# Callback24

```json
{
  "name": "Callback24",
  "slug": "callback24",
  "url": "https://composio.dev/toolkits/callback24",
  "markdown_url": "https://composio.dev/toolkits/callback24.md",
  "logo_url": "https://logos.composio.dev/api/callback24",
  "categories": [
    "collaboration & communication"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-10-03T05:31:12.577Z"
}
```

![Callback24 logo](https://logos.composio.dev/api/callback24)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Callback24 MCP or direct API to manage calls, create users, update services, and configure routing groups through natural language.

## Summary

Callback24 is a telephony API for managing phone calls, users, services, and routing groups.
It centralizes call control and routing to automate voice workflows and operations.

## Categories

- collaboration & communication

## Toolkit Details

- Tools: 27

## Images

- Logo: https://logos.composio.dev/api/callback24

## Authentication

- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for Callback24.
  - Setup:
    - Configure Api Key credentials for Callback24.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

- Place an outbound call to +15551234 now
- Create voicemail transcription for latest call
- List active routing groups and members

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `CALLBACK24_ASSIGN_USER_TO_SERVICE` | Assign User to Service | Assign a Callback24 user to a service, optionally within a routing group. |
| `CALLBACK24_BATCH_ASSIGN_USERS_TO_SERVICE` | Batch Assign Users to Service | Sequentially assign 1-25 Callback24 users to one service. This operation is non-atomic and has no rollback: processing stops after the first provider failure, malformed success response, or transport error. The attempted user can be marked unknown when the assignment may have occurred; verify membership before retrying. All remaining users are marked not_attempted. |
| `CALLBACK24_BATCH_REMOVE_USERS_FROM_SERVICE` | Batch Remove Users from Service | Sequentially remove 1-25 users from a Callback24 service. This operation is non-atomic and provides no rollback: processing stops after the first provider failure, malformed success response, or transport error. The attempted user can be marked unknown when removal may have occurred; verify membership before retrying. Remaining users are marked not_attempted. |
| `CALLBACK24_CANCEL_UPCOMING_PHONE_CALLS` | Cancel Upcoming Phone Calls | Irreversibly bulk-cancel every upcoming phone call matching a phone number or lead reference. Optionally narrow the destructive operation by earliest scheduled time and service. The reason is permanently appended to each cancelled call's comments and defaults to 'Canceled by API, no reason'. |
| `CALLBACK24_CREATE_GROUP` | Create Group | Create a routing group within a Callback24 service, with optional localized names. |
| `CALLBACK24_CREATE_PHONE_CALL` | Create Phone Call | Create or schedule a real phone call in Callback24. This action can trigger customer-visible telephony to the supplied recipient phone number. |
| `CALLBACK24_CREATE_SERVICE` | Create Service | Create a Callback24 service for a website. This can create customer-visible widget or routing configuration. |
| `CALLBACK24_CREATE_USER` | Create User | Create a company user in Callback24. This may send an invitation and may consume an account seat. |
| `CALLBACK24_DELETE_GROUP` | Delete Group | Permanently and irreversibly delete one Callback24 routing group by group ID. This deletion cannot be undone. |
| `CALLBACK24_DELETE_SERVICE` | Delete Service | Permanently and irreversibly delete one Callback24 service and its associated routing and customer-facing widget configuration. This operation cannot be undone. |
| `CALLBACK24_DELETE_USER` | Delete User | Permanently and irreversibly delete one company user by Callback24 user ID. This operation cannot be undone. |
| `CALLBACK24_GET_CURRENT_USER` | Get Current User | Return the Callback24 user identity associated with the connected API token. |
| `CALLBACK24_GET_GROUP` | Get Group | Return one Callback24 routing group by ID with its service ID and localized names. |
| `CALLBACK24_GET_PHONE_CALL` | Get Phone Call | Return detailed metadata, tags, and assigned-user information for one Callback24 phone call. |
| `CALLBACK24_GET_PHONE_CALL_RECORDING` | Get Phone Call Recording | Return the recording URL for one recorded phone call. |
| `CALLBACK24_GET_SERVICE` | Get Service | Return one Callback24 service with opening hours, routing groups, and assigned users. |
| `CALLBACK24_GET_USER` | Get User | Return one company user by Callback24 user ID. |
| `CALLBACK24_LIST_GROUPS` | List Groups | Return all Callback24 routing groups with their service IDs and localized names. |
| `CALLBACK24_LIST_PHONE_CALLS` | List Phone Calls | Return one page of phone-call history, optionally filtered by type, date range, phone number, users, or services. Use limit with either page or offset to paginate; Callback24 does not document precedence, so do not combine page with a nonzero offset. |
| `CALLBACK24_LIST_SERVICES` | List Services | Return all Callback24 services with their nested groups, assigned users, and opening hours. |
| `CALLBACK24_LIST_USERS` | List Users | Return all company users visible to the connected Callback24 account. |
| `CALLBACK24_REMOVE_USER_FROM_SERVICE` | Remove User from Service | Remove a Callback24 user's assignment from a service, optionally within a routing group. |
| `CALLBACK24_UPDATE_GROUP` | Update Group | Update one or more localized names for a Callback24 routing group. |
| `CALLBACK24_UPDATE_PHONE_CALL` | Update Phone Call | Update editable metadata for an existing phone call without changing its explicit cancellation or start/end status fields. Provide at least one editable field in addition to call_id. |
| `CALLBACK24_UPDATE_PHONE_CALL_STATUS` | Update Phone Call Status | Set a phone call's cancelled flag and/or recorded start and end times; this changes operational call state. Provide at least one of cancelled, call_start_time, or call_end_time. |
| `CALLBACK24_UPDATE_SERVICE` | Update Service | Change the website configured for an existing Callback24 service. |
| `CALLBACK24_UPDATE_USER` | Update User | Update one or more profile or role fields for an existing Callback24 company user. Provide at least one of first_name, last_name, email, phone_number, or role. |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK
```python
pip install composio_openai
```

```typescript
npm install @composio/openai
```

#### Path 1, Step 2: Initialize Composio and Create Tool Router Session

Import and initialize Composio client, then create a Tool Router session
```python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
```

```typescript
import OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';

const composio = new Composio({
  provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');
```

#### Path 1, Step 3: Execute Callback24 Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute Callback24 actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'YOUR_SPECIFIC_PROMPT_HERE'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
```

```typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'YOUR_SPECIFIC_PROMPT_HERE'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK for Python or TypeScript
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcp
```

#### Path 2, Step 2: Initialize Client and Create Tool Router Session

Import and initialize the Composio client, then create a Tool Router session for Callback24
```python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
```

```typescript
import { Composio } from '@composio/core';

const composio = new Composio({ apiKey: 'your-api-key' });
const session = await composio.create('your-user-id');
console.log(`Tool Router session created: ${session.mcp.url}`);
```

#### Path 2, Step 3: Connect to AI Agent

Use the MCP server with your AI agent (Anthropic Claude or Mastra)
```python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Callback24 tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('YOUR_SPECIFIC_PROMPT_HERE')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: session.mcp.url,
    headers: {
      'x-api-key': 'your-composio-api-key',
    },
  },
});

const tools = await client.tools();
const { text } = await generateText({
  model: openai('gpt-4o'),
  tools,
  messages: [{
    role: 'user',
    content: 'YOUR_SPECIFIC_PROMPT_HERE'
  }],
  maxSteps: 5,
});

console.log(`Agent: ${text}`);
```

## Why Use Composio?

### 1. AI Native Callback24 Integration

- Supports both Callback24 MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Callback24 data

### 2. Managed Auth

- Built-in OAuth handling with automatic token refresh and rotation
- Central place to manage, scope, and revoke Callback24 access
- Per user and per environment credentials instead of hard-coded keys

### 3. Agent Optimized Design

- Tools are tuned using real error and success rates to improve reliability over time
- Comprehensive execution logs so you always know what ran, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access Callback24
- Scoped, least privilege access to Callback24 resources
- Full audit trail of agent actions to support review and compliance

## Use Callback24 with any AI Agent Framework

Choose a framework you want to connect Callback24 with:

- [ChatGPT](https://composio.dev/toolkits/callback24/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/callback24/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/callback24/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/callback24/framework/atomic-agent)

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- [Microsoft teams](https://composio.dev/toolkits/microsoft_teams) - Microsoft Teams is a collaboration platform that combines chat, meetings, and file sharing within Microsoft 365. It keeps distributed teams connected and productive through seamless virtual communication.
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- [Dailybot](https://composio.dev/toolkits/dailybot) - DailyBot streamlines team collaboration with chat-based standups, reminders, and polls. It keeps work flowing smoothly in your favorite messaging platforms.
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## Frequently Asked Questions

### Do I need my own developer credentials to use Callback24 with Composio?

Yes, Callback24 requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)