## Create a chat

`POST /v1/bots/:botId/chats`

Creates a new group chat on behalf of the bot.

## Request fields (body)

| Parameter | Type | Req. | Description |
|----------|-----|:-----:|---------|
| `fields.title` | string | no | Chat name |
| `fields.description` | string | no | Chat description |
| `fields.color` | string | no | Chat color (16 named colors). If the value is invalid, a color is assigned automatically |
| `fields.avatar` | string | no | Chat avatar URL |
| `fields.userIds` | number[] | no | Array of user IDs to add |
| `fields.ownerId` | number | no | Owner ID. If not specified, the bot becomes the owner |
| `fields.message` | string | no | First message in the chat |

## Examples

### curl — personal key

```bash
curl -X POST https://vibecode.bitrix24.com/v1/bots/42/chats \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "fields": {
      "title": "Support chat",
      "description": "Technical support channel",
      "userIds": [1, 5, 12],
      "color": "AZURE"
    }
  }'
```

### curl — OAuth application

```bash
curl -X POST https://vibecode.bitrix24.com/v1/bots/42/chats \
  -H "X-Api-Key: YOUR_APP_KEY" \
  -H "Authorization: Bearer USER_SESSION_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "fields": {
      "title": "Support chat",
      "description": "Technical support channel",
      "userIds": [1, 5, 12],
      "color": "AZURE"
    }
  }'
```

### JavaScript — personal key

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/bots/42/chats', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    fields: {
      title: 'Support chat',
      description: 'Technical support channel',
      userIds: [1, 5, 12],
      color: 'AZURE',
    },
  }),
})

const { success, data } = await res.json()
console.log('Chat ID:', data.chatId)
```

### JavaScript — OAuth application

```javascript
const res = await fetch('https://vibecode.bitrix24.com/v1/bots/42/chats', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_APP_KEY',
    'Authorization': 'Bearer USER_SESSION_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    fields: {
      title: 'Support chat',
      description: 'Technical support channel',
      userIds: [1, 5, 12],
      color: 'AZURE',
    },
  }),
})

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

## Response fields

| Field | Type | Description |
|------|-----|---------|
| `chat.id` | number | ID of the created chat |
| `chat.dialogId` | string | Dialog ID (`chatXXX`) |
| `chat.name` | string | Chat name |
| `chat.owner` | number | Owner ID |
| `chat.type` | string | Chat type |
| `chat.color` | string | Chat color |
| `chat.dateCreate` | string | Creation date (ISO 8601) |
| `chat.permissions` | object | Chat permissions |
| `users` | array | Array of chat participants |

## Response example

```json
{
  "success": true,
  "data": {
    "chat": {
      "id": 3555,
      "dialogId": "chat3555",
      "name": "Support chat",
      "type": "chat",
      "owner": 42,
      "color": "#4ba984",
      "description": "",
      "dateCreate": "2026-04-13T17:12:03+00:00",
      "permissions": {
        "manageUsersAdd": "member",
        "manageUsersDelete": "manager",
        "manageSettings": "owner",
        "canPost": "member"
      }
    },
    "users": [
      {
        "id": 42,
        "name": "Support",
        "active": true,
        "bot": 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 while creating the chat |
| 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

**Default owner:** if `ownerId` is not specified, the bot becomes the chat owner.

**Invalid colors:** if you pass a non-existent color, Bitrix24 assigns a color automatically.

## See also

- [Get a chat](/docs/bots/chats/get)
- [Add participants](/docs/bots/chats/user-add)
- [Messages](/docs/bots/messages)
- [Bot platform](/docs/bots)
- [Limits and optimization](/docs/optimization)