## Remove a participant

`DELETE /v1/bots/:botId/chats/:dialogId/users`

Removes a user from a chat.

## Request fields (body)

| Parameter | Type | Req. | Description |
|----------|-----|:-----:|---------|
| `userId` | number | yes | ID of the user to remove |

## Examples

### curl — personal key

```bash
curl -X DELETE https://vibecode.bitrix24.com/v1/bots/42/chats/chat456/users \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "userId": 12 }'
```

### curl — OAuth application

```bash
curl -X DELETE https://vibecode.bitrix24.com/v1/bots/42/chats/chat456/users \
  -H "X-Api-Key: YOUR_APP_KEY" \
  -H "Authorization: Bearer USER_SESSION_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{ "userId": 12 }'
```

### JavaScript — personal key

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/bots/42/chats/chat456/users', {
  method: 'DELETE',
  headers: {
    'X-Api-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({ userId: 12 }),
})

const { success, data } = await res.json()
```

### JavaScript — OAuth application

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/bots/42/chats/chat456/users', {
  method: 'DELETE',
  headers: {
    'X-Api-Key': 'YOUR_APP_KEY',
    'Authorization': 'Bearer USER_SESSION_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({ userId: 12 }),
})

const { success, data } = await res.json()
```

## Response fields

| Field | Type | Description |
|------|-----|---------|
| `data.result` | boolean | `true` on a successful removal |

## Response example

```json
{
  "success": true,
  "data": {
    "result": true
  }
}
```

## Error response example

404 — bot not found:

```json
{
  "success": false,
  "error": {
    "code": "BOT_NOT_FOUND",
    "message": "Bot 999 not found. Register it first via POST /v1/bots."
  }
}
```

## Errors

| HTTP | Code | Description |
|------|-----|---------|
| 400 | `INVALID_BOT_ID` | `botId` is not a number |
| 404 | `BOT_NOT_FOUND` | No bot found with this ID |
| 403 | `BOT_ACCESS_DENIED` | The bot belongs to another API key |
| 502 | `BITRIX_ERROR` | Bitrix24 error (error text in `message`) |
| 403 | `SCOPE_DENIED` | The API key does not have the `imbot` scope |
| 401 | `TOKEN_MISSING` | The API key has no configured tokens |

Full list of common API errors — [Errors](/docs/errors).

## Known specifics

**Idempotency:** the method returns `true` even if the user is no longer in the chat.

**Single user:** the endpoint accepts `userId` (a number), not an array. To remove several participants, call the endpoint for each one.

## See also

- [Add participants](/docs/bots/chats/user-add)
- [List participants](/docs/bots/chats/user-list)
- [Bot platform](/docs/bots)
- [Limits and optimization](/docs/optimization)