How to integrate Simla com MCP with Mastra AI

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Introduction

This guide walks you through connecting Simla com to Mastra AI 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 Mastra AI 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:
  • Set up your environment so Mastra, OpenAI, and Composio work together
  • Create a Tool Router session in Composio that exposes Simla com tools
  • Connect Mastra's MCP client to the Composio generated MCP URL
  • Fetch Simla com tool definitions and attach them as a toolset
  • Build a Mastra agent that can reason, call tools, and return structured results
  • Run an interactive CLI where you can chat with your Simla com agent

What is Mastra AI?

Mastra AI is a TypeScript framework for building AI agents with tool support. It provides a clean API for creating agents that can use external services through MCP.

Key features include:

  • MCP Client: Built-in support for Model Context Protocol servers
  • Toolsets: Organize tools into logical groups
  • Step Callbacks: Monitor and debug agent execution
  • OpenAI Integration: Works with OpenAI models via @ai-sdk/openai

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, make sure you have:
  • Node.js 18 or higher
  • A Composio account with an active API key
  • An OpenAI API key
  • Basic familiarity with TypeScript

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key.
  • You need credits or a connected billing setup to use the models.
  • Store the key somewhere safe.
Composio API Key
  • Log in to the Composio dashboard.
  • Go to Settings and copy your API key.
  • This key lets your Mastra agent talk to Composio and reach Simla com through MCP.

Install dependencies

bash
npm install @composio/core @mastra/core @mastra/mcp @ai-sdk/openai dotenv

Install the required packages.

What's happening:

  • @composio/core is the Composio SDK for creating MCP sessions
  • @mastra/core provides the Agent class
  • @mastra/mcp is Mastra's MCP client
  • @ai-sdk/openai is the model wrapper for OpenAI
  • dotenv loads environment variables from .env

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_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
  • COMPOSIO_USER_ID tells Composio which user this session belongs to
  • OPENAI_API_KEY lets the Mastra agent call OpenAI models

Import libraries and validate environment

typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Agent } from "@mastra/core/agent";
import { MCPClient } from "@mastra/mcp";
import { Composio } from "@composio/core";
import * as readline from "readline";

import type { AiMessageType } from "@mastra/core/agent";

const openaiAPIKey = process.env.OPENAI_API_KEY;
const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({
  apiKey: composioAPIKey as string,
});
What's happening:
  • dotenv/config auto loads your .env so process.env.* is available
  • openai gives you a Mastra compatible model wrapper
  • Agent is the Mastra agent that will call tools and produce answers
  • MCPClient connects Mastra to your Composio MCP server
  • Composio is used to create a Tool Router session

Create a Tool Router session for Simla com

typescript
async function main() {
  const session = await composio.create(
    composioUserID as string,
    {
      toolkits: ["simla_com"],
    },
  );

  const composioMCPUrl = session.mcp.url;
  console.log("Simla com MCP URL:", composioMCPUrl);
What's happening:
  • create spins up a short-lived MCP HTTP endpoint for this user
  • The toolkits array contains "simla_com" for Simla com access
  • session.mcp.url is the MCP URL that Mastra's MCPClient will connect to

Configure Mastra MCP client and fetch tools

typescript
const mcpClient = new MCPClient({
    id: composioUserID as string,
    servers: {
      nasdaq: {
        url: new URL(composioMCPUrl),
        requestInit: {
          headers: session.mcp.headers,
        },
      },
    },
    timeout: 30_000,
  });

console.log("Fetching MCP tools from Composio...");
const composioTools = await mcpClient.getTools();
console.log("Number of tools:", Object.keys(composioTools).length);
What's happening:
  • MCPClient takes an id for this client and a list of MCP servers
  • The headers property includes the x-api-key for authentication
  • getTools fetches the tool definitions exposed by the Simla com toolkit

Create the Mastra agent

typescript
const agent = new Agent({
    name: "simla_com-mastra-agent",
    instructions: "You are an AI agent with Simla com tools via Composio.",
    model: "openai/gpt-5",
  });
What's happening:
  • Agent is the core Mastra agent
  • name is just an identifier for logging and debugging
  • instructions guide the agent to use tools instead of only answering in natural language
  • model uses openai("gpt-5") to configure the underlying LLM

Set up interactive chat interface

typescript
let messages: AiMessageType[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end.\n");

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

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;
  }

  messages.push({
    id: crypto.randomUUID(),
    role: "user",
    content: trimmedInput,
  });

  console.log("\nAgent is thinking...\n");

  try {
    const response = await agent.generate(messages, {
      toolsets: {
        simla_com: composioTools,
      },
      maxSteps: 8,
    });

    const { text } = response;

    if (text && text.trim().length > 0) {
      console.log(`Agent: ${text}\n`);
        messages.push({
          id: crypto.randomUUID(),
          role: "assistant",
          content: text,
        });
      }
    } catch (error) {
      console.error("\nError:", error);
    }

    rl.prompt();
  });

  rl.on("close", async () => {
    console.log("\nSession ended.");
    await mcpClient.disconnect();
    process.exit(0);
  });
}

main().catch((err) => {
  console.error("Fatal error:", err);
  process.exit(1);
});
What's happening:
  • messages keeps the full conversation history in Mastra's expected format
  • agent.generate runs the agent with conversation history and Simla com toolsets
  • maxSteps limits how many tool calls the agent can take in a single run
  • onStepFinish is a hook that prints intermediate steps for debugging

Complete Code

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

typescript
import "dotenv/config";
import { openai } from "@ai-sdk/openai";
import { Agent } from "@mastra/core/agent";
import { MCPClient } from "@mastra/mcp";
import { Composio } from "@composio/core";
import * as readline from "readline";

import type { AiMessageType } from "@mastra/core/agent";

const openaiAPIKey = process.env.OPENAI_API_KEY;
const composioAPIKey = process.env.COMPOSIO_API_KEY;
const composioUserID = process.env.COMPOSIO_USER_ID;

if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set");
if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set");
if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set");

const composio = new Composio({ apiKey: composioAPIKey as string });

async function main() {
  const session = await composio.create(composioUserID as string, {
    toolkits: ["simla_com"],
  });

  const composioMCPUrl = session.mcp.url;

  const mcpClient = new MCPClient({
    id: composioUserID as string,
    servers: {
      simla_com: {
        url: new URL(composioMCPUrl),
        requestInit: {
          headers: session.mcp.headers,
        },
      },
    },
    timeout: 30_000,
  });

  const composioTools = await mcpClient.getTools();

  const agent = new Agent({
    name: "simla_com-mastra-agent",
    instructions: "You are an AI agent with Simla com tools via Composio.",
    model: "openai/gpt-5",
  });

  let messages: AiMessageType[] = [];

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

  rl.prompt();

  rl.on("line", async (input: string) => {
    const trimmed = input.trim();
    if (["exit", "quit"].includes(trimmed.toLowerCase())) {
      rl.close();
      return;
    }

    messages.push({ id: crypto.randomUUID(), role: "user", content: trimmed });

    const { text } = await agent.generate(messages, {
      toolsets: { simla_com: composioTools },
      maxSteps: 8,
    });

    if (text) {
      console.log(`Agent: ${text}\n`);
      messages.push({ id: crypto.randomUUID(), role: "assistant", content: text });
    }

    rl.prompt();
  });

  rl.on("close", async () => {
    await mcpClient.disconnect();
    process.exit(0);
  });
}

main();

Conclusion

You've built a Mastra AI agent that can interact with Simla com through Composio's Tool Router. You can extend this further by:
  • Adding other toolkits like Gmail, Slack, or GitHub
  • Building a web-based chat interface around this agent
  • Using multiple MCP endpoints to enable cross-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 Mastra AI?

Yes, you can. Mastra AI 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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