---
title: "Stop AI Assistant"
method: POST
path: "/calls/{call_control_id}/actions/ai_assistant_stop"
tags: ["Call Commands"]
---

# Stop AI Assistant

`POST /calls/{call_control_id}/actions/ai_assistant_stop`

## Request

- Base URL: `https://api.telnyx.com/v2`
- URL: `https://api.telnyx.com/v2/calls/{call_control_id}/actions/ai_assistant_stop`
- Auth: HTTP bearer

Stops the AI assistant currently engaged on the call. The call remains active and can continue with other call control commands.

## Path parameters

- `call_control_id` string, required

## Request body

- AIAssistantStopRequest
  - `client_state` string: Use this field to add state to every subsequent webhook. It must be a valid Base-64 encoded string.
  - `command_id` string: Use this field to avoid duplicate commands. Telnyx will ignore any command with the same `command_id` for the same `call_control_id`.

## Response `200`

Successful response upon making a call control command.

- object
  - `data` CallControlCommandResult
    - `result` string

## Other responses

- `422`: Unprocessable entity. The request was well-formed but could not be processed due to semantic errors. This includes validation errors, invalid parameter values, call state errors, conference errors, queue errors, recording/transcription errors, and business logic violations.
- `default`: Unexpected error

## Changes

> 152 revisions in range; 1 not diffed.

- **2026-08-17** `1571b0380bd7`: 3 breaking
  - the response's body type changed from `object` to no type for status `default`
  - the `errors/items/` response's property type changed from `object` to no type for status `default`
  - the `errors/items/code` response's property type changed from `integer` to `string`, and format from `int32` to `integer` for status `default`
- **2026-08-04** `8f5f4e537994`: 4 breaking
  - the response's body type changed from no type to `object` for status `default`
  - the `errors/items/` response's property type changed from no type to `object` for status `default`
  - the `errors/items/code` response's property type changed from `string` to `integer`, and format from `integer` to `int32` for status `default`
  - the `errors/items/source/pointer` response's property format changed from `json-pointer` to no format for status `default`

[Operation history](https://skmtc.dev/team-telnyx/apis/telnyx-api-2/changes/calls/:call_control_id/actions/ai_assistant_stop/post.md)

---

[API](https://skmtc.dev/team-telnyx/apis/telnyx-api-2.md) - [All operations](https://skmtc.dev/team-telnyx/apis/telnyx-api-2/llms.txt) - [OpenAPI document](https://skmtc.dev/team-telnyx/apis/telnyx-api-2/revisions/f82938f53ff4?raw)