# How to integrate Handwrytten MCP with Vercel AI SDK v6 ```json { "title": "How to integrate Handwrytten MCP with Vercel AI SDK v6", "toolkit": "Handwrytten", "toolkit_slug": "handwrytten", "framework": "Vercel AI SDK", "framework_slug": "ai-sdk", "url": "https://composio.dev/toolkits/handwrytten/framework/ai-sdk", "markdown_url": "https://composio.dev/toolkits/handwrytten/framework/ai-sdk.md", "updated_at": "2026-03-29T06:36:59.502Z" } ``` ## Introduction This guide walks you through connecting Handwrytten to Vercel AI SDK v6 using the Composio tool router. By the end, you'll have a working Handwrytten agent that can send a thank you card to john doe, schedule a handwritten birthday note delivery, list all pending handwrytten orders through natural language commands. This guide will help you understand how to give your Vercel AI SDK agent real control over a Handwrytten account through Composio's Handwrytten MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved. ## Also integrate Handwrytten with - [OpenAI Agents SDK](https://composio.dev/toolkits/handwrytten/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/handwrytten/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/handwrytten/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/handwrytten/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/handwrytten/framework/codex) - [OpenClaw](https://composio.dev/toolkits/handwrytten/framework/openclaw) - [Hermes](https://composio.dev/toolkits/handwrytten/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/handwrytten/framework/cli) - [Google ADK](https://composio.dev/toolkits/handwrytten/framework/google-adk) - [LangChain](https://composio.dev/toolkits/handwrytten/framework/langchain) - [Mastra AI](https://composio.dev/toolkits/handwrytten/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/handwrytten/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/handwrytten/framework/crew-ai) ## TL;DR Here's what you'll learn: - How to set up and configure a Vercel AI SDK agent with Handwrytten integration - Using Composio's Tool Router to dynamically load and access Handwrytten 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 Handwrytten MCP server, and what's possible with it? The Handwrytten MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Handwrytten account. It provides structured and secure access so your agent can perform Handwrytten operations on your behalf. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `HANDWRYTTEN_ADD_RECIPIENT` | Add Recipient | Tool to add a recipient address to the user's addressbook in Handwrytten. Use when you need to store a new recipient for sending handwritten cards. | | `HANDWRYTTEN_CALCULATE_ORDER_TAXES` | Calculate Order Taxes | Tool to calculate taxes for Handwrytten basket orders. Use without any parameters for basket orders, or optionally provide order details to calculate taxes for a specific order (experimental). | | `HANDWRYTTEN_CHECK_AUTH` | Check Authentication | Tool to verify API key authentication validity for Handwrytten. Use when you need to test if the API credentials are valid and properly configured. | | `HANDWRYTTEN_CLEAR_BASKET` | Clear Basket | Tool to clear all items from the shopping basket. Use when you need to empty the basket and remove all pending items before starting a new order or canceling the current selection. | | `HANDWRYTTEN_CREATE_TEMPLATE` | Create Template | Tool to create a new template for the current user. Use when you need to save a new message template for sending handwritten cards. | | `HANDWRYTTEN_CREATE_USER_ADDRESS` | Create User Address | Tool to create a new user address in Handwrytten. Use when adding a new return address to a user's profile for sending handwritten cards. | | `HANDWRYTTEN_DELETE_CUSTOM_IMAGE` | Delete Custom Image | Tool to delete a custom image/logo from Handwrytten. Use when you need to remove a previously uploaded custom image or logo from your account. | | `HANDWRYTTEN_DELETE_RECIPIENT_ADDRESS` | Delete Recipient Address | Tool to delete one or more recipient addresses from user's profile. Use when you need to remove saved recipient addresses. Provide either address_id for single deletion or address_ids for bulk deletion. | | `HANDWRYTTEN_DELETE_TEMPLATE` | Delete Template | Tool to delete a user's template by its ID. Use when you need to remove a saved template from the user's account. | | `HANDWRYTTEN_GET_BASKET_NEW_METHOD` | Get Basket (New Method) | Tool to retrieve the user's basket using the new method. Use when you need to fetch the current state of the shopping basket with all items, billing information, and totals. | | `HANDWRYTTEN_GET_BASKET_COUNT` | Get Basket Count | Tool to retrieve the count of items currently in the basket. Use when you need to check how many items are in the shopping basket before proceeding with checkout or additional operations. | | `HANDWRYTTEN_GET_BASKET_ITEM` | Get Basket Item | Tool to retrieve a basket item by its ID from Handwrytten. Use when you need to get details of a specific basket item. | | `HANDWRYTTEN_GET_CARD_DETAILS` | Get Card Details | Tool to get detailed information about a specific card in the Handwrytten catalog. Use when you need comprehensive details about a card including pricing, dimensions, images, and customization options. | | `HANDWRYTTEN_GET_LIST_OF_ADDRESSES` | Get List of Addresses | Tool to retrieve a list of all addresses associated with the user's account. Use when you need to view or select from saved addresses for sending handwritten cards. | | `HANDWRYTTEN_GET_RANDOM_CARDS` | Get Random Cards | Tool to retrieve random cards from Handwrytten. Use when you need to get a random selection of greeting cards from the Handwrytten catalog. | | `HANDWRYTTEN_GET_TEMPLATE_DETAILS` | Get Template Details | Tool to get detailed information about a card text template in the Handwrytten catalog. Use when you need to view the template message content and details. | | `HANDWRYTTEN_GET_CURRENT_USER_INFO` | Get Current User Info | Tool to retrieve information about the currently authenticated user. Use when you need to fetch user profile details, account information, or verify authentication status. | | `HANDWRYTTEN_GET_USER_ADDRESS` | Get User Address | Tool to retrieve the authenticated user's address and billing information. Use when you need to access user profile address details. | | `HANDWRYTTEN_LIST_BASKET_ORDERS_GROUPED` | List Basket Orders Grouped | Tool to list all basket orders grouped by basket. Use when you need to retrieve all items currently in the user's basket or review pending orders. | | `HANDWRYTTEN_LIST_PAST_BASKETS` | List Past Baskets | Tool to retrieve a list of user's past baskets. Use when you need to view historical basket information including orders, recipients, and totals. | | `HANDWRYTTEN_LIST_CARDS` | List Cards | Tool to retrieve a list of available Handwrytten cards with optional filtering and pagination. Use when browsing card catalog or searching for specific card types. | | `HANDWRYTTEN_LIST_CATEGORIES` | List Categories | Tool to retrieve the list of available card categories from Handwrytten. Use when you need to display category options or filter cards by category. | | `HANDWRYTTEN_LIST_COUNTRIES` | List Countries | Tool to retrieve the list of countries available in Handwrytten. Use when you need to get available countries for sending handwritten cards. | | `HANDWRYTTEN_LIST_CREDIT_CARDS` | List Credit Cards | Tool to list all credit cards associated with the Handwrytten account. Use when you need to retrieve stored payment methods and billing information. | | `HANDWRYTTEN_LIST_FONTS` | List Fonts | Tool to retrieve the list of available handwriting fonts. Use when you need to display font options or select a font for a handwritten message. | | `HANDWRYTTEN_LIST_FONTS_FOR_CUSTOMIZER` | List Fonts for Customizer | Tool to list fonts available for use with the card customizer. Use when you need to retrieve available font options for customizing handwritten cards. | | `HANDWRYTTEN_LIST_GIFT_CARDS` | List Gift Cards | Tool to retrieve the list of available gift cards with their denominations and pricing. Use when you need to see what gift card options are available for purchase through the Handwrytten API. | | `HANDWRYTTEN_LIST_CUSTOM_USER_IMAGES` | List Custom User Images | Tool to retrieve a list of custom user images uploaded to Handwrytten. Use when you need to browse or manage custom cover images or logos. | | `HANDWRYTTEN_LIST_INSERTS` | List Inserts | Tool to retrieve a list of available inserts from Handwrytten. Use when you need to view all inserts that can be included with handwritten cards. | | `HANDWRYTTEN_LIST_ORDERS` | List Orders | Tool to retrieve a list of user's past orders from Handwrytten. Use when you need to view order history or check the status of previously placed orders. | | `HANDWRYTTEN_LIST_ORDERS_GROUPED` | List Orders Grouped | Tool to retrieve the user's order history grouped by basket. Use when you need to view or analyze past orders. | | `HANDWRYTTEN_LIST_PAST_ORDERS` | List Past Orders | Tool to retrieve a list of user's past orders from Handwrytten API. Use when you need to view order history or check the status of previously placed orders. | | `HANDWRYTTEN_LIST_RECIPIENTS` | List Recipients | Tool to retrieve a list of recipient addresses that the user has previously saved. Use when you need to view or select from saved recipient addresses for sending handwritten cards. | | `HANDWRYTTEN_LIST_SIGNATURES` | List Signatures | Tool to retrieve the list of available signatures for use in card orders. Use when you need to display signature options or select a signature for a handwritten message. | | `HANDWRYTTEN_LIST_STATES` | List States | Tool to retrieve the list of states/provinces available in Handwrytten. Use when you need to get available states for addressing handwritten cards. | | `HANDWRYTTEN_LIST_TEMPLATE_CATEGORIES` | List Template Categories | Tool to retrieve the list of available template categories from Handwrytten. Use when you need to display template category options or filter templates by category. | | `HANDWRYTTEN_LIST_TEMPLATES` | List Templates | Tool to retrieve a list of card text templates from Handwrytten. Use when you need to display available templates or filter templates by category. | | `HANDWRYTTEN_LOGOUT_USER` | Logout User | Tool to logout user from Handwrytten application. Use when you need to terminate the current user session and invalidate the authentication token. | | `HANDWRYTTEN_PLACE_ORDER_IN_BASKET` | Place Order in Basket | Tool to add an order to the basket in Handwrytten. Use when you need to create a new handwritten card order with specified recipients, card design, message, and delivery details. The order can be placed immediately or scheduled for future delivery. | | `HANDWRYTTEN_REGISTER_USER` | Register User | Tool to register a new Handwrytten user account. Use when creating a new user with email and password. Sends activation email to user; user status is not_active until email is confirmed. | | `HANDWRYTTEN_REQUEST_PASSWORD_RESET` | Request Password Reset | Tool to request a password reset email for a Handwrytten account. Use when a user needs to reset their password and requires an email with reset instructions. The API will send an email with a password reset link if the provided email exists in the system, but will return success regardless to prevent email enumeration attacks. | | `HANDWRYTTEN_SET_DEFAULT_ADDRESS` | Set Default Address | Tool to set a default return address for the user in Handwrytten. Use when you need to designate a specific address as the default return address for sending handwritten cards. | | `HANDWRYTTEN_SET_TEST_MODE` | Set Test Mode | Tool to set test mode for the current Handwrytten user. Use when you need to enable or disable test mode for testing purposes. When enabled, cards will not be sent and money will be returned to the credit card. | | `HANDWRYTTEN_UPDATE_BASKET_ITEM` | Update Basket Item | Tool to update an existing basket item in Handwrytten. Use when you need to modify card details, recipient addresses, messages, or other basket item properties. | | `HANDWRYTTEN_UPDATE_BILLING_INFORMATION` | Update Billing Information | Tool to update user billing information (country, zip, address) for tax calculations in Handwrytten. Use when updating billing address details for accurate tax computation. | | `HANDWRYTTEN_UPDATE_RECIPIENT` | Update Recipient | Tool to update a recipient address in the user's addressbook in Handwrytten. Use when you need to modify an existing recipient's address details. | | `HANDWRYTTEN_UPDATE_TEMPLATE` | Update Template | Tool to update an existing user template in Handwrytten. Use when you need to modify a template's name or message content. | | `HANDWRYTTEN_UPLOAD_CUSTOM_LOGO` | Upload Custom Logo | Tool to upload a custom image (logo or cover) to Handwrytten for use with custom cards. Use when you need to add a custom logo or cover image that can be referenced in future card creation requests. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Handwrytten MCP server is an implementation of the Model Context Protocol that connects your AI agent to Handwrytten. It provides structured and secure access so your agent can perform Handwrytten 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 Handwrytten 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 Handwrytten-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: ["handwrytten"], }); 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 Handwrytten 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 handwrytten, 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 Handwrytten 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("\n👋 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: ["handwrytten"], }); 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 handwrytten, 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("\n👋 Session ended."); process.exit(0); }); } main().catch((err) => { console.error("Fatal error:", err); process.exit(1); }); ``` ## Conclusion You've successfully built a Handwrytten 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 Handwrytten MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/handwrytten/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/handwrytten/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/handwrytten/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/handwrytten/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/handwrytten/framework/codex) - [OpenClaw](https://composio.dev/toolkits/handwrytten/framework/openclaw) - [Hermes](https://composio.dev/toolkits/handwrytten/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/handwrytten/framework/cli) - [Google ADK](https://composio.dev/toolkits/handwrytten/framework/google-adk) - [LangChain](https://composio.dev/toolkits/handwrytten/framework/langchain) - [Mastra AI](https://composio.dev/toolkits/handwrytten/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/handwrytten/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/handwrytten/framework/crew-ai) ## Related Toolkits - [Google Sheets](https://composio.dev/toolkits/googlesheets) - Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly. - [Notion](https://composio.dev/toolkits/notion) - Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place. - [Airtable](https://composio.dev/toolkits/airtable) - Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations. - [Asana](https://composio.dev/toolkits/asana) - Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals. - [Google Tasks](https://composio.dev/toolkits/googletasks) - Google Tasks is a to-do list and task management tool integrated into Gmail and Google Calendar. It helps you organize, track, and complete tasks across your Google ecosystem. - [Linear](https://composio.dev/toolkits/linear) - Linear is a modern issue tracking and project planning tool for fast-moving teams. It helps streamline workflows, organize projects, and boost productivity. - [Jira](https://composio.dev/toolkits/jira) - Jira is Atlassian’s platform for bug tracking, issue tracking, and agile project management. It helps teams organize work, prioritize tasks, and deliver projects efficiently. - [Clickup](https://composio.dev/toolkits/clickup) - ClickUp is an all-in-one productivity platform for managing tasks, docs, goals, and team collaboration. It streamlines project workflows so teams can work smarter and stay organized in one place. - [Monday](https://composio.dev/toolkits/monday) - Monday.com is a customizable work management platform for project planning and collaboration. It helps teams organize tasks, automate workflows, and track progress in real time. - [Reddit](https://composio.dev/toolkits/reddit) - Reddit is a social news platform with thriving user-driven communities (subreddits). It's the go-to place for discussion, content sharing, and viral marketing. - [Facebook](https://composio.dev/toolkits/facebook) - Facebook is a social media and advertising platform for businesses and creators. It helps you connect, share, and manage content across your public Facebook Pages. - [Linkedin](https://composio.dev/toolkits/linkedin) - LinkedIn is a professional networking platform for connecting, sharing content, and engaging with business opportunities. It's the go-to place for building your professional brand and unlocking new career connections. - [Active campaign](https://composio.dev/toolkits/active_campaign) - ActiveCampaign is a marketing automation and CRM platform for managing email campaigns, sales pipelines, and customer segmentation. It helps businesses engage customers and drive growth through smart automation and targeted outreach. - [ActiveTrail](https://composio.dev/toolkits/active_trail) - ActiveTrail is a user-friendly email marketing and automation platform. It helps you reach subscribers and automate campaigns with ease. - [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. - [Aeroleads](https://composio.dev/toolkits/aeroleads) - Aeroleads is a B2B lead generation platform for finding business emails and phone numbers. Grow your sales pipeline faster with powerful prospecting tools. - [Agiled](https://composio.dev/toolkits/agiled) - Agiled is an all-in-one business management platform for CRM, projects, and finance. It helps you streamline workflows, consolidate client data, and manage business processes in one place. - [Ahrefs](https://composio.dev/toolkits/ahrefs) - Ahrefs is an SEO and marketing platform for site audits, keyword research, and competitor insights. It helps you improve search rankings and drive organic traffic. - [Amcards](https://composio.dev/toolkits/amcards) - AMCards lets you create and mail personalized greeting cards online. Build stronger customer relationships with easy, automated card campaigns. - [Ascora](https://composio.dev/toolkits/ascora) - Ascora is a cloud-based field service management platform for service businesses. It streamlines scheduling, invoicing, and customer operations in one place. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Handwrytten MCP? With a standalone Handwrytten MCP server, the agents and LLMs can only access a fixed set of Handwrytten tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Handwrytten 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 Handwrytten tools. ### Can I manage the permissions and scopes for Handwrytten while using Tool Router? Yes, absolutely. You can configure which Handwrytten 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 Handwrytten data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)