# How to integrate Gmail MCP with CrewAI ```json { "title": "How to integrate Gmail MCP with CrewAI", "toolkit": "Gmail", "toolkit_slug": "gmail", "framework": "CrewAI", "framework_slug": "crew-ai", "url": "https://composio.dev/toolkits/gmail/framework/crew-ai", "markdown_url": "https://composio.dev/toolkits/gmail/framework/crew-ai.md", "updated_at": "2026-05-06T08:13:39.350Z" } ``` ## Introduction This guide walks you through connecting Gmail to CrewAI using the Composio tool router. By the end, you'll have a working Gmail agent that can read emails, search your inbox, draft messages, manage labels, and organize threads through natural language commands. This guide will help you understand how to give your CrewAI agent real control over a Gmail account through Composio's Gmail MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved. ## Also integrate Gmail with - [ChatGPT](https://composio.dev/toolkits/gmail/framework/chatgpt) - [OpenAI Agents SDK](https://composio.dev/toolkits/gmail/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/gmail/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/gmail/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/gmail/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/gmail/framework/codex) - [Cursor](https://composio.dev/toolkits/gmail/framework/cursor) - [VS Code](https://composio.dev/toolkits/gmail/framework/vscode) - [OpenCode](https://composio.dev/toolkits/gmail/framework/opencode) - [OpenClaw](https://composio.dev/toolkits/gmail/framework/openclaw) - [Hermes](https://composio.dev/toolkits/gmail/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/gmail/framework/cli) - [Google ADK](https://composio.dev/toolkits/gmail/framework/google-adk) - [LangChain](https://composio.dev/toolkits/gmail/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/gmail/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/gmail/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/gmail/framework/llama-index) ## TL;DR Here's what you'll learn: - Get a Composio API key and configure your Gmail connection - Set up CrewAI with an MCP enabled agent - Create a Tool Router session or standalone MCP server for Gmail - Build a conversational loop where your agent can execute Gmail operations ## What is CrewAI? CrewAI is a powerful framework for building multi-agent AI systems. It provides primitives for defining agents with specific roles, creating tasks, and orchestrating workflows through crews. Key features include: - Agent Roles: Define specialized agents with specific goals and backstories - Task Management: Create tasks with clear descriptions and expected outputs - Crew Orchestration: Combine agents and tasks into collaborative workflows - MCP Integration: Connect to external tools through Model Context Protocol ## What is the Gmail MCP server, and what's possible with it? The Gmail MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Gmail account. It provides structured and secure access to your email, so your agent can search, read, draft, organize, and even manage contacts in your mailbox—all on your behalf. - Advanced email search and retrieval: Effortlessly instruct your agent to fetch emails by sender, subject, label, date, or keywords, and even retrieve full message content or threads. - Automated drafting and sending: Have your agent create new email drafts, craft replies, add CC/BCC, include attachments, and handle threading to streamline communication. - Smart label and inbox organization: Let the agent create new labels, apply or remove labels from emails, and keep your inbox clutter-free by archiving or moving messages. - Contact and thread management: Fetch your Gmail contacts, pull entire conversation threads, or download specific attachments to make follow-ups a breeze. - Email and draft cleanup: Direct your agent to permanently delete emails or drafts, helping you maintain a tidy mailbox with minimal effort. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `GMAIL_ADD_LABEL_TO_EMAIL` | Modify email labels | Adds and/or removes specified gmail labels for a message; ensure `message id` and all `label ids` are valid (use 'listlabels' for custom label ids). | | `GMAIL_CREATE_EMAIL_DRAFT` | Create email draft | Creates a gmail email draft, supporting to/cc/bcc, subject, plain/html body (ensure `is html=true` for html), attachments, and threading. | | `GMAIL_CREATE_LABEL` | Create label | Creates a new label with a unique name in the specified user's gmail account. | | `GMAIL_DELETE_DRAFT` | Delete Draft | Permanently deletes a specific gmail draft using its id; ensure the draft exists and the user has necessary permissions for the given `user id`. | | `GMAIL_DELETE_MESSAGE` | Delete message | Permanently deletes a specific email message by its id from a gmail mailbox; for `user id`, use 'me' for the authenticated user or an email address to which the authenticated user has delegated access. | | `GMAIL_FETCH_EMAILS` | Fetch emails | Fetches a list of email messages from a gmail account, supporting filtering, pagination, and optional full content retrieval. | | `GMAIL_FETCH_MESSAGE_BY_MESSAGE_ID` | Fetch message by message ID | Fetches a specific email message by its id, provided the `message id` exists and is accessible to the authenticated `user id`. | | `GMAIL_FETCH_MESSAGE_BY_THREAD_ID` | Fetch Message by Thread ID | Retrieves messages from a gmail thread using its `thread id`, where the thread must be accessible by the specified `user id`. | | `GMAIL_GET_ATTACHMENT` | Get Gmail attachment | Retrieves a specific attachment by id from a message in a user's gmail mailbox, requiring valid message and attachment ids. | | `GMAIL_GET_CONTACTS` | Get contacts | Fetches contacts (connections) for the authenticated google account, allowing selection of specific data fields and pagination. | | `GMAIL_GET_PEOPLE` | Get People | Retrieves either a specific person's details (using `resource name`) or lists 'other contacts' (if `other contacts` is true), with `person fields` specifying the data to return. | | `GMAIL_GET_PROFILE` | Get Profile | Retrieves key gmail profile information (email address, message/thread totals, history id) for a user. | | `GMAIL_LIST_DRAFTS` | List drafts | Retrieves a paginated list of email drafts from a user's gmail account. use verbose=true to get full draft details including subject, body, sender, and timestamp. | | `GMAIL_LIST_LABELS` | List Gmail labels | Retrieves a list of all system and user-created labels for the specified gmail account. | | `GMAIL_LIST_THREADS` | List threads | Retrieves a list of email threads from a gmail account, identified by `user id` (email address or 'me'), supporting filtering and pagination. | | `GMAIL_MODIFY_THREAD_LABELS` | Modify thread labels | Adds or removes specified existing label ids from a gmail thread, affecting all its messages; ensure the thread id is valid. | | `GMAIL_MOVE_TO_TRASH` | Move to Trash | Moves an existing, non-deleted email message to the trash for the specified user. | | `GMAIL_PATCH_LABEL` | Patch Label | Patches the specified label. | | `GMAIL_REMOVE_LABEL` | Remove label | Permanently deletes a specific, existing user-created gmail label by its id for a user; cannot delete system labels. | | `GMAIL_REPLY_TO_THREAD` | Reply to email thread | Sends a reply within a specific gmail thread using the original thread's subject, requiring a valid `thread id` and correctly formatted email addresses. supports attachments via the `attachment` parameter with valid `s3key`, `mimetype`, and `name`. | | `GMAIL_SEARCH_PEOPLE` | Search People | Searches contacts by matching the query against names, nicknames, emails, phone numbers, and organizations, optionally including 'other contacts'. | | `GMAIL_SEND_DRAFT` | Send Draft | Sends the specified, existing draft to the recipients in the to, cc, and bcc headers. | | `GMAIL_SEND_EMAIL` | Send Email | Sends an email via gmail api using the authenticated user's google profile display name, requiring `is html=true` if the body contains html and valid `s3key`, `mimetype`, `name` for any attachment. | ## Supported Triggers | Trigger slug | Name | Description | |---|---|---| | `GMAIL_EMAIL_SENT_TRIGGER` | Email Sent | Triggers when a Gmail message is sent by the authenticated user. It polls the 'SENT' label and emits metadata including sender, recipients, subject, timestamp, and thread ID. | | `GMAIL_NEW_GMAIL_MESSAGE` | New Gmail Message Received Trigger | Triggers when a new message is received in Gmail. | ## Creating MCP Server - Stand-alone vs Composio SDK The Gmail MCP server is an implementation of the Model Context Protocol that connects your AI agent to Gmail. It provides structured and secure access so your agent can perform Gmail 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: - Python 3.9 or higher - A Composio account and API key - A Gmail connection authorized in Composio - An OpenAI API key for the CrewAI LLM - Basic familiarity with Python ### 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 dependencies **What's happening:** - composio connects your agent to Gmail via MCP - crewai provides Agent, Task, Crew, and LLM primitives - crewai-tools[mcp] includes MCP helpers - python-dotenv loads environment variables from .env ```bash pip install composio crewai crewai-tools[mcp] python-dotenv ``` ### 3. Set up environment variables Create a .env file in your project root. What's happening: - COMPOSIO_API_KEY authenticates with Composio - USER_ID scopes the session to your account - OPENAI_API_KEY lets CrewAI use your chosen OpenAI model ```bash COMPOSIO_API_KEY=your_composio_api_key_here USER_ID=your_user_id_here OPENAI_API_KEY=your_openai_api_key_here ``` ### 4. Import dependencies **What's happening:** - CrewAI classes define agents and tasks, and run the workflow - MCPServerHTTP connects the agent to an MCP endpoint - Composio will give you a short lived Gmail MCP URL ```python import os from composio import Composio from crewai import Agent, Task, Crew from crewai_tools import MCPServerAdapter import dotenv dotenv.load_dotenv() COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY") COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID") if not COMPOSIO_API_KEY: raise ValueError("COMPOSIO_API_KEY is not set") if not COMPOSIO_USER_ID: raise ValueError("COMPOSIO_USER_ID is not set") ``` ### 5. Create a Composio Tool Router session for Gmail **What's happening:** - You create a Gmail only session through Composio - Composio returns an MCP HTTP URL that exposes Gmail tools ```python composio_client = Composio(api_key=COMPOSIO_API_KEY) session = composio_client.create(user_id=COMPOSIO_USER_ID, toolkits=["gmail"]) url = session.mcp.url ``` ### 6. Initialize the MCP Server **What's Happening:** - Server Configuration: The code sets up connection parameters including the MCP server URL, streamable HTTP transport, and Composio API key authentication. - MCP Adapter Bridge: MCPServerAdapter acts as a context manager that converts Composio MCP tools into a CrewAI-compatible format. - Agent Setup: Creates a CrewAI Agent with a defined role (Search Assistant), goal (help with internet searches), and access to the MCP tools. - Configuration Options: The agent includes settings like verbose=False for clean output and max_iter=10 to prevent infinite loops. - Dynamic Tool Usage: Once created, the agent automatically accesses all Composio Search tools and decides when to use them based on user queries. ```python server_params = { "url": url, "transport": "streamable-http", "headers": {"x-api-key": COMPOSIO_API_KEY}, } with MCPServerAdapter(server_params) as tools: agent = Agent( role="Search Assistant", goal="Help users search the internet effectively", backstory="You are a helpful assistant with access to search tools.", tools=tools, verbose=False, max_iter=10, ) ``` ### 7. Create a CLI Chatloop and define the Crew **What's Happening:** - Interactive CLI Setup: The code creates an infinite loop that continuously prompts for user input and maintains the entire conversation history in a string variable. - Input Validation: Empty inputs are ignored to prevent processing blank messages and keep the conversation clean. - Context Building: Each user message is appended to the conversation context, which preserves the full dialogue history for better agent responses. - Dynamic Task Creation: For every user input, a new Task is created that includes both the full conversation history and the current request as context. - Crew Execution: A Crew is instantiated with the agent and task, then kicked off to process the request and generate a response. - Response Management: The agent's response is converted to a string, added to the conversation context, and displayed to the user, maintaining conversational continuity. ```python print("Chat started! Type 'exit' or 'quit' to end.\n") conversation_context = "" while True: user_input = input("You: ").strip() if user_input.lower() in ["exit", "quit", "bye"]: print("\nGoodbye!") break if not user_input: continue conversation_context += f"\nUser: {user_input}\n" print("\nAgent is thinking...\n") task = Task( description=( f"Conversation history:\n{conversation_context}\n\n" f"Current request: {user_input}" ), expected_output="A helpful response addressing the user's request", agent=agent, ) crew = Crew(agents=[agent], tasks=[task], verbose=False) result = crew.kickoff() response = str(result) conversation_context += f"Agent: {response}\n" print(f"Agent: {response}\n") ``` ## Complete Code ```python from crewai import Agent, Task, Crew, LLM from crewai_tools import MCPServerAdapter from composio import Composio from dotenv import load_dotenv import os load_dotenv() GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY") COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY") COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID") if not GOOGLE_API_KEY: raise ValueError("GOOGLE_API_KEY is not set in the environment.") if not COMPOSIO_API_KEY: raise ValueError("COMPOSIO_API_KEY is not set in the environment.") if not COMPOSIO_USER_ID: raise ValueError("COMPOSIO_USER_ID is not set in the environment.") # Initialize Composio and create a session composio = Composio(api_key=COMPOSIO_API_KEY) session = composio.create( user_id=COMPOSIO_USER_ID, toolkits=["gmail"], ) url = session.mcp.url # Configure LLM llm = LLM( model="gpt-5", api_key=os.getenv("OPENAI_API_KEY"), ) server_params = { "url": url, "transport": "streamable-http", "headers": {"x-api-key": COMPOSIO_API_KEY}, } with MCPServerAdapter(server_params) as tools: agent = Agent( role="Search Assistant", goal="Help users with internet searches", backstory="You are an expert assistant with access to Composio Search tools.", tools=tools, llm=llm, verbose=False, max_iter=10, ) print("Chat started! Type 'exit' or 'quit' to end.\n") conversation_context = "" while True: user_input = input("You: ").strip() if user_input.lower() in ["exit", "quit", "bye"]: print("\nGoodbye!") break if not user_input: continue conversation_context += f"\nUser: {user_input}\n" print("\nAgent is thinking...\n") task = Task( description=( f"Conversation history:\n{conversation_context}\n\n" f"Current request: {user_input}" ), expected_output="A helpful response addressing the user's request", agent=agent, ) crew = Crew(agents=[agent], tasks=[task], verbose=False) result = crew.kickoff() response = str(result) conversation_context += f"Agent: {response}\n" print(f"Agent: {response}\n") ``` ## Conclusion You now have a CrewAI agent connected to Gmail through Composio's Tool Router. The agent can perform Gmail operations through natural language commands. Next steps: - Add role-specific instructions to customize agent behavior - Plug in more toolkits for multi-app workflows - Chain tasks for complex multi-step operations ## How to build Gmail MCP Agent with another framework - [ChatGPT](https://composio.dev/toolkits/gmail/framework/chatgpt) - [OpenAI Agents SDK](https://composio.dev/toolkits/gmail/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/gmail/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/gmail/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/gmail/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/gmail/framework/codex) - [Cursor](https://composio.dev/toolkits/gmail/framework/cursor) - [VS Code](https://composio.dev/toolkits/gmail/framework/vscode) - [OpenCode](https://composio.dev/toolkits/gmail/framework/opencode) - [OpenClaw](https://composio.dev/toolkits/gmail/framework/openclaw) - [Hermes](https://composio.dev/toolkits/gmail/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/gmail/framework/cli) - [Google ADK](https://composio.dev/toolkits/gmail/framework/google-adk) - [LangChain](https://composio.dev/toolkits/gmail/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/gmail/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/gmail/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/gmail/framework/llama-index) ## Related Toolkits - [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. - [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. - [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. - [Microsoft teams](https://composio.dev/toolkits/microsoft_teams) - Microsoft Teams is a collaboration platform that combines chat, meetings, and file sharing within Microsoft 365. It keeps distributed teams connected and productive through seamless virtual communication. - [Slackbot](https://composio.dev/toolkits/slackbot) - Slackbot is a conversational automation tool for Slack that handles reminders, notifications, and automated responses. It boosts team productivity by streamlining onboarding, answering FAQs, and managing timely alerts—all right inside Slack. - [2chat](https://composio.dev/toolkits/_2chat) - 2chat is an API platform for WhatsApp and multichannel text messaging. It streamlines chat automation, group management, and real-time messaging for developers. - [Agent mail](https://composio.dev/toolkits/agent_mail) - Agent mail provides AI agents with dedicated email inboxes for sending, receiving, and managing emails. It empowers agents to communicate autonomously with people, services, and other agents—no human intervention needed. - [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place. - [Chatwork](https://composio.dev/toolkits/chatwork) - Chatwork is a team communication platform with group chats, file sharing, and task management. It helps businesses boost collaboration and streamline productivity. - [Clickmeeting](https://composio.dev/toolkits/clickmeeting) - ClickMeeting is a cloud-based platform for running online meetings and webinars. It helps businesses and individuals host, manage, and engage virtual audiences with ease. - [Confluence](https://composio.dev/toolkits/confluence) - Confluence is Atlassian's team collaboration and knowledge management platform. It helps your team organize, share, and update documents and project content in one secure workspace. - [Dailybot](https://composio.dev/toolkits/dailybot) - DailyBot streamlines team collaboration with chat-based standups, reminders, and polls. It keeps work flowing smoothly in your favorite messaging platforms. - [Dialmycalls](https://composio.dev/toolkits/dialmycalls) - Dialmycalls is a mass notification service for sending voice and text messages to contacts. It helps teams and organizations quickly broadcast urgent alerts and updates. - [Dialpad](https://composio.dev/toolkits/dialpad) - Dialpad is a cloud-based business phone and contact center system for teams. It unifies voice, video, messaging, and meetings across your devices. - [Discord](https://composio.dev/toolkits/discord) - Discord is a real-time messaging and VoIP platform for communities and teams. It lets users chat, share media, and collaborate across public and private channels. - [Discordbot](https://composio.dev/toolkits/discordbot) - Discordbot is an automation tool for Discord servers that handles moderation, messaging, and user engagement. It helps communities run smoothly by automating routine and complex tasks. - [Echtpost](https://composio.dev/toolkits/echtpost) - Echtpost is a secure digital communication platform for encrypted document and message exchange. It ensures confidential data stays private and protected during transmission. - [Egnyte](https://composio.dev/toolkits/egnyte) - Egnyte is a cloud-based platform for secure file sharing, storage, and governance. It helps teams collaborate efficiently while maintaining data compliance and security. - [Google Meet](https://composio.dev/toolkits/googlemeet) - Google Meet is a secure video conferencing platform for virtual meetings, chat, and screen sharing. It helps teams connect, collaborate, and communicate seamlessly from anywhere. - [Heartbeat](https://composio.dev/toolkits/heartbeat) - Heartbeat is a plug-and-play platform for building and managing online communities. It helps you organize users, channels, events, and discussions in one place. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Gmail MCP? With a standalone Gmail MCP server, the agents and LLMs can only access a fixed set of Gmail tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Gmail and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with CrewAI? Yes, you can. CrewAI 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 Gmail tools. ### Can I manage the permissions and scopes for Gmail while using Tool Router? Yes, absolutely. You can configure which Gmail 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 Gmail data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)