How to integrate Simla com MCP with LangChain

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Introduction

This guide walks you through connecting Simla com to LangChain using the Composio tool router. By the end, you'll have a working Simla com agent that can create a new customer with email and phone, update order status for a specific order, list customers who registered this week through natural language commands.

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

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

Also integrate Simla com with

TL;DR

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

The Simla com MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Simla com account. It provides structured and secure access to customer records, order management, delivery integration, and custom field data, so your agent can perform actions like creating orders, managing customers, updating tasks, and extending your CRM—all on your behalf.

  • Customer management and updates: Easily create new customers, update their details, or fetch specific customer profiles using flexible filters and identifiers.
  • Order creation and editing: Let your agent register new orders, update existing ones, or retrieve order information to streamline your sales and fulfillment workflows.
  • Custom field management: Enable your agent to create or update custom metadata fields for orders, customers, or companies, so your CRM data model can adapt to your business needs.
  • Task automation and tracking: Automatically create new tasks, assign them to team members, and keep all task details up to date for efficient collaboration and follow-up.
  • Bulk customer retrieval and segmentation: Fetch lists of customers with custom filters to support segmentation, analysis, or targeted outreach directly from your agent.

Supported Tools & Triggers

Tools
Add Customer Interaction FavoriteTool to add a product offer to a customer's list of favorites.
Combine CustomersTool to combine multiple customers into one.
Combine Corporate CustomersTool to combine multiple corporate customers into one.
Combine OrdersTool to combine two orders into one.
Create CostCreate a new cost record in Simla CRM.
Create CustomerCreates a new customer in Simla.
Create Corporate CustomerCreates a new corporate customer in Simla.
Create Customer Interaction Cart SetTool to create or overwrite shopping cart data for a customer.
Create Corporate Customer AddressCreates a new address for a corporate customer in Simla.
Create Corporate Customer CompanyTool to create a company for a corporate customer in Simla.
Create Corporate Customer ContactTool to create a link between a corporate customer and a contact person.
Create Corporate Customer NoteTool to create a note for a corporate customer.
Create Customer NoteTool to create a note for a customer.
Create Custom FieldTool to create a custom field for a specified entity in Simla.
Create Custom Fields DictionaryTool to create a custom fields dictionary with elements.
Calculate Loyalty DiscountTool to calculate maximum loyalty discount and bonuses for an order.
Create OrderCreate a new order in Simla with customer details and line items.
Create Orders LinkTool to create a link between multiple orders in Simla.
Create Order PackTool to create a new order pack in Simla.
Create Order PaymentCreate a new payment record for an order in Simla CRM.
Create Reference CourierTool to create a new courier in Simla.
Create Reference CurrencyTool to create a new currency in Simla.
Create Store Inventories UploadTool to batch update inventory quantities and purchase prices across warehouses/stores.
Create Store Product GroupsTool to create a new product group in Simla.
Batch Create Store ProductsTool to batch create products and services in the store catalog.
Create TaskTool to create a new task.
Create Web Analytics Visits UploadTool to batch upload web analytics visit records to Simla CRM.
Delete CostTool to delete a cost by ID.
Delete Corporate Customer NoteTool to delete a corporate customer note by ID.
Delete Customer NoteTool to delete a customer note by ID.
Delete Order PaymentTool to delete an order payment by ID.
Edit CostTool to edit an existing cost record by ID.
Edit CustomerTool to edit an existing customer.
Edit Corporate CustomerTool to edit an existing corporate customer.
Edit Corporate Customer AddressTool to edit an address for a corporate customer.
Edit Corporate Customer CompanyTool to edit a company associated with a corporate customer.
Edit Corporate Customer ContactTool to edit the link between a corporate customer and a contact person.
Edit Custom FieldEdit an existing custom field's properties by entity type and field code.
Edit Custom Fields DictionaryTool to edit an existing custom fields directory by code.
Edit Delivery Generic SettingTool to register or edit a delivery service integration configuration.
Edit FileTool to edit an existing file by ID.
Edit Integration ModuleTool to create or edit an integration module configuration.
Edit OrderTool to edit an existing order by external ID.
Edit Orders PaymentTool to edit an existing order payment.
Edit Reference Cost GroupTool to edit an existing cost group by code.
Edit Reference Cost ItemTool to edit an existing cost item reference by code.
Edit Reference CourierTool to edit an existing courier by ID.
Edit Reference CurrencyTool to edit an existing currency configuration by ID.
Edit Reference Delivery ServiceTool to edit an existing delivery service by code.
Edit Reference Delivery TypeTool to create or edit a delivery type in Simla.
Edit Reference Order MethodTool to edit an existing order method reference by code.
Edit Reference Order TypeTool to create or edit an order type by code.
Edit Reference Payment StatusTool to edit an existing payment status reference by code.
Edit Reference Payment TypeTool to edit an existing payment type or create a new one by code.
Edit Reference Price TypeTool to edit an existing price type in the reference data.
Edit Product StatusTool to create or edit product status in the reference directory.
Edit Reference StatusesTool to edit an existing order status reference by code.
Edit Reference StoresTool to create or edit a warehouse/store by code.
Edit Reference SubscriptionTool to create or edit a subscription category in Simla.
Edit Reference UnitTool to create or edit a unit of measurement reference by code.
Edit Store Product GroupTool to edit an existing product group by external ID.
Edit Store Products BatchTool to batch edit multiple products and services at once.
Edit Store SettingTool to register or update warehouse system configuration in Simla.
Edit TaskTool to edit an existing task.
Edit Telephony SettingTool to create or edit a telephony integration setting in Simla.
Fix Corporate Customers External IDsTool to perform mass recording of corporate customer external IDs in Simla.
Fix Customers External IDsTool to perform mass recording of customer external IDs in Simla.
Fix Orders External IDsTool to perform mass recording of order external IDs in Simla.
Get API CredentialsTool to retrieve available API methods and stores for the current API key.
Get API VersionsTool to retrieve a list of available API versions.
Get CostRetrieves detailed information about a specific cost record by its ID.
Get CustomerRetrieves detailed information about a specific customer by ID or external ID.
Get Corporate CustomerRetrieves detailed information about a corporate customer by external ID.
Get Customer Interaction FavoritesTool to retrieve a list of favorite product offers for a specific customer.
Get CustomersTool to retrieve a list of customers.
Get Corporate CustomersTool to retrieve a list of corporate customers matching the specified filters.
Get Corporate Customer CompaniesTool to retrieve the list of companies associated with a corporate customer contact person.
Get Corporate Customers HistoryTool to retrieve corporate customer change history for synchronization or audit purposes.
Get Corporate Customers NotesTool to retrieve a list of corporate customer notes.
Get Customers HistoryTool to retrieve customer change history for synchronization or audit purposes.
Get Customers NotesTool to retrieve a list of customer notes.
Get Custom FieldTool to retrieve detailed information about a specific custom field by entity and code.
Get Custom FieldsTool to list custom fields.
Get Custom Fields DictionariesTool to retrieve the list of custom dictionaries.
Get Custom Fields DictionaryTool to retrieve a custom fields dictionary by its code identifier.
Get Delivery Generic SettingTool to retrieve integration configuration for a delivery module instance.
Get Delivery ShipmentsTool to retrieve a list of delivery shipments.
Get FilesTool to retrieve a list of files.
Get Loyalty AccountsTool to retrieve a list of customer loyalty program accounts.
Get Loyalty Bonus OperationsTool to retrieve the history of bonus account operations for all participations.
Get Loyalty LoyaltiesTool to retrieve a list of loyalty programs.
Get OrderTool to retrieve detailed information about a specific order.
Get OrdersTool to retrieve a list of orders.
Get Orders HistoryTool to retrieve order change history.
Get Orders Packs HistoryTool to retrieve the history of order packing changes.
Get ProductsTool to retrieve a list of products.
Get Reference Cost GroupsTool to retrieve a list of all cost groups configured in the system.
Get Reference Cost ItemsTool to retrieve a list of all cost items configured in the system.
Get Reference CountriesTool to retrieve a list of all available country ISO codes in the system.
Get Reference CouriersTool to retrieve the list of available couriers.
Get Reference CurrenciesTool to retrieve the list of all configured currencies in the system.
Get Reference Delivery ServicesTool to retrieve a list of all configured delivery services in the system.
Get Reference Delivery TypesTool to retrieve the list of delivery types from the system.
Get Reference Legal EntitiesTool to retrieve a list of all configured legal entities in the system.
Get MessageGateway ChannelsTool to retrieve a list of all MessageGateway channels in the system.
Get Reference Order MethodsTool to retrieve a list of all available order methods in the system.
Get Reference Order TypesTool to retrieve the list of order types from the system.
Get Reference Payment StatusesTool to retrieve the list of payment statuses configured in the system.
Get Reference Payment TypesTool to retrieve a list of all configured payment types in the system.
Get Reference Price TypesTool to retrieve the list of price types from the reference data.
Get Product StatusesTool to retrieve the list of all product statuses configured in the system.
Get Reference StatusesTool to retrieve the list of order statuses from the system.
Get Reference Status GroupsTool to retrieve the list of all order status groups in the system.
Get Reference SubscriptionsTool to retrieve the list of all subscription categories in the system.
Get Reference UnitsTool to retrieve the list of units of measurement from the system.
Get SegmentsTool to retrieve a list of customer segments.
Get SettingsTool to retrieve system settings including default currency, language, timezone, and message gateway configuration.
Get SitesTool to retrieve a list of all configured sites/stores in the system.
Get Statistic UpdateTool to trigger an update of CRM basic statistics.
Get Store InventoriesTool to retrieve store inventories with leftover stocks and purchasing prices.
Get Store OffersTool to retrieve a list of store offers with pagination support.
Get Store Products PropertiesTool to retrieve a list of product properties from the store.
Get Store Products Properties ValuesTool to retrieve product property values from the store.
Get StoresTool to retrieve a list of all warehouses/stores in the system.
Get TaskRetrieves detailed information about a specific task by its ID.
Get TasksTool to retrieve a list of tasks with optional filters.
Get Tasks CommentsTool to retrieve comments on a specific task by task ID.
Get Tasks HistoryTool to retrieve task change history.
Get Telephony SettingTool to retrieve telephony integration settings by code.
Get UserTool to retrieve detailed information about a specific user by ID.
Get User GroupsTool to retrieve a list of user groups with their permissions and configuration.
Get UsersTool to retrieve a list of users.
Update Customer SubscriptionsTool to subscribe or unsubscribe a customer to mailing channels.
Update User StatusTool to change a user's status.
Upload CostsTool to batch upload cost records to Simla CRM.
Upload CustomersTool to batch upload customer records to Simla CRM.
Upload Corporate CustomersTool to batch upload corporate customers to Simla.
Upload OrdersUpload multiple orders to Simla in a single batch operation.
Upload Store PricesTool to batch update SKU prices in Simla store catalog.
Upload Web Analytics Client IDsTool to batch upload web analytics client IDs to Simla CRM for tracking purposes.
Upload Web Analytics SourcesTool to batch upload web analytics sources to Simla CRM.

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

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

pip install composio-langchain langchain-mcp-adapters langchain python-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 is the core agent framework
  • python-dotenv 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

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()
What's happening:
  • We're importing LangChain's MCP adapter and Composio SDK
  • The dotenv import loads environment variables from your .env file
  • This setup prepares the foundation for connecting LangChain with Simla com functionality through MCP

Initialize Composio client

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")
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 Simla com tools
  • Validating that COMPOSIO_USER_ID is also set before proceeding

Create a Tool Router session

# Create Tool Router session for Simla com
session = composio.create(
    user_id=os.getenv("COMPOSIO_USER_ID"),
    toolkits=['simla_com']
)

url = session.mcp.url
What's happening:
  • We're creating a Tool Router session that gives your agent access to Simla com 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 Simla com tools as needed

Configure the agent with the MCP URL

client = MultiServerMCPClient({
    "simla_com-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)
What's happening:
  • We're creating a MultiServerMCPClient that connects to our Simla com MCP server via HTTP
  • The client is configured with a name and the URL from our Tool Router session
  • get_tools() retrieves all available Simla com tools that the agent can use
  • We're creating a LangChain agent using the GPT-5 model

Set up interactive chat interface

conversation_history = []

print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
print("Ask any Simla com 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")
What's happening:
  • We initialize an empty conversation_history list to maintain context across interactions
  • A while loop continuously accepts 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 ainvoke() method with the full conversation history
  • Users can type 'exit', 'quit', or 'bye' to end the chat session gracefully

Run the application

if __name__ == "__main__":
    asyncio.run(main())
What's happening:
  • We call the main() function using asyncio.run() to start the application

Complete Code

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

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=['simla_com']
    )

    url = session.mcp.url
    
    client = MultiServerMCPClient({
        "simla_com-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 Simla com 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())

Conclusion

You've successfully built a LangChain agent that can interact with Simla com 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 Simla com MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Simla com MCP?

With a standalone Simla com MCP server, the agents and LLMs can only access a fixed set of Simla com tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Simla com 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 Simla com tools.

Can I manage the permissions and scopes for Simla com while using Tool Router?

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

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