How to integrate Aircall MCP with Autogen

This guide walks you through connecting Aircall to AutoGen using the Composio tool router. By the end, you'll have a working Aircall agent that can manage calls, search contacts, update teams, organize phone numbers, and apply tags through natural language commands. This guide will help you understand how to give your AutoGen agent real control over a Aircall account through Composio's Aircall MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

Aircall logoAircall
Oauth2Basic

Aircall is a cloud-based phone and call-center platform for business communications. It centralizes calls, contacts, teams, numbers, and tags in one place.

48 Tools

Introduction

This guide walks you through connecting Aircall to AutoGen using the Composio tool router. By the end, you'll have a working Aircall agent that can manage calls, search contacts, update teams, organize phone numbers, and apply tags through natural language commands.

This guide will help you understand how to give your AutoGen agent real control over a Aircall account through Composio's Aircall MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

Also integrate Aircall with

TL;DR

Here's what you'll learn:
  • Get and set up your OpenAI and Composio API keys
  • Install the required dependencies for Autogen and Composio
  • Initialize Composio and create a Tool Router session for Aircall
  • Wire that MCP URL into Autogen using McpWorkbench and StreamableHttpServerParams
  • Configure an Autogen AssistantAgent that can call Aircall tools
  • Run a live chat loop where you ask the agent to perform Aircall operations

What is AutoGen?

Autogen is a framework for building multi-agent conversational AI systems from Microsoft. It enables you to create agents that can collaborate, use tools, and maintain complex workflows.

Key features include:

  • Multi-Agent Systems: Build collaborative agent workflows
  • MCP Workbench: Native support for Model Context Protocol tools
  • Streaming HTTP: Connect to external services through streamable HTTP
  • AssistantAgent: Pre-built agent class for tool-using assistants

What is the Aircall MCP server, and what's possible with it?

The Aircall MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Aircall account. It provides structured and secure access to your Aircall calls, users, teams, phone numbers, contacts, tags, and webhooks, so your agent can place calls, search call activity, manage contacts and teams, check user availability, and control call features on your behalf.

  • Call handling and insight: Have your agent place outbound calls, find calls by direction, user, phone number, tags, or date, add comments, manage recording during ongoing calls, delete call audio, and publish insight cards for call agents.
  • Contact management: Let the agent search, create, view, and delete shared contacts, then add or remove their phone numbers and email addresses.
  • User and team administration: Direct your agent to list, create, view, and delete users, create or remove teams, change team membership, and check user availability.
  • Phone numbers and tags: Instruct your agent to list and inspect Aircall phone numbers, check registration status, and create, view, list, or delete call tags.
  • Webhook management: Have your agent create, list, inspect, or delete Aircall webhooks for connected HTTPS destinations.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step08 STEPS
1

Prerequisites

You will need:

  • A Composio API key
  • An OpenAI API key (used by Autogen's OpenAIChatCompletionClient)
  • A Aircall account you can connect to Composio
  • Some basic familiarity with Autogen and Python async
2

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key. You'll need credits to use the models, or you can connect to another model provider.
  • Keep the API key safe.
Composio API Key
  • Log in to the Composio dashboard.
  • Navigate to your API settings and generate a new API key.
  • Store this key securely as you'll need it for authentication.
3

Install dependencies

bash
pip install composio python-dotenv
pip install autogen-agentchat autogen-ext-openai autogen-ext-tools

Install Composio, Autogen extensions, and dotenv.

What's happening:

  • composio connects your agent to Aircall via MCP
  • autogen-agentchat provides the AssistantAgent class
  • autogen-ext-openai provides the OpenAI model client
  • autogen-ext-tools provides MCP workbench support

4

Set up environment variables

bash
COMPOSIO_API_KEY=your-composio-api-key
OPENAI_API_KEY=your-openai-api-key
USER_ID=your-user-identifier@example.com

Create a .env file in your project folder.

What's happening:

  • COMPOSIO_API_KEY is required to talk to Composio
  • OPENAI_API_KEY is used by Autogen's OpenAI client
  • USER_ID is how Composio identifies which user's Aircall connections to use
5

Import dependencies and create Tool Router session

python
import asyncio
import os
from dotenv import load_dotenv
from composio import Composio

from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient
from autogen_ext.tools.mcp import McpWorkbench, StreamableHttpServerParams

load_dotenv()

async def main():
    # Initialize Composio and create a Aircall session
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    session = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["aircall"]
    )
    url = session.mcp.url
What's happening:
  • load_dotenv() reads your .env file
  • Composio(api_key=...) initializes the SDK
  • create(...) creates a Tool Router session that exposes Aircall tools
  • session.mcp.url is the MCP endpoint that Autogen will connect to
6

Configure MCP parameters for Autogen

python
# Configure MCP server parameters for Streamable HTTP
server_params = StreamableHttpServerParams(
    url=url,
    timeout=30.0,
    sse_read_timeout=300.0,
    terminate_on_close=True,
    headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
)

Autogen expects parameters describing how to talk to the MCP server. That is what StreamableHttpServerParams is for.

What's happening:

  • url points to the Tool Router MCP endpoint from Composio
  • timeout is the HTTP timeout for requests
  • sse_read_timeout controls how long to wait when streaming responses
  • terminate_on_close=True cleans up the MCP server process when the workbench is closed
7

Create the model client and agent

python
# Create model client
model_client = OpenAIChatCompletionClient(
    model="gpt-5",
    api_key=os.getenv("OPENAI_API_KEY")
)

# Use McpWorkbench as context manager
async with McpWorkbench(server_params) as workbench:
    # Create Aircall assistant agent with MCP tools
    agent = AssistantAgent(
        name="aircall_assistant",
        description="An AI assistant that helps with Aircall operations.",
        model_client=model_client,
        workbench=workbench,
        model_client_stream=True,
        max_tool_iterations=10
    )

What's happening:

  • OpenAIChatCompletionClient wraps the OpenAI model for Autogen
  • McpWorkbench connects the agent to the MCP tools
  • AssistantAgent is configured with the Aircall tools from the workbench
8

Run the interactive chat loop

python
print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
print("Ask any Aircall related question or task to the agent.\n")

# Conversation loop
while True:
    user_input = input("You: ").strip()

    if user_input.lower() in ["exit", "quit", "bye"]:
        print("\nGoodbye!")
        break

    if not user_input:
        continue

    print("\nAgent is thinking...\n")

    # Run the agent with streaming
    try:
        response_text = ""
        async for message in agent.run_stream(task=user_input):
            if hasattr(message, "content") and message.content:
                response_text = message.content

        # Print the final response
        if response_text:
            print(f"Agent: {response_text}\n")
        else:
            print("Agent: I encountered an issue processing your request.\n")

    except Exception as e:
        print(f"Agent: Sorry, I encountered an error: {str(e)}\n")
What's happening:
  • The script prompts you in a loop with You:
  • Autogen passes your input to the model, which decides which Aircall tools to call via MCP
  • agent.run_stream(...) yields streaming messages as the agent thinks and calls tools
  • Typing exit, quit, or bye ends the loop

Complete Code

Here's the complete code to get you started with Aircall and AutoGen:

python
import asyncio
import os
from dotenv import load_dotenv
from composio import Composio

from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient
from autogen_ext.tools.mcp import McpWorkbench, StreamableHttpServerParams

load_dotenv()

async def main():
    # Initialize Composio and create a Aircall session
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    session = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["aircall"]
    )
    url = session.mcp.url

    # Configure MCP server parameters for Streamable HTTP
    server_params = StreamableHttpServerParams(
        url=url,
        timeout=30.0,
        sse_read_timeout=300.0,
        terminate_on_close=True,
        headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
    )

    # Create model client
    model_client = OpenAIChatCompletionClient(
        model="gpt-5",
        api_key=os.getenv("OPENAI_API_KEY")
    )

    # Use McpWorkbench as context manager
    async with McpWorkbench(server_params) as workbench:
        # Create Aircall assistant agent with MCP tools
        agent = AssistantAgent(
            name="aircall_assistant",
            description="An AI assistant that helps with Aircall operations.",
            model_client=model_client,
            workbench=workbench,
            model_client_stream=True,
            max_tool_iterations=10
        )

        print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
        print("Ask any Aircall related question or task to the agent.\n")

        # Conversation loop
        while True:
            user_input = input("You: ").strip()

            if user_input.lower() in ['exit', 'quit', 'bye']:
                print("\nGoodbye!")
                break

            if not user_input:
                continue

            print("\nAgent is thinking...\n")

            # Run the agent with streaming
            try:
                response_text = ""
                async for message in agent.run_stream(task=user_input):
                    if hasattr(message, 'content') and message.content:
                        response_text = message.content

                # Print the final response
                if response_text:
                    print(f"Agent: {response_text}\n")
                else:
                    print("Agent: I encountered an issue processing your request.\n")

            except Exception as e:
                print(f"Agent: Sorry, I encountered an error: {str(e)}\n")

if __name__ == "__main__":
    asyncio.run(main())

Conclusion

You now have an Autogen assistant wired into Aircall through Composio's Tool Router and MCP. From here you can:
  • Add more toolkits to the toolkits list, for example notion or hubspot
  • Refine the agent description to point it at specific workflows
  • Wrap this script behind a UI, Slack bot, or internal tool
Once the pattern is clear for Aircall, you can reuse the same structure for other MCP-enabled apps with minimal code changes.
TOOLS

Supported Tools

Every Aircall action and event your agent gets out of the box.

Add Contact Method

Add a phone number or an email address to an existing Aircall contact.

Add User to Team

Add a User to a Team (membership change).

Add Comment to Call

Add a comment/note to a Call (max 5 comments per call; emojis are stripped).

Create Contact

Create a shared Aircall contact.

Create Tag

Create a Tag.

Create Team

Create a new Team.

Create User

Create an Aircall user and send them a real invitation email, consuming a licensed seat.

Create Webhook

Create an Aircall webhook targeting a public HTTPS URL.

Delete Call Media

Request permanent deletion of a Call's audio recording or voicemail, for compliance or data governance.

Delete Contact

Permanently delete a shared Contact and all of its phone numbers and email addresses.

Delete Contact Method

Permanently remove one phone number or email address from an Aircall contact.

Delete Tag

Delete a Tag by id.

Delete Team

Delete a Team by id.

Delete User

Permanently delete a User.

Delete Webhook

Permanently delete an Aircall webhook.

Get Call

Retrieve a single Call by id, with optional contact / short-url / timeline enrichment via the fetch_* flags.

Get Company

Retrieve information about the connected Aircall company (name, users_count, numbers_count).

Get Contact

Retrieve a single shared Contact by id, with its nested phone_numbers[] and emails[].

Get Number

Retrieve a single Aircall phone Number by its numeric id.

Get Number Registration Status

Check whether an Aircall phone number is registered for compliance (10DLC or other regulatory registration) by reading the `status` field.

Get Tag

Retrieve a single Tag by id.

Get Team

Retrieve a single Team by id, including its member users.

Get User

Retrieve one Aircall user by numeric id or by email address.

Get User Availability

Check the current availability of one User.

Get Webhook

Retrieve one Aircall webhook by its UUID or legacy numeric id.

List Calls

List the account's calls in chronological order, covering about 6 months of history and at most 10,000 items via pagination.

List Contacts

List all shared Contacts (hard-capped at 10,000 items via pagination — window past with the `from` timestamp).

List Numbers

List all Aircall phone Numbers in the account.

List Tags

List all Tags in the account.

List Teams

List all Teams in the account.

List User Numbers (V2)

List all Aircall Numbers assigned to a specific User (V2, paginated).

List Users

List the users in the Aircall account, one page at a time with a next_cursor to continue.

List Users Availability

List the detailed availability of all Users (whether each user is available/offline/on a call, etc.

List Webhooks

List webhook subscriptions accessible to the connected Aircall company.

Publish Call Insight Card

Display contextual title, short text, links, or Aircall user details to the agent handling an ongoing call.

Remove User from Team

Remove a User from a Team (membership change).

Search Calls

Find calls matching any combination of direction (inbound or outbound), user_id, phone_number and tag ids, optionally narrowed to a from/to date window.

Search Contacts

Search shared Contacts by phone_number and/or email (optionally within a from/to date window).

Set Call Recording State

Pause or resume recording on an ongoing Aircall call.

Start Outbound Call

Place a real, billable outbound phone call from an Aircall user's desktop Workspace to an external number.

Tag Call

Tag a Call with one or more existing Tag ids (create tags first with AIRCALL_CREATE_TAG).

Transfer Call

Cold-transfer a call that is live right now to one user, one team, or one external phone number.

Update Contact

Update a Contact's core fields (first_name, last_name, company_name, information).

Update Contact Method

Update one phone number or email address that is already on an Aircall contact.

Update Number

Update at least one mutable Number field: name changes its display name; availability_status changes the first Time Rule widget and can open or close call routing; live_recording_activated enables or disables inbound and outbound recording, and audio missed while disabled cannot be recovered; priority changes routing priority; messages replaces or clears supplied Music & Messages audio slots heard by live callers.

Update Tag

Update a Tag (PUT, full replace).

Update User

Update an existing Aircall user's name, availability_status, substatus, roles or wrap-up time in place.

Update Webhook

Update an Aircall webhook's URL, name, active state, or event subscriptions.

FAQ

Frequently asked questions

With a standalone Aircall MCP server, the agents and LLMs can only access a fixed set of Aircall tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Aircall and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Autogen fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Aircall tools.

Yes, absolutely. You can configure which Aircall scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Aircall data and credentials are handled as safely as possible.

Start with Aircall.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Aircall tool your agent needs.Free to start.

Start building