says goodbye, thank them and end the call."
- Good: "If they ask about billing, transfer them to the billing line."
- Avoid: "Call the end_call tool."
The following pages cover each built-in tool, what it does, and a copy-paste prompt line.