How to integrate Aircall MCP with OpenAI Agents SDK

This guide walks you through connecting Aircall to the OpenAI Agents SDK 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 OpenAI Agents SDK 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.

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Aircall

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

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Introduction

This guide will help you understand how to give your OpenAI Agents SDK 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

Claude Agent SDK Claude Code Claude Cowork Codex OpenClaw Hermes CLI Google ADK LangChain Vercel AI SDK Mastra AI LlamaIndex CrewAI

TL;DR

Here's what you'll learn:

Get and set up your OpenAI and Composio API keys
Install the necessary dependencies
Initialize Composio and create a Tool Router session for Aircall
Configure an AI agent that can use Aircall as a tool
Run a live chat session where you can ask the agent to perform Aircall operations

What is OpenAI Agents SDK?

The OpenAI Agents SDK is a lightweight framework for building AI agents that can use tools and maintain conversation state. It provides a simple interface for creating agents with hosted MCP tool support.

Key features include:

Hosted MCP Tools: Connect to external services through hosted MCP endpoints
SQLite Sessions: Persist conversation history across interactions
Simple API: Clean interface with Agent, Runner, and tool configuration
Streaming Support: Real-time response streaming for interactive applications

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:

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

Step-by-step Guide

Step by step09 STEPS

Prerequisites

Before starting, make sure you have:

Composio API Key and OpenAI API Key
Primary know-how of OpenAI Agents SDK
A live Aircall project
Some knowledge of Python or Typescript

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.
Go to Settings and copy your API key.

Install dependencies

npm install @composio/openai-agents @openai/agents dotenv

Install the Composio SDK and the OpenAI Agents SDK.

Set up environment variables

bash

OPENAI_API_KEY=sk-...your-api-key
COMPOSIO_API_KEY=your-api-key
USER_ID=composio_user@gmail.com

Create a .env file and add your OpenAI and Composio API keys.

Import dependencies

import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';

What's happening:

You're importing all necessary libraries.
The Composio and OpenAIAgentsProvider classes are imported to connect your OpenAI agent to Composio tools like Aircall.

Set up the Composio instance

dotenv.config();

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.USER_ID;

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});

What's happening:

dotenv.config() loads your .env file so COMPOSIO_API_KEY and USER_ID are available as environment variables.
Creating a Composio instance using the API Key and OpenAIAgentsProvider class.

Create a Tool Router session

// Create Tool Router session for Aircall
const session = await composio.create(userId as string, {
  toolkits: ['aircall'],
});
const mcpUrl = session.mcp.url;

What is happening:

You give the Tool Router the user id and the toolkits you want available. Here, it is only aircall.
The router checks the user's Aircall connection and prepares the MCP endpoint.
The returned session.mcp.url is the MCP URL that your agent will use to access Aircall.
This approach keeps things lightweight and lets the agent request Aircall tools only when needed during the conversation.

Configure the agent

// Configure agent with MCP tool
const agent = new Agent({
  name: 'Assistant',
  model: 'gpt-5',
  instructions:
    'You are a helpful assistant that can access Aircall. Help users perform Aircall operations through natural language.',
  tools: [
    hostedMcpTool({
      serverLabel: 'tool_router',
      serverUrl: mcpUrl,
      headers: { 'x-api-key': composioApiKey },
      requireApproval: 'never',
    }),
  ],
});

What's happening:

We're creating an Agent instance with a name, model (gpt-5), and clear instructions about its purpose.
The agent's instructions tell it that it can access Aircall and help with queries, inserts, updates, authentication, and fetching database information.
The tools array includes a hostedMcpTool that connects to the MCP server URL we created earlier.
The headers object includes the Composio API key for secure authentication with the MCP server.
requireApproval: 'never' means the agent can execute Aircall operations without asking for permission each time, making interactions smoother.

Start chat loop and handle conversation

// Keep conversation state across turns
const conversationSession = new OpenAIConversationsSession();

// Simple CLI
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: 'You: ',
});

console.log('\nComposio Tool Router session created.');
console.log('\nChat started. Type your requests below.');
console.log("Commands: 'exit', 'quit', or 'q' to end\n");

try {
  const first = await run(agent, 'What can you help me with?', { session: conversationSession });
  console.log(`Assistant: ${first.finalOutput}\n`);
} catch (e) {
  console.error('Error:', e instanceof Error ? e.message : e, '\n');
}

rl.prompt();

rl.on('line', async (userInput) => {
  const text = userInput.trim();

  if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
    console.log('Goodbye!');
    rl.close();
    process.exit(0);
  }

  if (!text) {
    rl.prompt();
    return;
  }

  try {
    const result = await run(agent, text, { session: conversationSession });
    console.log(`\nAssistant: ${result.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();
});

rl.on('close', () => {
  console.log('\n👋 Session ended.');
  process.exit(0);
});

What's happening:

The program prints a session URL that you visit to authorize Aircall.
After authorization, the chat begins.
Each message you type is processed by the agent using run().
The responses are printed to the console.
Typing exit, quit, or q cleanly ends the chat.

Complete Code

Here's the complete code to get you started with Aircall and OpenAI Agents SDK:

import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.USER_ID;

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});

async function main() {
  // Create Tool Router session
  const session = await composio.create(userId as string, {
    toolkits: ['aircall'],
  });
  const mcpUrl = session.mcp.url;

  // Configure agent with MCP tool
  const agent = new Agent({
    name: 'Assistant',
    model: 'gpt-5',
    instructions:
      'You are a helpful assistant that can access Aircall. Help users perform Aircall operations through natural language.',
    tools: [
      hostedMcpTool({
        serverLabel: 'tool_router',
        serverUrl: mcpUrl,
        headers: { 'x-api-key': composioApiKey },
        requireApproval: 'never',
      }),
    ],
  });

  // Keep conversation state across turns
  const conversationSession = new OpenAIConversationsSession();

  // Simple CLI
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'You: ',
  });

  console.log('\nComposio Tool Router session created.');
  console.log('\nChat started. Type your requests below.');
  console.log("Commands: 'exit', 'quit', or 'q' to end\n");

  try {
    const first = await run(agent, 'What can you help me with?', { session: conversationSession });
    console.log(`Assistant: ${first.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();

  rl.on('line', async (userInput) => {
    const text = userInput.trim();

    if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
      console.log('Goodbye!');
      rl.close();
      process.exit(0);
    }

    if (!text) {
      rl.prompt();
      return;
    }

    try {
      const result = await run(agent, text, { session: conversationSession });
      console.log(`\nAssistant: ${result.finalOutput}\n`);
    } catch (e) {
      console.error('Error:', e instanceof Error ? e.message : e, '\n');
    }

    rl.prompt();
  });

  rl.on('close', () => {
    console.log('\nSession ended.');
    process.exit(0);
  });
}

main().catch((err) => {
  console.error('Fatal error:', err);
  process.exit(1);
});

Conclusion

This was a starter code for integrating Aircall MCP with OpenAI Agents SDK to build a functional AI agent that can interact with Aircall.

Key features:

Hosted MCP tool integration through Composio's Tool Router
SQLite session persistence for conversation history
Simple async chat loop for interactive testing

You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.

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.

FRAMEWORKS

How to build Aircall MCP Agent with another framework

Claude Agent SDK

Use Aircall MCP with Claude Agent SDK

Claude Code

Use Aircall MCP with Claude Code

Claude Cowork

Use Aircall MCP with Claude Cowork

Codex

Use Aircall MCP with Codex

OpenClaw

Use Aircall MCP with OpenClaw

Hermes

Use Aircall MCP with Hermes

CLI

Use Aircall MCP with CLI

Google ADK

Use Aircall MCP with Google ADK

LangChain

Use Aircall MCP with LangChain

Vercel AI SDK

Use Aircall MCP with Vercel AI SDK

Mastra AI

Use Aircall MCP with Mastra AI

LlamaIndex

Use Aircall MCP with LlamaIndex

CrewAI

Use Aircall MCP with CrewAI

MORE TOOLKITS

Explore Other Toolkits

Toolkit marketplace

Gong

BasicOauth2

Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action.

2chat

Api Key

2chat is an API platform for WhatsApp and multichannel text messaging. It streamlines chat automation, group management, and real-time messaging for developers.

Android Texter

Api Key

Android Texter is an API service that connects Android phones to SMS, MMS, contacts, and device data. Use it to automate mobile messaging without building your own phone-to-API bridge.

Blooio

Api Key

Blooio is a stable v2 API platform for messaging, chats, contacts, groups, phone numbers, and account analytics. It gives teams a clean way to build reliable communication workflows without stitching together fragile custom APIs.

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. OpenAI Agents SDK 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

Customer stories

Teams ship real agents on Composio

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Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati

Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya

Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave

CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu

Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola

Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Jerome Leclanche

Co-Founder, Ingram Technologies

How to integrate Aircall MCP with OpenAI Agents SDK

Connect Aircall without auth hassles

Introduction

Also integrate Aircall with

TL;DR

What is OpenAI Agents SDK?

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

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

What is Composio SDK?

How the Composio SDK works

Step-by-step Guide

Prerequisites

Getting API Keys for OpenAI and Composio

Install dependencies

Set up environment variables

Import dependencies

Set up the Composio instance

Create a Tool Router session

Configure the agent

Start chat loop and handle conversation

Complete Code

Conclusion

Supported Tools

How to build Aircall MCP Agent with another framework

Claude Agent SDK

Claude Code

Claude Cowork

Codex

OpenClaw

Hermes

CLI

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Explore Other Toolkits

Gong

2chat

Android Texter

Blooio

Frequently asked questions

What are the differences in Tool Router MCP and Aircall MCP?+

Can I use Tool Router MCP with OpenAI Agents SDK?+

Can I manage the permissions and scopes for Aircall while using Tool Router?+

How safe is my data with Composio Tool Router?+

Start with Aircall.It takes 30 seconds.

Teams ship real agents on Composio