# How to integrate Folk MCP with Mastra AI ```json { "title": "How to integrate Folk MCP with Mastra AI", "toolkit": "Folk", "toolkit_slug": "folk", "framework": "Mastra AI", "framework_slug": "mastra-ai", "url": "https://composio.dev/toolkits/folk/framework/mastra-ai", "markdown_url": "https://composio.dev/toolkits/folk/framework/mastra-ai.md", "updated_at": "2026-05-12T10:12:00.414Z" } ``` ## Introduction This guide walks you through connecting Folk to Mastra AI using the Composio tool router. By the end, you'll have a working Folk agent that can list all companies added this week, add a new company called acme corp, get details for person with email john@acme.com through natural language commands. This guide will help you understand how to give your Mastra AI agent real control over a Folk account through Composio's Folk MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved. ## Also integrate Folk with - [OpenAI Agents SDK](https://composio.dev/toolkits/folk/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/folk/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/folk/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/folk/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/folk/framework/codex) - [OpenClaw](https://composio.dev/toolkits/folk/framework/openclaw) - [Hermes](https://composio.dev/toolkits/folk/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/folk/framework/cli) - [Google ADK](https://composio.dev/toolkits/folk/framework/google-adk) - [LangChain](https://composio.dev/toolkits/folk/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/folk/framework/ai-sdk) - [LlamaIndex](https://composio.dev/toolkits/folk/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/folk/framework/crew-ai) ## 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 Folk tools - Connect Mastra's MCP client to the Composio generated MCP URL - Fetch Folk 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 Folk 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 Folk MCP server, and what's possible with it? The Folk MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Folk account. It provides structured and secure access to your CRM workspace, so your agent can perform actions like managing contacts, organizing companies, retrieving group info, and handling custom fields on your behalf. - Contact management and retrieval: Let your agent list, fetch, or delete people in your workspace, ensuring your contact database stays relevant and up to date. - Company and organization operations: Effortlessly create new companies, retrieve details, or remove outdated organizations from your workspace via your agent. - Workspace group insights: Ask your agent to list workspace groups and explore available group custom fields for efficient segmentation and tracking. - User profile and context access: Allow your agent to pull current workspace user details, making personalized automations and actions possible. - Custom field exploration: Enable your agent to list and understand custom fields for groups and entity types, powering more tailored CRM workflows. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `FOLK_CREATE_COMPANY` | Create Company | Creates a new company in the Folk workspace with the specified details. Required: company name (unique identifier). Optional: description, industry, funding details, employee range, contact info (emails, phones, urls, addresses), group assignments, and custom field values. Returns the created company with a unique ID, all provided fields, timestamps, and creator information. | | `FOLK_CREATE_NOTE` | Create Note | Tool to create a new note in the Folk workspace. Use when you need to add a note to a person, company, or deal entity. | | `FOLK_CREATE_PERSON` | Create Person | Creates a new person in the Folk workspace with the specified details. Optional fields include: first name, last name, emails, phones, group assignments, and custom field values. The first email/phone in the list is treated as the primary contact. Returns the created person with a unique ID, all provided fields, timestamps, and creator information. | | `FOLK_DELETE_COMPANY` | Delete Company | Tool to delete a company from the workspace (irreversible). Use after confirming this company should be removed. | | `FOLK_DELETE_NOTE` | Delete Note | Tool to delete an existing note in the workspace (irreversible). Use after confirming this note should be permanently removed. | | `FOLK_FOLK_DELETE_PERSON` | Delete Person | Tool to delete an existing person in the workspace (irreversible). Use after confirming this person should be permanently removed. | | `FOLK_DELETE_REMINDER` | Delete Reminder | Tool to delete an existing reminder in the workspace (irreversible). Use after confirming this reminder should be permanently removed. | | `FOLK_GET_COMPANY` | Get Company | Tool to retrieve an existing company by its ID. Use after authentication has been verified. | | `FOLK_GET_CURRENT_WORKSPACE_USER` | Get Current Workspace User | Tool to get details of the current authenticated workspace user. Use after authentication to retrieve the user's profile information. | | `FOLK_GET_NOTE` | Get Note | Tool to retrieve an existing note by its ID. Use when you need the full content and metadata of a specific note. | | `FOLK_GET_PERSON` | Get Person | Tool to retrieve an existing person by their ID. Use when you need full profile details of a person by their unique identifier. | | `FOLK_GET_USER` | Get User | Tool to retrieve a user by their unique identifier. Use when you need to get details of a specific workspace user. | | `FOLK_FOLK_LIST_COMPANIES` | List Companies | Tool to list companies in the workspace. Use when you need a paginated overview of companies, optionally filtered. | | `FOLK_LIST_GROUP_CUSTOM_FIELDS` | List Group Custom Fields | Tool to list custom fields for a specific group and entity type. Use after selecting a group and entity type to inspect available custom fields. | | `FOLK_LIST_GROUPS` | List Groups | Tool to list workspace groups. Use when you need to retrieve a paginated list of all workspace groups after authentication. | | `FOLK_LIST_NOTES` | List Notes | Tool to list notes in the workspace. Use when you need to retrieve notes with pagination support. | | `FOLK_LIST_PEOPLE` | List People | Tool to list people in the workspace. Use when you need to paginate through contacts after authentication. | | `FOLK_LIST_REMINDERS` | List Reminders | Tool to list reminders in the workspace. Use when you need a paginated overview of reminders, optionally filtered by entity. | | `FOLK_LIST_USERS` | List Users | Tool to list workspace users. Use when you need to paginate through users list. | | `FOLK_LIST_WEBHOOKS` | List Webhooks | Tool to list webhooks in the workspace. Use when you need to retrieve configured webhooks with pagination support. | | `FOLK_UPDATE_COMPANY` | Update Company | Tool to update an existing company in the workspace. Use after confirming the company ID; only provided fields are updated and list fields replace existing values. | | `FOLK_UPDATE_NOTE` | Update Note | Tool to update an existing note in the workspace. Use after confirming the note ID; only provided fields are updated. | | `FOLK_UPDATE_PERSON` | Update Person | Tool to update an existing person in the workspace. Use after confirming the person ID; only provided fields are updated and list fields replace existing values. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Folk MCP server is an implementation of the Model Context Protocol that connects your AI agent to Folk. It provides structured and secure access so your agent can perform Folk 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 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 ### 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 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](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs). - Go to Settings and copy your API key. - This key lets your Mastra agent talk to Composio and reach Folk through MCP. ### 2. Install dependencies 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 ```bash npm install @composio/core @mastra/core @mastra/mcp @ai-sdk/openai 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 - COMPOSIO_USER_ID tells Composio which user this session belongs to - OPENAI_API_KEY lets the Mastra agent call OpenAI models ```bash COMPOSIO_API_KEY=your_composio_api_key_here COMPOSIO_USER_ID=your_user_id_here OPENAI_API_KEY=your_openai_api_key_here ``` ### 4. Import libraries and validate environment 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 ```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, }); ``` ### 5. Create a Tool Router session for Folk What's happening: - create spins up a short-lived MCP HTTP endpoint for this user - The toolkits array contains "folk" for Folk access - session.mcp.url is the MCP URL that Mastra's MCPClient will connect to ```typescript async function main() { const session = await composio.create( composioUserID as string, { toolkits: ["folk"], }, ); const composioMCPUrl = session.mcp.url; console.log("Folk MCP URL:", composioMCPUrl); ``` ### 6. Configure Mastra MCP client and fetch tools 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 Folk toolkit ```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); ``` ### 7. Create the Mastra agent 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 ```typescript const agent = new Agent({ name: "folk-mastra-agent", instructions: "You are an AI agent with Folk tools via Composio.", model: "openai/gpt-5", }); ``` ### 8. Set up interactive chat interface What's happening: - messages keeps the full conversation history in Mastra's expected format - agent.generate runs the agent with conversation history and Folk 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 ```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: { folk: 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); }); ``` ## Complete Code ```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: ["folk"], }); const composioMCPUrl = session.mcp.url; const mcpClient = new MCPClient({ id: composioUserID as string, servers: { folk: { url: new URL(composioMCPUrl), requestInit: { headers: session.mcp.headers, }, }, }, timeout: 30_000, }); const composioTools = await mcpClient.getTools(); const agent = new Agent({ name: "folk-mastra-agent", instructions: "You are an AI agent with Folk 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: { folk: 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 Folk 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 Folk MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/folk/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/folk/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/folk/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/folk/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/folk/framework/codex) - [OpenClaw](https://composio.dev/toolkits/folk/framework/openclaw) - [Hermes](https://composio.dev/toolkits/folk/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/folk/framework/cli) - [Google ADK](https://composio.dev/toolkits/folk/framework/google-adk) - [LangChain](https://composio.dev/toolkits/folk/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/folk/framework/ai-sdk) - [LlamaIndex](https://composio.dev/toolkits/folk/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/folk/framework/crew-ai) ## Related Toolkits - [Hubspot](https://composio.dev/toolkits/hubspot) - HubSpot is an all-in-one marketing, sales, and customer service platform. It lets teams nurture leads, automate outreach, and track every customer interaction in one place. - [Pipedrive](https://composio.dev/toolkits/pipedrive) - Pipedrive is a sales management platform offering pipeline visualization, lead tracking, and workflow automation. It helps sales teams keep deals moving forward efficiently and never miss a follow-up. - [Salesforce](https://composio.dev/toolkits/salesforce) - Salesforce is a leading CRM platform that helps businesses manage sales, service, and marketing. It centralizes customer data, enabling teams to drive growth and build strong relationships. - [Apollo](https://composio.dev/toolkits/apollo) - Apollo is a CRM and lead generation platform that helps businesses discover contacts and manage sales pipelines. Use it to streamline customer outreach and track your deals from one place. - [Attio](https://composio.dev/toolkits/attio) - Attio is a customizable CRM and workspace for managing your team's relationships and workflows. It helps teams organize contacts, automate tasks, and collaborate more efficiently. - [Acculynx](https://composio.dev/toolkits/acculynx) - AccuLynx is a cloud-based roofing business management software for contractors. It streamlines project tracking, lead management, and document sharing. - [Addressfinder](https://composio.dev/toolkits/addressfinder) - Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time. - [Affinity](https://composio.dev/toolkits/affinity) - Affinity is a relationship intelligence CRM that helps private capital investors find, manage, and close more deals. It streamlines deal flow and surfaces key connections to help you win opportunities. - [Agencyzoom](https://composio.dev/toolkits/agencyzoom) - AgencyZoom is a sales and performance platform built for P&C insurance agencies. It helps agents boost sales, retain clients, and analyze producer results in one place. - [Bettercontact](https://composio.dev/toolkits/bettercontact) - Bettercontact is a smart contact enrichment tool for finding emails and phone numbers. It helps boost lead generation with automated, waterfall search across multiple sources. - [Blackbaud](https://composio.dev/toolkits/blackbaud) - Blackbaud provides cloud-based software for nonprofits, schools, and healthcare institutions. It streamlines fundraising, donor management, and mission-driven operations. - [Brilliant directories](https://composio.dev/toolkits/brilliant_directories) - Brilliant Directories is an all-in-one platform for building and managing online membership communities and business directories. It streamlines listings, member management, and engagement tools into a single, easy interface. - [Capsule crm](https://composio.dev/toolkits/capsule_crm) - Capsule CRM is a user-friendly CRM platform for managing contacts and sales pipelines. It helps businesses organize relationships and streamline their sales process efficiently. - [Centralstationcrm](https://composio.dev/toolkits/centralstationcrm) - CentralStationCRM is an easy-to-use CRM software focused on collaboration and long-term customer relationships. It helps teams manage contacts, deals, and communications all in one place. - [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time. - [Close](https://composio.dev/toolkits/close) - Close is a CRM platform built for sales teams, combining calling, email automation, and predictive dialers. It streamlines sales workflows and boosts productivity with all-in-one communication tools. - [Dropcontact](https://composio.dev/toolkits/dropcontact) - Dropcontact is a B2B email finder and data enrichment service for professionals. It delivers verified email addresses and enriches contact info with up-to-date data. - [Dynamics365](https://composio.dev/toolkits/dynamics365) - Dynamics 365 is Microsoft's platform combining CRM, ERP, and productivity apps. It streamlines sales, marketing, service, and operations in one place. - [Espocrm](https://composio.dev/toolkits/espocrm) - EspoCRM is an open-source web application for managing customer relationships. It helps businesses organize contacts, track leads, and streamline their sales process. - [Fireberry](https://composio.dev/toolkits/fireberry) - Fireberry is a CRM platform that streamlines customer and sales management. It helps businesses organize contacts, automate sales, and integrate with other business tools. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Folk MCP? With a standalone Folk MCP server, the agents and LLMs can only access a fixed set of Folk tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Folk 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 Folk tools. ### Can I manage the permissions and scopes for Folk while using Tool Router? Yes, absolutely. You can configure which Folk 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 Folk data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) ยท [Composio docs](https://docs.composio.dev/llms.txt)