# How to integrate Folk MCP with Vercel AI SDK v6 ```json { "title": "How to integrate Folk MCP with Vercel AI SDK v6", "toolkit": "Folk", "toolkit_slug": "folk", "framework": "Vercel AI SDK", "framework_slug": "ai-sdk", "url": "https://composio.dev/toolkits/folk/framework/ai-sdk", "markdown_url": "https://composio.dev/toolkits/folk/framework/ai-sdk.md", "updated_at": "2026-05-12T10:12:00.414Z" } ``` ## Introduction This guide walks you through connecting Folk to Vercel AI SDK v6 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 Vercel AI SDK 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) - [Mastra AI](https://composio.dev/toolkits/folk/framework/mastra-ai) - [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: - How to set up and configure a Vercel AI SDK agent with Folk integration - Using Composio's Tool Router to dynamically load and access Folk tools - Creating an MCP client connection using HTTP transport - Building an interactive CLI chat interface with conversation history management - Handling tool calls and results within the Vercel AI SDK framework ## What is Vercel AI SDK? The Vercel AI SDK is a TypeScript library for building AI-powered applications. It provides tools for creating agents that can use external services and maintain conversation state. Key features include: - streamText: Core function for streaming responses with real-time tool support - MCP Client: Built-in support for Model Context Protocol via @ai-sdk/mcp - Step Counting: Control multi-step tool execution with stopWhen: stepCountIs() - OpenAI Provider: Native integration with OpenAI models ## 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 you begin, make sure you have: - Node.js and npm installed - A Composio account with API key - An OpenAI API key ### 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 required dependencies First, install the necessary packages for your project. What you're installing: - @ai-sdk/openai: Vercel AI SDK's OpenAI provider - @ai-sdk/mcp: MCP client for Vercel AI SDK - @composio/core: Composio SDK for tool integration - ai: Core Vercel AI SDK - dotenv: Environment variable management ```bash npm install @ai-sdk/openai @ai-sdk/mcp @composio/core ai dotenv ``` ### 3. Set up environment variables Create a .env file in your project root. What's needed: - OPENAI_API_KEY: Your OpenAI API key for GPT model access - COMPOSIO_API_KEY: Your Composio API key for tool access - COMPOSIO_USER_ID: A unique identifier for the user session ```bash OPENAI_API_KEY=your_openai_api_key_here COMPOSIO_API_KEY=your_composio_api_key_here COMPOSIO_USER_ID=your_user_id_here ``` ### 4. Import required modules and validate environment What's happening: - We're importing all necessary libraries including Vercel AI SDK's OpenAI provider and Composio - The dotenv/config import automatically loads environment variables - The MCP client import enables connection to Composio's tool server ```typescript import "dotenv/config"; import { openai } from "@ai-sdk/openai"; import { Composio } from "@composio/core"; import * as readline from "readline"; import { streamText, type ModelMessage, stepCountIs } from "ai"; import { createMCPClient } from "@ai-sdk/mcp"; const composioAPIKey = process.env.COMPOSIO_API_KEY; const composioUserID = process.env.COMPOSIO_USER_ID; if (!process.env.OPENAI_API_KEY) 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, }); ``` ### 5. Create Tool Router session and initialize MCP client What's happening: - We're creating a Tool Router session that gives your agent access to Folk tools - The create method takes the user ID and specifies which toolkits should be available - The returned mcp object contains the URL and authentication headers needed to connect to the MCP server - This session provides access to all Folk-related tools through the MCP protocol ```typescript async function main() { // Create a tool router session for the user const session = await composio.create(composioUserID!, { toolkits: ["folk"], }); const mcpUrl = session.mcp.url; ``` ### 6. Connect to MCP server and retrieve tools What's happening: - We're creating an MCP client that connects to our Composio Tool Router session via HTTP - The mcp.url provides the endpoint, and mcp.headers contains authentication credentials - The type: "http" is important - Composio requires HTTP transport - tools() retrieves all available Folk tools that the agent can use ```typescript const mcpClient = await createMCPClient({ transport: { type: "http", url: mcpUrl, headers: session.mcp.headers, // Authentication headers for the Composio MCP server }, }); const tools = await mcpClient.tools(); ``` ### 7. Initialize conversation and CLI interface What's happening: - We initialize an empty messages array to maintain conversation history - A readline interface is created to accept user input from the command line - Instructions are displayed to guide the user on how to interact with the agent ```typescript let messages: ModelMessage[] = []; console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n"); console.log( "Ask any questions related to folk, like summarize my last 5 emails, send an email, etc... :)))\n", ); const rl = readline.createInterface({ input: process.stdin, output: process.stdout, prompt: "> ", }); rl.prompt(); ``` ### 8. Handle user input and stream responses with real-time tool feedback What's happening: - We use streamText instead of generateText to stream responses in real-time - toolChoice: "auto" allows the model to decide when to use Folk tools - stopWhen: stepCountIs(10) allows up to 10 steps for complex multi-tool operations - onStepFinish callback displays which tools are being used in real-time - We iterate through the text stream to create a typewriter effect as the agent responds - The complete response is added to conversation history to maintain context - Errors are caught and displayed with helpful retry suggestions ```typescript 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({ role: "user", content: trimmedInput }); console.log("\nAgent is thinking...\n"); try { const stream = streamText({ model: openai("gpt-5"), messages, tools, toolChoice: "auto", stopWhen: stepCountIs(10), onStepFinish: (step) => { for (const toolCall of step.toolCalls) { console.log(`[Using tool: ${toolCall.toolName}]`); } if (step.toolCalls.length > 0) { console.log(""); // Add space after tool calls } }, }); for await (const chunk of stream.textStream) { process.stdout.write(chunk); } console.log("\n\n---\n"); // Get final result for message history const response = await stream.response; if (response?.messages?.length) { messages.push(...response.messages); } } catch (error) { console.error("\nAn error occurred while talking to the agent:"); console.error(error); console.log( "\nYou can try again or restart the app if it keeps happening.\n", ); } finally { rl.prompt(); } }); rl.on("close", async () => { await mcpClient.close(); console.log("\n๐Ÿ‘‹ Session ended."); 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 { Composio } from "@composio/core"; import * as readline from "readline"; import { streamText, type ModelMessage, stepCountIs } from "ai"; import { createMCPClient } from "@ai-sdk/mcp"; const composioAPIKey = process.env.COMPOSIO_API_KEY; const composioUserID = process.env.COMPOSIO_USER_ID; if (!process.env.OPENAI_API_KEY) 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, }); async function main() { // Create a tool router session for the user const session = await composio.create(composioUserID!, { toolkits: ["folk"], }); const mcpUrl = session.mcp.url; const mcpClient = await createMCPClient({ transport: { type: "http", url: mcpUrl, headers: session.mcp.headers, // Authentication headers for the Composio MCP server }, }); const tools = await mcpClient.tools(); let messages: ModelMessage[] = []; console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n"); console.log( "Ask any questions related to folk, like summarize my last 5 emails, send an email, etc... :)))\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({ role: "user", content: trimmedInput }); console.log("\nAgent is thinking...\n"); try { const stream = streamText({ model: openai("gpt-5"), messages, tools, toolChoice: "auto", stopWhen: stepCountIs(10), onStepFinish: (step) => { for (const toolCall of step.toolCalls) { console.log(`[Using tool: ${toolCall.toolName}]`); } if (step.toolCalls.length > 0) { console.log(""); // Add space after tool calls } }, }); for await (const chunk of stream.textStream) { process.stdout.write(chunk); } console.log("\n\n---\n"); // Get final result for message history const response = await stream.response; if (response?.messages?.length) { messages.push(...response.messages); } } catch (error) { console.error("\nAn error occurred while talking to the agent:"); console.error(error); console.log( "\nYou can try again or restart the app if it keeps happening.\n", ); } finally { rl.prompt(); } }); rl.on("close", async () => { await mcpClient.close(); console.log("\n๐Ÿ‘‹ Session ended."); process.exit(0); }); } main().catch((err) => { console.error("Fatal error:", err); process.exit(1); }); ``` ## Conclusion You've successfully built a Folk agent using the Vercel AI SDK with streaming capabilities! This implementation provides a powerful foundation for building AI applications with natural language interfaces and real-time feedback. Key features of this implementation: - Real-time streaming responses for a better user experience with typewriter effect - Live tool execution feedback showing which tools are being used as the agent works - Dynamic tool loading through Composio's Tool Router with secure authentication - Multi-step tool execution with configurable step limits (up to 10 steps) - Comprehensive error handling for robust agent execution - Conversation history maintenance for context-aware responses You can extend this further by adding custom error handling, implementing specific business logic, or integrating additional Composio toolkits to create multi-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) - [Mastra AI](https://composio.dev/toolkits/folk/framework/mastra-ai) - [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 Vercel AI SDK v6? Yes, you can. Vercel AI SDK v6 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)