# How to integrate Sidetracker MCP with LangChain

```json
{
  "title": "How to integrate Sidetracker MCP with LangChain",
  "toolkit": "Sidetracker",
  "toolkit_slug": "sidetracker",
  "framework": "LangChain",
  "framework_slug": "langchain",
  "url": "https://composio.dev/toolkits/sidetracker/framework/langchain",
  "markdown_url": "https://composio.dev/toolkits/sidetracker/framework/langchain.md",
  "updated_at": "2026-05-06T08:28:31.515Z"
}
```

## Introduction

This guide walks you through connecting Sidetracker to LangChain using the Composio tool router. By the end, you'll have a working Sidetracker agent that can show all marketing campaign lists this quarter, get detailed info for list id 12345, analyze recent funnel performance by list through natural language commands.
This guide will help you understand how to give your LangChain agent real control over a Sidetracker account through Composio's Sidetracker MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Sidetracker with

- [OpenAI Agents SDK](https://composio.dev/toolkits/sidetracker/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/sidetracker/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/sidetracker/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/sidetracker/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/sidetracker/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/sidetracker/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/sidetracker/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/sidetracker/framework/cli)
- [Google ADK](https://composio.dev/toolkits/sidetracker/framework/google-adk)
- [Vercel AI SDK](https://composio.dev/toolkits/sidetracker/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/sidetracker/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/sidetracker/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/sidetracker/framework/crew-ai)

## TL;DR

Here's what you'll learn:
- Get and set up your OpenAI and Composio API keys
- Connect your Sidetracker project to Composio
- Create a Tool Router MCP session for Sidetracker
- Initialize an MCP client and retrieve Sidetracker tools
- Build a LangChain agent that can interact with Sidetracker
- 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 Sidetracker MCP server, and what's possible with it?

The Sidetracker MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Sidetracker account. It provides structured and secure access to your marketing analytics, so your agent can retrieve detailed list analytics, explore customer journey data, and monitor campaign performance with ease.
- List retrieval and exploration: Instantly fetch all available lists from your Sidetracker account to get a complete view of your marketing segments or campaigns.
- Detailed list insights: Retrieve granular details about any specific list, enabling your agent to analyze list performance and attributes on demand.
- Sales funnel analysis: Access list-based data to help break down and optimize each stage of your sales funnel.
- Customer journey tracking: Let your agent pull list details to better understand customer touchpoints and pathways across your marketing efforts.
- Marketing spend monitoring: Use list data as a foundation to evaluate and optimize your marketing expenses based on real-time analytics.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `SIDETRACKER_GET_LIST_DETAILS` | Get List Details | Tool to retrieve details of a specific list by its id. use after confirming the list id is correct. |
| `SIDETRACKER_GET_LISTS` | Get Lists | Tool to retrieve lists from sidetracker. use when you need to paginate through available lists. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Sidetracker MCP server is an implementation of the Model Context Protocol that connects your AI agent to Sidetracker. It provides structured and secure access so your agent can perform Sidetracker operations on your behalf through a secure, permission-based interface.
With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster.

## Step-by-step Guide

### 1. Prerequisites

No description provided.

### 1. Getting API Keys for OpenAI and Composio

OpenAI API Key
- Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) 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](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs).
- Navigate to your API settings and generate a new API key.
- Store this key securely as you'll need it for authentication.

### 2. Install dependencies

No description provided.
```python
pip install composio-langchain langchain-mcp-adapters langchain python-dotenv
```

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

### 3. Set up environment variables

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
```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
```

### 4. Import dependencies

No description provided.
```python
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent
from dotenv import load_dotenv
from composio import Composio
import asyncio
import os

load_dotenv()
```

```typescript
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();
```

### 5. Initialize Composio client

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 Sidetracker tools
- Validating that COMPOSIO_USER_ID is also set before proceeding
```python
async def main():
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))

    if not os.getenv("COMPOSIO_API_KEY"):
        raise ValueError("COMPOSIO_API_KEY is not set")
    if not os.getenv("COMPOSIO_USER_ID"):
        raise ValueError("COMPOSIO_USER_ID is not set")
```

```typescript
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()
    });
```

### 6. Create a Tool Router session

What's happening:
- We're creating a Tool Router session that gives your agent access to Sidetracker 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 Sidetracker tools as needed
```python
# Create Tool Router session for Sidetracker
session = composio.create(
    user_id=os.getenv("COMPOSIO_USER_ID"),
    toolkits=['sidetracker']
)

url = session.mcp.url
```

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

const url = session.mcp.url;
```

### 7. Configure the agent with the MCP URL

No description provided.
```python
client = MultiServerMCPClient({
    "sidetracker-agent": {
        "transport": "streamable_http",
        "url": session.mcp.url,
        "headers": {
            "x-api-key": os.getenv("COMPOSIO_API_KEY")
        }
    }
})

tools = await client.get_tools()

agent = create_agent("gpt-5", tools)
```

```typescript
const client = new MultiServerMCPClient({
    "sidetracker-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 });
```

### 8. Set up interactive chat interface

No description provided.
```python
conversation_history = []

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

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

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

    if not user_input:
        continue

    conversation_history.append({"role": "user", "content": user_input})
    print("\nAgent is thinking...\n")

    response = await agent.ainvoke({"messages": conversation_history})
    conversation_history = response['messages']
    final_response = response['messages'][-1].content
    print(f"Agent: {final_response}\n")
```

```typescript
let conversationHistory: any[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
console.log("Ask any Sidetracker 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);
    });
```

### 9. Run the application

No description provided.
```python
if __name__ == "__main__":
    asyncio.run(main())
```

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

## Complete Code

```python
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent
from dotenv import load_dotenv
from composio import Composio
import asyncio
import os

load_dotenv()

async def main():
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    
    if not os.getenv("COMPOSIO_API_KEY"):
        raise ValueError("COMPOSIO_API_KEY is not set")
    if not os.getenv("COMPOSIO_USER_ID"):
        raise ValueError("COMPOSIO_USER_ID is not set")
    
    session = composio.create(
        user_id=os.getenv("COMPOSIO_USER_ID"),
        toolkits=['sidetracker']
    )

    url = session.mcp.url
    
    client = MultiServerMCPClient({
        "sidetracker-agent": {
            "transport": "streamable_http",
            "url": url,
            "headers": {
                "x-api-key": os.getenv("COMPOSIO_API_KEY")
            }
        }
    })
    
    tools = await client.get_tools()
  
    agent = create_agent("gpt-5", tools)
    
    conversation_history = []
    
    print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
    print("Ask any Sidetracker related question or task to the agent.\n")
    
    while True:
        user_input = input("You: ").strip()
        
        if user_input.lower() in ['exit', 'quit', 'bye']:
            print("\nGoodbye!")
            break
        
        if not user_input:
            continue
        
        conversation_history.append({"role": "user", "content": user_input})
        print("\nAgent is thinking...\n")
        
        response = await agent.ainvoke({"messages": conversation_history})
        conversation_history = response['messages']
        final_response = response['messages'][-1].content
        print(f"Agent: {final_response}\n")

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

```typescript
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: ['sidetracker']
        }
    );

    const url = session.mcp.url;
    
    const client = new MultiServerMCPClient({
        "sidetracker-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 Sidetracker 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 Sidetracker 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.

## How to build Sidetracker MCP Agent with another framework

- [OpenAI Agents SDK](https://composio.dev/toolkits/sidetracker/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/sidetracker/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/sidetracker/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/sidetracker/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/sidetracker/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/sidetracker/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/sidetracker/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/sidetracker/framework/cli)
- [Google ADK](https://composio.dev/toolkits/sidetracker/framework/google-adk)
- [Vercel AI SDK](https://composio.dev/toolkits/sidetracker/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/sidetracker/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/sidetracker/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/sidetracker/framework/crew-ai)

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- [Stannp](https://composio.dev/toolkits/stannp) - Stannp is an API-driven direct mail platform for sending postcards and letters programmatically. It lets you automate physical mail delivery—no manual printing or mailing required.
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- [Tpscheck](https://composio.dev/toolkits/tpscheck) - Tpscheck is a real-time service for verifying UK phone numbers against TPS and CTPS registers. It helps prevent unwanted marketing calls and ensures compliance with UK telemarketing laws.
- [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable.
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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Sidetracker MCP?

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

### Can I use Tool Router MCP with LangChain?

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 Sidetracker tools.

### Can I manage the permissions and scopes for Sidetracker while using Tool Router?

Yes, absolutely. You can configure which Sidetracker 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.

### How safe is my data with Composio Tool Router?

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 Sidetracker data and credentials are handled as safely as possible.

---
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