# Instantly when the assistant requires it — Vapi

Botize method — `vapi.webhook_message` (trigger).

This task is executed automatically by the assistant the moment it determines it is required.

This is a trigger: it starts the task. A task has exactly one.

## Fields you set

The field's internal name, its type and the values it accepts. These fields accept `{{...}}` tags from earlier steps.

- `tool_description` *(string)* — Task description
- `async` *(boolean)* — Task executes asynchronously

It also accepts repeatable field groups, with these prefixes: `tagname_*`, `tagtitle_*`, `tagtype_*`, `tagenum_*`, `tagdesc_*`, `tagrequired_*`. These are composite components (buttons, filters, keyboards); the trailing number is set by the user as they are added.

## Output variables

Data this step makes available. Reference them in later steps with the double-brace tag.

- `{{tool_call_id}}` *(text)* — Call ID

## Account

Needs a connected Vapi account in Botize: https://botize.com/en/app/vapi/authenticate

## This app

Every trigger and action for Vapi: https://botize.com/en/app/vapi.md

## How to build this

An AI assistant (Claude, ChatGPT, Cursor…) can create and edit these tasks in the user's account through the Botize MCP connector, included in every plan:

    https://webhook.botize.es/mcp

- Connection guide: https://botize.com/en/mcp
- Agent map: https://botize.com/llms.txt
- New account: https://botize.com/en/join (500 free operations, no card)

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Machine-readable summary for AI assistants. Human version: https://botize.com/en/method/vapi/webhook_message