Functions Overview

Functions are what let a chat agent do things rather than only say things — look up an order, send a brochure, book a callback. The model decides when to call one, based on its description, and you decide what it does.

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Available function types

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How the agent chooses

The model reads each function’s description — for custom functions, the docstring — and matches it against the conversation. Nothing else selects a function for it. That makes the description the most important field on the form. Two rules:

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Rounds

The agent may call functions across several rounds before replying, capped by Max Function Rounds (LLM Model, default 3). One round can chain into the next — look up the order, then look up the courier, then reply. The final reply is always one additional round on top.

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Two function lists

They are configured identically, and deliberately separate: a follow-up should usually be able to do far less than a live conversation.

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Testing before going live

Every function type has a test path in its own form:

• Custom functions — a Test Run tab that builds input fields from your function signature and executes it
• Send Template and the media types — a Test Send section that sends the real thing to a phone number you enter

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