# How to integrate Postgrid MCP with Mastra AI ```json { "title": "How to integrate Postgrid MCP with Mastra AI", "toolkit": "Postgrid", "toolkit_slug": "postgrid", "framework": "Mastra AI", "framework_slug": "mastra-ai", "url": "https://composio.dev/toolkits/postgrid/framework/mastra-ai", "markdown_url": "https://composio.dev/toolkits/postgrid/framework/mastra-ai.md", "updated_at": "2026-05-12T10:22:27.805Z" } ``` ## Introduction This guide walks you through connecting Postgrid to Mastra AI using the Composio tool router. By the end, you'll have a working Postgrid agent that can send a letter to new customer address, verify and standardize a shipping address, create a reusable postcard template through natural language commands. This guide will help you understand how to give your Mastra AI agent real control over a Postgrid account through Composio's Postgrid MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved. ## Also integrate Postgrid with - [OpenAI Agents SDK](https://composio.dev/toolkits/postgrid/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/postgrid/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/postgrid/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/postgrid/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/postgrid/framework/codex) - [OpenClaw](https://composio.dev/toolkits/postgrid/framework/openclaw) - [Hermes](https://composio.dev/toolkits/postgrid/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/postgrid/framework/cli) - [Google ADK](https://composio.dev/toolkits/postgrid/framework/google-adk) - [LangChain](https://composio.dev/toolkits/postgrid/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/postgrid/framework/ai-sdk) - [LlamaIndex](https://composio.dev/toolkits/postgrid/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/postgrid/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 Postgrid tools - Connect Mastra's MCP client to the Composio generated MCP URL - Fetch Postgrid 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 Postgrid 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 Postgrid MCP server, and what's possible with it? The Postgrid MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Postgrid account. It provides structured and secure access to your direct mail and address automation tools, so your agent can verify addresses, send letters, manage contacts, and handle templates for your business communications—all without manual intervention. - Automated letter sending: Have your agent create and send physical letters on demand, handling recipient, sender, and content details seamlessly. - Contact management: Effortlessly add, update, or delete contacts in your Postgrid account to keep your mailing lists accurate and up to date. - Template creation and maintenance: Let your agent generate reusable mail templates with dynamic placeholders, and remove outdated templates as needed. - Bank account and payment management: Create or delete bank accounts associated with print and mail services, ensuring smooth financial operations for mail automation. - Webhook setup and monitoring: Enable your agent to create or remove webhooks to track events and receive real-time notifications for your mail orders and services. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `POSTGRID_CANCEL_BOX` | Cancel Box | Tool to cancel a box order by its ID. Use when you need to cancel a pending box shipment. | | `POSTGRID_CANCEL_CHEQUE` | Cancel Cheque | Tool to cancel a cheque order by its ID. Only works when the cheque has 'ready' status. Use when you need to cancel a pending cheque before it is mailed. | | `POSTGRID_CANCEL_CHEQUE_WITH_NOTE` | Cancel Cheque with Note | Tool to cancel a cheque order with a cancellation note. Use when you need to cancel a cheque and provide a reason for the cancellation. | | `POSTGRID_CANCEL_POSTCARD` | Cancel Postcard | Tool to cancel a postcard order. Use when you need to cancel a postcard that has status 'ready'. | | `POSTGRID_CANCEL_POSTCARD_WITH_NOTE` | Cancel Postcard With Note | Tool to cancel a postcard order with an optional cancellation note. Use when you need to cancel a postcard that is in 'ready' status. Once cancelled, the status changes to 'cancelled' and the response includes cancellation details. | | `POSTGRID_CANCEL_RETURN_ENVELOPE_ORDER` | Cancel Return Envelope Order | Tool to cancel a return envelope order. Use when you need to cancel a pending return envelope order using the return envelope ID and order ID. | | `POSTGRID_CREATE_BANK_ACCOUNT` | CREATE_BANK_ACCOUNT | Tool to create a new bank account for print & mail service. | | `POSTGRID_CREATE_BOX` | Create Box | Tool to create a box mailing order for letters with plastic cards or cheques. Use when you need to send multiple cheques in a secure box. | | `POSTGRID_CREATE_CHEQUE` | Create Cheque | Tool to create a cheque order for physical cheque mailing. Use when you need to send a payment via printed cheque. Requires a valid bank account ID and recipient contact details. | | `POSTGRID_CREATE_CONTACT` | Create Contact | Tool to create a new contact in PostGrid. Use after collecting contact's name, address, and optional metadata. | | `POSTGRID_CREATE_LETTER` | Create Letter | Tool to create and send a letter via PostGrid. Use when recipient, sender, and content details are ready. | | `POSTGRID_CREATE_POSTCARD` | Create Postcard | Tool to create and send a postcard via PostGrid. Use when recipient, sender, and content (HTML, template, or PDF) are ready. | | `POSTGRID_CREATE_RETURN_ENVELOPE` | Create Return Envelope | Tool to create a return envelope for mail recipients to respond. Use when you need to include a prepaid return envelope for recipients to send back responses. | | `POSTGRID_CREATE_RETURN_ENVELOPE_ORDER` | Create Return Envelope Order | Tool to create a batch order of return envelopes to be printed and delivered. Use when you need to order return envelopes in bulk (minimum 5000 units). | | `POSTGRID_CREATE_TEMPLATE` | Create Template | Tool to create a new mail template in PostGrid. Use when you need to define reusable HTML content with dynamic placeholders. Use after confirming required template details. | | `POSTGRID_CREATE_TEMPLATE_EDITOR_SESSION` | Create Template Editor Session | Tool to create a template editor session for interactive template editing. Use when you need to generate an embeddable URL for editing a template. The session URL allows users to modify template HTML content in a visual editor. | | `POSTGRID_CREATE_TRACKER` | Create Tracker | Tool to create a tracker for monitoring mail delivery status via URL tracking. Use when you need to track recipient engagement with personalized URLs. | | `POSTGRID_CREATE_WEBHOOK` | Create Webhook | Tool to create a new webhook to receive order event notifications. Use after configuring your endpoint to handle webhook payloads. | | `POSTGRID_DELETE_BANK_ACCOUNT` | Delete Bank Account | Tool to delete a bank account by its ID. Use when you need to remove a bank account after confirming its identifier. | | `POSTGRID_DELETE_CONTACT` | Delete Contact | Tool to delete a contact by its ID. Use when you need to remove obsolete contacts after confirming their identifier. | | `POSTGRID_DELETE_TEMPLATE` | Delete Template | Tool to delete a template by its ID. Use when you need to remove an existing template after confirming its identifier. | | `POSTGRID_DELETE_TEMPLATE_EDITOR_SESSION` | Delete Template Editor Session | Tool to delete a template editor session by its ID. Use when you need to remove an existing template editor session. | | `POSTGRID_DELETE_TRACKER` | Delete Tracker | Tool to delete a tracker by its ID. Use when you need to remove an existing tracker after confirming its identifier. | | `POSTGRID_DELETE_WEBHOOK` | Delete Webhook | Tool to delete a webhook subscription. Use when you need to remove an existing webhook by its ID. | | `POSTGRID_FILL_TEST_RETURN_ENVELOPE_ORDER` | Fill Test Return Envelope Order | Tool to fill a test return envelope order for testing purposes. This simulates filling a return envelope order in test mode, changing the status from 'placed' to 'filled'. Only works in test mode. | | `POSTGRID_GET_BANK_ACCOUNT` | Get Bank Account | Tool to retrieve a bank account. Use after obtaining the bank account ID to fetch its details. | | `POSTGRID_GET_BOX` | Get Box | Tool to retrieve a specific box order by ID. Use after obtaining the box ID to fetch its details. | | `POSTGRID_GET_CHEQUE` | Get Cheque | Tool to retrieve a specific cheque by ID. Use when you need to fetch details of a specific cheque order. | | `POSTGRID_GET_CONTACT` | Get Contact | Tool to retrieve a contact. Use after obtaining the contact ID to fetch its details. | | `POSTGRID_GET_LETTER` | Get Letter | Tool to retrieve a letter. Use after you have the letter ID to fetch its details. | | `POSTGRID_GET_POSTCARD` | Get Postcard | Tool to retrieve a specific postcard by ID. Use when you have a postcard ID and need to fetch its details. | | `POSTGRID_GET_RETURN_ENVELOPE` | Get Return Envelope | Tool to retrieve a return envelope. Use after obtaining the return envelope ID to fetch its details. | | `POSTGRID_GET_RETURN_ENVELOPE_ORDER` | Get Return Envelope Order | Tool to retrieve a specific return envelope order. Use when you need to get details about an order by its return envelope ID and order ID. | | `POSTGRID_GET_TEMPLATE` | Get Template | Tool to retrieve a template. Use when you have the template ID and need its details. | | `POSTGRID_GET_TRACKER` | Get Tracker | Tool to retrieve a tracker. Use when you have the tracker ID and need its details. | | `POSTGRID_GET_WEBHOOK` | Get Webhook | Tool to retrieve details of a specific webhook by its ID. Use after creating a webhook to fetch its configuration and status. | | `POSTGRID_LIST_BANK_ACCOUNTS` | List Bank Accounts | Tool to list bank accounts. Use when retrieving bank accounts with optional status filter and pagination. | | `POSTGRID_LIST_BOXES` | List Box Orders | Tool to list box orders. Use when you need to retrieve a paginated list of box orders from PostGrid. | | `POSTGRID_LIST_CHEQUES` | List Cheques | Tool to list cheques with optional filters and pagination. Use when you need to retrieve batches of cheque records for processing or reporting. | | `POSTGRID_LIST_CONTACTS` | List Contacts | Tool to list contacts. Use when you need to retrieve a paginated list of contacts with optional filters like date range, metadata, name, or email. | | `POSTGRID_LIST_EVENTS` | List Webhook Events | Tool to retrieve a list of webhook events with optional pagination. Use when you need to view all webhook events that have occurred. | | `POSTGRID_LIST_LETTERS` | List Letters | Tool to list letters. Use when retrieving letters with optional filters and pagination. | | `POSTGRID_LIST_POSTAL_STATEMENTS` | List Postal Statements | Tool to list all postal statements for billing and tracking purposes. Use when you need to retrieve statements for accounting or audit purposes. | | `POSTGRID_LIST_POSTCARDS` | List Postcards | Tool to retrieve a list of postcards with optional filtering and pagination. Use when you need to browse or filter postcards list. | | `POSTGRID_LIST_RETURN_ENVELOPE_ORDERS` | List Return Envelope Orders | Tool to list all return envelope orders for a specific return envelope. Use when retrieving orders associated with a return envelope ID. | | `POSTGRID_LIST_RETURN_ENVELOPES` | List Return Envelopes | Tool to list return envelopes. Use when you need to retrieve a paginated list of business reply envelopes (BREs) with optional pagination. | | `POSTGRID_LIST_SELF_MAILERS` | List Self-Mailers | Tool to list self-mailers. Use when you need to fetch self-mailers with filters and pagination. | | `POSTGRID_LIST_SUB_ORGANIZATIONS` | List Sub-Organizations | Tool to list sub-organizations. Use when you need to retrieve a paginated list of sub-organizations with optional search filter. | | `POSTGRID_LIST_TEMPLATE_EDITOR_SESSIONS` | List Template Editor Sessions | Tool to list template editor sessions. Use when you need to retrieve a paginated list of template editor sessions. | | `POSTGRID_LIST_TEMPLATES` | List Templates | Tool to list templates. Use when you need to retrieve a paginated list of templates with optional type filtering. | | `POSTGRID_LIST_TRACKERS` | List Trackers | Tool to list all trackers. Use when you need to retrieve a paginated list of trackers for tracking mail interactions. | | `POSTGRID_LIST_TRACKER_VISITS` | List Tracker Visits | Tool to list all visits for a tracker. Use when you need to retrieve visit information including device, IP address, and referred tracker/order ID for each visit. | | `POSTGRID_LIST_WEBHOOK_INVOCATIONS` | List Webhook Invocations | Tool to list previous invocations of a webhook with response status codes. Use when you need to view the history of webhook delivery attempts and their outcomes. | | `POSTGRID_LIST_WEBHOOKS` | List Webhooks | Tool to retrieve a list of configured webhooks with optional filtering and pagination. Use when you need to view your webhooks. | | `POSTGRID_PROGRESS_TEST_BOX` | Progress Test Box | Tool to progress a test box through processing stages for webhook testing. Use when testing webhook integration by advancing box status. | | `POSTGRID_PROGRESS_TEST_CHEQUE` | Progress Test Cheque | Tool to progress a test cheque through processing stages for webhook testing. Use when you need to simulate cheque status changes (ready -> printing -> processed_for_delivery -> completed) to test webhook integrations. | | `POSTGRID_PROGRESS_TEST_POSTCARD` | Progress Test Postcard | Tool to progress a test postcard through processing stages for webhook testing. Use when testing webhook integration by advancing postcard status. | | `POSTGRID_UPDATE_TEMPLATE` | Update Template | Tool to update an existing mail template in PostGrid. Use when you need to modify the HTML content, description, or metadata of a template. | | `POSTGRID_UPDATE_TRACKER` | Update Tracker | Tool to update an existing tracker's redirect URL template and/or expiration settings. Use when you need to modify tracker configuration after obtaining its identifier. | | `POSTGRID_UPDATE_WEBHOOK` | Update Webhook | Tool to update an existing webhook configuration. Use when you need to modify webhook URL, events, or other settings. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Postgrid MCP server is an implementation of the Model Context Protocol that connects your AI agent to Postgrid. It provides structured and secure access so your agent can perform Postgrid 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 Postgrid 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 Postgrid What's happening: - create spins up a short-lived MCP HTTP endpoint for this user - The toolkits array contains "postgrid" for Postgrid 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: ["postgrid"], }, ); const composioMCPUrl = session.mcp.url; console.log("Postgrid 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 Postgrid 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: "postgrid-mastra-agent", instructions: "You are an AI agent with Postgrid 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 Postgrid 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: { postgrid: 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: ["postgrid"], }); const composioMCPUrl = session.mcp.url; const mcpClient = new MCPClient({ id: composioUserID as string, servers: { postgrid: { url: new URL(composioMCPUrl), requestInit: { headers: session.mcp.headers, }, }, }, timeout: 30_000, }); const composioTools = await mcpClient.getTools(); const agent = new Agent({ name: "postgrid-mastra-agent", instructions: "You are an AI agent with Postgrid 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: { postgrid: 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 Postgrid 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 Postgrid MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/postgrid/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/postgrid/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/postgrid/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/postgrid/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/postgrid/framework/codex) - [OpenClaw](https://composio.dev/toolkits/postgrid/framework/openclaw) - [Hermes](https://composio.dev/toolkits/postgrid/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/postgrid/framework/cli) - [Google ADK](https://composio.dev/toolkits/postgrid/framework/google-adk) - [LangChain](https://composio.dev/toolkits/postgrid/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/postgrid/framework/ai-sdk) - [LlamaIndex](https://composio.dev/toolkits/postgrid/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/postgrid/framework/crew-ai) ## Related Toolkits - [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable. - [Google Calendar](https://composio.dev/toolkits/googlecalendar) - Google Calendar is a time management service for scheduling meetings, events, and reminders. It streamlines personal and team organization with integrated notifications and sharing options. - [Google Drive](https://composio.dev/toolkits/googledrive) - Google Drive is a cloud storage platform for uploading, sharing, and collaborating on files. It's perfect for keeping your documents accessible and organized across devices. - [Outlook](https://composio.dev/toolkits/outlook) - Outlook is Microsoft's email and calendaring platform for unified communications and scheduling. It helps users stay organized with powerful email, contacts, and calendar management. - [Twitter](https://composio.dev/toolkits/twitter) - Twitter is a social media platform for sharing real-time updates, conversations, and news. Stay connected, informed, and engaged with communities worldwide. - [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. - [Supabase](https://composio.dev/toolkits/supabase) - Supabase is an open-source backend platform offering scalable Postgres databases, authentication, storage, and real-time APIs. It lets developers build modern apps without managing infrastructure. - [Composio](https://composio.dev/toolkits/composio) - Composio is an integration platform that connects AI agents with hundreds of business tools. It streamlines authentication and lets you trigger actions across services—no custom code needed. - [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. - [Slack](https://composio.dev/toolkits/slack) - Slack is a channel-based messaging platform for teams and organizations. It helps people collaborate in real time, share files, and connect all their tools 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. - [Google Docs](https://composio.dev/toolkits/googledocs) - Google Docs is a cloud-based word processor that enables document creation and real-time collaboration. Its seamless sharing and version history make team editing and content management a breeze. - [Google Super](https://composio.dev/toolkits/googlesuper) - Google Super is an all-in-one suite combining Gmail, Drive, Calendar, Sheets, Analytics, and more. It gives you a unified platform to manage your digital life, boosting productivity and organization. - [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. - [Codeinterpreter](https://composio.dev/toolkits/codeinterpreter) - Codeinterpreter is a Python-based coding environment with built-in data analysis and visualization. It lets you instantly run scripts, plot results, and prototype solutions inside supported platforms. - [Gong](https://composio.dev/toolkits/gong) - Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action. - [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. - [Ashby](https://composio.dev/toolkits/ashby) - Ashby is an applicant tracking system that handles job postings, candidate management, and hiring analytics. - [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. - [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. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Postgrid MCP? With a standalone Postgrid MCP server, the agents and LLMs can only access a fixed set of Postgrid tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Postgrid 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 Postgrid tools. ### Can I manage the permissions and scopes for Postgrid while using Tool Router? Yes, absolutely. You can configure which Postgrid 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 Postgrid data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)