How to integrate Metaads MCP with LangChain

Connect LangChain to Metaads MCP. Get ad performance insights for last week, create a new campaign for summer sale, and more using natural language, with authentication handled for you.

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Metaads

Oauth2Api Key

Metaads is Meta's official Ads API that lets you manage, analyze, and optimize your Facebook and Instagram ad campaigns. Streamline ad operations and gain deeper insights with robust automation.

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Introduction

This guide walks you through connecting Metaads to LangChain using the Composio tool router. By the end, you'll have a working Metaads agent that can get ad performance insights for last week, create a new campaign for summer sale, pause all ads in underperforming campaigns through natural language commands.

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

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

TL;DR

Here's what you'll learn:

Get and set up your OpenAI and Composio API keys
Connect your Metaads project to Composio
Create a Tool Router MCP session for Metaads
Initialize an MCP client and retrieve Metaads tools
Build a LangChain agent that can interact with Metaads
Set up an interactive chat interface for testing

What is LangChain?

LangChain is a framework for developing applications powered by language models. It provides tools and abstractions for building agents that can reason, use tools, and maintain conversation context.

Key features include:

Agent Framework: Build agents that can use tools and make decisions
MCP Integration: Connect to external services through Model Context Protocol adapters
Memory Management: Maintain conversation history across interactions
Multi-Provider Support: Works with OpenAI, Anthropic, and other LLM providers

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

The Meta Ads MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Meta Ads account. It provides structured and secure access to your campaigns, ads, audiences, leads, performance insights, and business assets, so your agent can create campaigns, build ads, update campaigns, analyze results, and retrieve leads on your behalf.

Campaign and ad creation: Have your agent create campaigns, ad sets, ad creatives, and ads for your Meta advertising account.
Campaign updates: Direct your agent to update existing campaigns when your advertising plans or settings change.
Performance analysis: Let the agent retrieve insights for your advertising account, campaigns, ad sets, or ads to help you review results.
Audience and targeting research: Instruct your agent to create custom audiences and search available targeting options for upcoming campaigns.
Lead and asset discovery: Have your agent retrieve leads and list accessible businesses, advertising accounts, Facebook Pages, Instagram assets, campaigns, ads, and creatives.

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 step10 STEPS

Prerequisites

Before starting this tutorial, make sure you have:

Python 3.10 or higher installed on your system
A Composio account with an API key
An OpenAI API key
Basic familiarity with Python and async programming

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.

Install dependencies

npm install @composio/langchain @langchain/core @langchain/openai @langchain/mcp-adapters dotenv

Install the required packages for LangChain with MCP support.

What's happening:

@composio/langchain provides Composio integration for LangChain
@langchain/mcp-adapters enables MCP client connections
@langchain/core is the core agent framework
dotenv/config loads environment variables

Set up environment variables

bash

COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_composio_user_id_here
OPENAI_API_KEY=your_openai_api_key_here

Create a .env file in your project root.

What's happening:

COMPOSIO_API_KEY authenticates your requests to Composio's API
COMPOSIO_USER_ID identifies the user for session management
OPENAI_API_KEY enables access to OpenAI's language models

Import dependencies

import { Composio } from '@composio/core';
import { LangchainProvider } from '@composio/langchain';
import { MultiServerMCPClient } from "@langchain/mcp-adapters";
import { createAgent } from "langchain";
import * as readline from 'readline';
import 'dotenv/config';

dotenv.config();

What's happening:

We're importing LangChain's MCP adapter and Composio SDK
The dotenv/config import loads environment variables from your .env file
This setup prepares the foundation for connecting LangChain with Metaads functionality through MCP

Initialize Composio client

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

if (!composioApiKey) throw new Error('COMPOSIO_API_KEY is not set');
if (!userId) throw new Error('COMPOSIO_USER_ID is not set');

async function main() {
    const composio = new Composio({
        apiKey: composioApiKey as string,
        provider: new LangchainProvider()
    });

What's happening:

We're loading the COMPOSIO_API_KEY from environment variables and validating it exists
Creating a Composio instance that will manage our connection to Metaads tools
Validating that COMPOSIO_USER_ID is also set before proceeding

Create a Tool Router session

const session = await composio.create(
    userId as string,
    {
        toolkits: ['metaads']
    }
);

const url = session.mcp.url;

What's happening:

We're creating a Tool Router session that gives your agent access to Metaads tools
The create method takes the user ID and specifies which toolkits should be available
The returned session.mcp.url is the MCP server URL that your agent will use
This approach allows the agent to dynamically load and use Metaads tools as needed

Configure the agent with the MCP URL

const client = new MultiServerMCPClient({
    "metaads-agent": {
        transport: "http",
        url: url,
        headers: {
            "x-api-key": process.env.COMPOSIO_API_KEY
        }
    }
});

const tools = await client.getTools();

const agent = createAgent({ model: "gpt-5", tools });

What's happening:

We're creating a MultiServerMCPClient that connects to our Metaads MCP server via HTTP
The client is configured with a name and the URL from our Tool Router session
getTools() retrieves all available Metaads tools that the agent can use
We're creating a LangChain agent using the GPT-5 model

Set up interactive chat interface

let conversationHistory: any[] = [];

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

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

rl.prompt();

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

    if (['exit', 'quit', 'bye'].includes(trimmedInput.toLowerCase())) {
        console.log("\nGoodbye!");
        rl.close();
        process.exit(0);
    }

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

    conversationHistory.push({ role: "user", content: trimmedInput });
    console.log("\nAgent is thinking...\n");

    const response = await agent.invoke({ messages: conversationHistory });
    conversationHistory = response.messages;

    const finalResponse = response.messages[response.messages.length - 1]?.content;
    console.log(`Agent: ${finalResponse}\n`);
        
        rl.prompt();
    });

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

What's happening:

We initialize an empty conversationHistory list to maintain context across interactions
A readline interface is used to continuously accept user input from the command line
When a user types a message, it's added to the conversation history and sent to the agent
The agent processes the request using the invoke() method with the full conversation history
Users can type 'exit', 'quit', or 'bye' to end the chat session gracefully

Run the application

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

What's happening:

We call the main() function to start the application

Complete Code

Here's the complete code to get you started with Metaads and LangChain:

import { Composio } from '@composio/core';
import { LangchainProvider } from '@composio/langchain';
import { MultiServerMCPClient } from "@langchain/mcp-adapters";  
import { createAgent } from "langchain";
import * as readline from 'readline';
import 'dotenv/config';

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

if (!composioApiKey) throw new Error('COMPOSIO_API_KEY is not set');
if (!userId) throw new Error('COMPOSIO_USER_ID is not set');

async function main() {
    const composio = new Composio({
        apiKey: composioApiKey as string,
        provider: new LangchainProvider()
    });

    const session = await composio.create(
        userId as string,
        {
            toolkits: ['metaads']
        }
    );

    const url = session.mcp.url;
    
    const client = new MultiServerMCPClient({
        "metaads-agent": {
            transport: "http",
            url: url,
            headers: {
                "x-api-key": process.env.COMPOSIO_API_KEY
            }
        }
    });
    
    const tools = await client.getTools();
  
    const agent = createAgent({ model: "gpt-5", tools });
    
    let conversationHistory: any[] = [];
    
    console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
    console.log("Ask any Metaads related question or task to the agent.\n");
    
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout,
        prompt: 'You: '
    });

    rl.prompt();

    rl.on('line', async (userInput: string) => {
        const trimmedInput = userInput.trim();
        
        if (['exit', 'quit', 'bye'].includes(trimmedInput.toLowerCase())) {
            console.log("\nGoodbye!");
            rl.close();
            process.exit(0);
        }
        
        if (!trimmedInput) {
            rl.prompt();
            return;
        }
        
        conversationHistory.push({ role: "user", content: trimmedInput });
        console.log("\nAgent is thinking...\n");
        
        const response = await agent.invoke({ messages: conversationHistory });
        conversationHistory = response.messages;
        
        const finalResponse = response.messages[response.messages.length - 1]?.content;
        console.log(`Agent: ${finalResponse}\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

You've successfully built a LangChain agent that can interact with Metaads through Composio's Tool Router.

Key features of this implementation:

Dynamic tool loading through Composio's Tool Router
Conversation history maintenance for context-aware responses
Async Python provides clean, efficient execution of agent workflows

You can extend this further by adding error handling, implementing specific business logic, or integrating additional Composio toolkits to create multi-app workflows.

TOOLS

Supported Tools

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

Copy Ad Object

Copy a Meta Campaign, Ad Set, or Ad while explicitly selecting its resource type and supported copy options.

Create Ad

Create a new ad within an ad set using the Meta Marketing API.

Create Ad Creative

Create a new ad creative using the Meta Marketing API.

Create Ad Set

Create a new ad set within a campaign using the Meta Marketing API.

Create Ad Video

Upload an ad video asset; Meta may keep processing it after returning its ID.

Create Campaign

Create a new advertising campaign using the Meta Marketing API.

Create Custom Audience

Create a new custom audience using the Meta Marketing API.

Create Custom Conversion

Create a persistent custom-conversion definition in a Meta ad account and return its ID.

Create Lead Form

Create a persistent lead-generation form owned by a Facebook Page and return its ID.

Delete Campaign

Delete an advertising campaign using the Meta Marketing API.

Generate Ad Previews

Render previews for a provider-native creative specification in a Meta ad account and return the generated HTML bodies.

Get Ad Accounts

Tool to retrieve all ad account IDs accessible to the authenticated user from Meta Ads.

Get Ad Creative

Get Insights

Get insights data for a Meta Ads object (ad account, campaign, ad set, or ad) using the Meta Marketing API.

Get Meta Object

Tool to retrieve data for any Meta Marketing API object by its ID.

Get Page Accounts

Retrieve pages managed by the authenticated user, including page access tokens when requested.

Get Pixel Event Stats

Read recent Pixel event-count and processing statistics, optionally restricted to server events and one event name, to verify aggregate ingestion.

Get User

Tool to retrieve information about the authenticated user from Meta (Facebook) Graph API.

List Activities

List activity history for a Meta ad account or ad set.

List Ad Account Pixels

List the Pixels and consolidated datasets associated with an ad account so a usable data-source ID can be selected for Conversions API events.

List Ad Creatives

Tool to list all ad creatives under an ad account.

List Ad Images

List one page of image assets in a Meta ad account, optionally restricted to exact image hashes.

List Ad Network Analytics

Tool to retrieve ad network analytics for a Meta Business using the Meta Marketing API.

List Ad Network Analytics Results

Tool to retrieve ad network analytics results for Facebook Audience Network.

List Ads

Tool to list all ads under an ad account using the Meta Marketing API.

List Ad Videos

List one page of video assets in a Meta ad account, optionally filtered by title, dimensions, duration, or aspect ratio.

List Agencies

Tool to retrieve agencies associated with a Meta Business or Ad Account.

List Assigned Pages

Tool to retrieve Facebook Pages assigned to a business user via Meta Marketing API.

List Assigned Users

Tool to list users assigned to a Facebook Page or Ad Account within a specific business context.

List Business Ad Accounts

Tool to retrieve all ad accounts owned by a specific Business Manager.

List Businesses

Tool to discover every Business Manager the authenticated Meta principal can access, via `GET /me/businesses`.

List Business Invoices

Tool to retrieve business invoices from Meta Marketing API.

List Campaigns

List one page of campaigns belonging to a Meta ad account.

List Client Ad Accounts

Tool to list all client ad accounts accessible to a business from Meta Ads.

List Client Apps

Tool to retrieve client apps associated with a Meta Business using the Marketing API.

List Client Instagram Assets

Tool to retrieve Instagram assets that are shared with a business as a client using the Meta Marketing API.

List Client Offsite Signal Container Business Objects

Tool to retrieve client offsite signal container business objects for a business from Meta Marketing API.

List Client Pages

Tool to retrieve client pages associated with a Meta business.

List Clients

Tool to retrieve client businesses associated with a Meta Business Manager.

List Collaborative Ads Collaboration Requests

Tool to retrieve collaborative ads collaboration requests for a Meta Business using the Marketing API.

List Collaborative Ads Suggested Partners

Tool to retrieve collaborative ads suggested partners for a business from Meta Marketing API.

List Comments

Return one page from the comments edge of a Page-owned post, photo, video, comment, or reply.

List Custom Audiences

List one page of custom audiences in a Meta ad account, with field projection and optional business, primary-audience, or Pixel constraints.

List Custom Conversions

List one page of custom-conversion definitions in a Meta ad account, with field projection and opaque cursor pagination.

List Initiated Audience Sharing Requests

Tool to retrieve initiated audience sharing requests for a business using the Meta Marketing API.

List Leads

List one page of leads belonging to a Meta Ad or Leadgen Form.

List Managed Partner Ads Funding Source Details

Tool to retrieve managed partner ads funding source details for a Meta Business.

List Owned Apps

Tool to retrieve apps owned by a business from Meta Marketing API.

List Owned Businesses

Tool to retrieve businesses owned by a parent Business Manager from Meta Marketing API.

List Owned Instagram Assets

Tool to list Instagram accounts/assets owned by a Meta Business.

List Owned Offsite Signal Container Business Objects

Tool to retrieve owned offsite signal container business objects for a business from Meta Marketing API.

List Owned Pages

Tool to retrieve Pages owned by a Business Manager from Meta Marketing API.

List Pending Client Ad Accounts

Tool to retrieve pending client ad account access requests for a Business Manager from Meta Ads.

List Pending Client Apps

Tool to retrieve pending client apps for a Meta Business.

List Pending Client Pages

Tool to retrieve pending client pages for a Business Manager using the Meta Marketing API.

List Pending Shared Offsite Signal Container Business Objects

Tool to retrieve pending shared offsite signal container business objects from Meta Marketing API.

List Pending Owned Ad Accounts

Tool to retrieve pending owned ad accounts for a Business Manager account from Meta Marketing API.

List Pending Owned Pages

Tool to retrieve Pages with pending ownership status for a Business Manager from Meta Marketing API.

List Pending Users

Tool to retrieve pending users from a Business Manager in Meta Marketing API.

List Received Audience Sharing Requests

Tool to retrieve all received audience sharing requests for a business using the Meta Marketing API.

List Subscribed Apps

List one page of applications subscribed to a Meta ad account.

List System Users

Tool to retrieve system users for a Meta Business Manager account.

List Targeting Search

Tool to search for targeting options in Meta Ads Marketing API.

List Video Tags

Return one page of TaggableSubject entries from a Video's `/tags` edge.

List Video Thumbnails

List one page of available thumbnail variants for a Meta video.

Read Ad Sets

Retrieve ad sets from a Meta ad account using the Marketing API.

Send Conversion Events

Irreversibly submit 1-1,000 validated server conversion events to a Meta Pixel or dataset.

Update Ad Creative

Update Campaign

Update an existing advertising campaign using the Meta Marketing API.

Upload Ad Image

Upload an image for use in Meta ad creatives using the Marketing API.

FRAMEWORKS

How to build Metaads MCP Agent with another framework

Claude Code

Use Metaads MCP with Claude Code

Cursor

Use Metaads MCP with Cursor

ChatGPT

Use Metaads MCP with ChatGPT

Claude Cowork

Use Metaads MCP with Claude Cowork

Antigravity

Use Metaads MCP with Antigravity

OpenAI Agents SDK

Use Metaads MCP with OpenAI Agents SDK

Claude Agent SDK

Use Metaads MCP with Claude Agent SDK

Grok Bot

Use Metaads MCP with Grok Bot

Muse

Use Metaads MCP with Muse

Codex

Use Metaads MCP with Codex

Kimi Code

Use Metaads MCP with Kimi Code

Grok Build

Use Metaads MCP with Grok Build

VS Code

Use Metaads MCP with VS Code

OpenCode

Use Metaads MCP with OpenCode

OpenClaw

Use Metaads MCP with OpenClaw

Hermes

Use Metaads MCP with Hermes

Atomic Agent

Use Metaads MCP with Atomic Agent

CLI

Use Metaads MCP with CLI

Google ADK

Use Metaads MCP with Google ADK

Vercel AI SDK

Use Metaads MCP with Vercel AI SDK

Mastra AI

Use Metaads MCP with Mastra AI

LlamaIndex

Use Metaads MCP with LlamaIndex

CrewAI

Use Metaads MCP with CrewAI

Pydantic AI

Use Metaads MCP with Pydantic AI

AutoGen

Use Metaads MCP with AutoGen

MORE TOOLKITS

Explore Other Toolkits

Toolkit marketplace

Adrapid

Api Key

Adrapid is a platform for rapid creation of digital marketing visuals using templates. It streamlines design workflows for banners, images, and HTML5 content with automation.

AdRoll

Oauth2

AdRoll is a digital marketing platform for managing advertising campaigns, audiences, and account-based marketing. It helps marketers retarget customers across channels and measure performance.

Adtraction

Api Key

Adtraction is an affiliate marketing platform for partner programs, tracking links, transactions, commissions, statistics, and payments. It helps advertisers and publishers manage performance marketing with clear reporting and payout workflows.

Adyntel

Api Key

Adyntel is an API that retrieves LinkedIn ads for any company using a domain or LinkedIn Page ID. Easily access competitive ad intelligence to power your marketing workflows.

FAQ

Frequently asked questions

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

Yes, you can. LangChain 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 Metaads tools.

Yes, absolutely. You can configure which Metaads 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 Metaads data and credentials are handled as safely as possible.

Start with Metaads.It takes 30 seconds.

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

Start building

How to integrate Metaads MCP with LangChain

Connect Metaads without auth hassles

Introduction

Also integrate Metaads with

TL;DR

What is LangChain?

What is the Metaads 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

Initialize Composio client

Create a Tool Router session

Configure the agent with the MCP URL

Set up interactive chat interface

Run the application

Complete Code

Conclusion

Supported Tools

How to build Metaads MCP Agent with another framework

Claude Code

Cursor

ChatGPT

Claude Cowork

Antigravity

OpenAI Agents SDK

Claude Agent SDK

Grok Bot

Muse

Codex

Kimi Code

Grok Build

VS Code

OpenCode

OpenClaw

Hermes

Atomic Agent

CLI

Google ADK

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Pydantic AI

AutoGen

Explore Other Toolkits

Adrapid

AdRoll

Adtraction

Adyntel

Frequently asked questions

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

Can I use Tool Router MCP with LangChain?+

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

How safe is my data with Composio Tool Router?+

Start with Metaads.It takes 30 seconds.