How to connect Gmail to Muse

Connect Muse to Gmail MCP. Summarize unread emails from this morning, create draft replies to urgent messages, and more using natural language, with authentication handled for you.

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Gmail

Oauth2

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.

61 Tools2 Triggers

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Introduction

Muse is Meta's AI assistant. It can connect to outside tools through custom connectors, which use the Model Context Protocol (MCP).

This guide explains how to connect Gmail to Muse using Composio Connect, which handles OAuth, token refresh, and reliability so you do not have to. You add Composio as a custom connector once, then ask Muse to work with Gmail in plain language.

Why use Composio?

Cross-app workflows across 1,500+ apps from a single plugin layer.
On-demand tool loading so Muse only loads the tools needed for the current task.
Programmatic tool calling through a remote workbench for complex, multi-step workflows.
Multi-account support so users can connect and switch between multiple accounts for the same app.
Shared account access so teams or agents can work through common business accounts and service connections.
Managed authentication with OAuth handling, credential storage, and token refresh managed by Composio.
Safer credential handling so app credentials stay outside the model context and tool responses.
User-level account isolation so actions run against the correct connected account instead of mixing user access.

Connecting Gmail to Muse

You add Composio to Muse once as a custom connector, then connect Gmail from the chat.

1. Ask Muse to connect to Composio

Start a new Muse chat and send this message. Muse builds the connector and shows a button to add your API key.

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Create a Custom Connector for the Composio remote MCP server and connect to it:
- Name: Composio
- Transport: remote streamable HTTP
- URL: https://connect.composio.dev/mcp
- Auth: API key sent in the x-consumer-api-key header
Open the secure credentials store so I can enter the API key there, not in this chat. Then list its tools to confirm the connection works.

2. Copy your API key

Open the Muse page in your Composio dashboard and copy your API key. It starts with ck_.

Don't paste it into the chat. It goes in Muse's secure credentials store in the next step.

3. Add your API key in the secure credentials store

Tap the button Muse shows to open Add custom connector, paste your API key, then tap Add. Muse lists the Composio tools once it connects.

Muse secure credentials store with the connect.composio.dev URL, an API Key field, and the Add button

4. Connect your Gmail account

Back in the chat, ask Muse to connect to Gmail or give it any Gmail task.

For example, ask it to:

"Summarize unread emails from this morning"
"Create draft replies to urgent messages"
"Fetch contact details for recent senders"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Muse, and your Gmail account is ready to use.

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, drafts, attachments, labels, and contacts, so your agent can read messages, send emails, manage drafts, organize your inbox, and handle conversations on your behalf.

Email search and reading: Instruct your agent to find emails using filters, read complete messages, and retrieve specific attachments.
Drafting and sending: Have your agent create, update, review, send, or delete drafts, and send new emails from your Gmail account.
Replies and conversation management: Let the agent reply within existing email threads and move conversations to or from the trash.
Inbox and label organization: Direct your agent to modify labels across multiple messages and update the properties of existing Gmail labels.
Contact and account lookup: Have your agent search contacts by personal or workplace details and identify the connected Gmail account.

Way Forward

Now that Gmail is connected, extend your setup by connecting the other apps you already use every day, so Muse can run true cross-app workflows end to end.

Connect Calendar to turn threads into scheduled meetings automatically.
Connect Slack or Teams to post summaries, approvals, and alerts where your team works.
Connect Notion, Linear, Jira, or Asana to convert requests into tickets, tasks, and docs.
Connect Drive, Dropbox, or OneDrive to fetch, file, and share attachments without manual steps.

Start with one workflow you do repeatedly, then keep adding apps as you find new handoffs. With everything behind a single connection, Muse can coordinate multiple tools safely and reliably in one conversation.

Troubleshooting

1. Why doesn't Muse show a button to add my API key?

Muse shows the button only when you ask it to open the secure credentials store.

Start a new chat.
Send the message from step 1 exactly as written.
If Muse asks for the key in the chat, do not paste it. Ask Muse to open the secure credentials store.

2. Why does the Composio connection fail after I add my API key?

The key or the connector settings are not correct.

Copy the full key from the Composio dashboard. It starts with ck_.
Make sure the URL is https://connect.composio.dev/mcp and the header is x-consumer-api-key.
Remove the Composio connector in Muse settings, then do steps 1 to 3 again.

3. Why doesn't Muse use the Composio tools for Gmail?

Muse may not pick the Composio connector for the request.

Ask Muse to list its Composio tools.
Name Composio and Gmail in your request, for example: Use Composio to connect to Gmail.
If it still does not work, start a new chat and try again.

4. Why does Muse ask me to connect Gmail again?

Your Gmail connection expired or was removed.

Open the link Muse gives you and sign in to Gmail again.
Check that the Gmail connection shows as ACTIVE in the Composio dashboard.

5. What do I do if I pasted my API key into the chat?

Treat the key as exposed.

Create a new API key in the Composio dashboard and delete the old one.
Add the new key in Muse's secure credentials store, not in the chat.

TOOLS & TRIGGERS

Supported Tools and Triggers

Every Gmail action and event your agent gets out of the box.

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).

Batch delete Gmail messages

Tool to permanently delete multiple Gmail messages in bulk, bypassing Trash with no recovery possible.

Batch modify Gmail messages

Modify labels on multiple Gmail messages in one efficient API call.

Create email draft

Creates a Gmail email draft.

Create Gmail filter

Tool to create a new Gmail filter with specified criteria and actions.

Create label

Creates a new label with a unique name in the specified user's Gmail account.

Create Prompt Post

Send a one-shot prompt to the Sanity Content Agent.

Delete Draft

Permanently deletes a specific Gmail draft using its ID with no recovery possible; verify the correct `draft_id` and obtain explicit user confirmation before calling.

Delete Gmail filter

Tool to permanently delete a Gmail filter by its ID.

Delete label from account (permanent)

Permanently DELETES a user-created Gmail label from the account (not from a 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.

Delete thread

Tool to immediately and permanently delete a specified thread and all its messages.

Fetch emails

Fetches a list of email messages from a Gmail account, supporting filtering, pagination, and optional full content retrieval.

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`.

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`.

Forward email message

Forward an existing Gmail message to specified recipients, preserving original body and attachments.

Get Gmail attachment

Retrieves a specific attachment by ID from a message in a user's Gmail mailbox, requiring valid message and attachment IDs.

Get Auto-Forwarding Settings

Tool to get the auto-forwarding setting for the specified account.

Get contacts

Fetches contacts (connections) for the authenticated Google account, allowing selection of specific data fields and pagination.

Get Draft

Retrieves a single Gmail draft by its ID.

Get Gmail filter

Tool to retrieve a specific Gmail filter by its ID.

Get label details

Gets details for a specified Gmail label.

Get Language Settings

Tool to retrieve the language settings for a Gmail user.

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.

Get Profile

Retrieves Gmail profile information (email address, aggregate messagesTotal/threadsTotal, historyId) for a user.

Get Vacation Settings

Tool to retrieve vacation responder settings for a Gmail user.

Import message

Tool to import a message into the user's mailbox with standard email delivery scanning and classification.

Insert message into mailbox

Tool to insert a message into the user's mailbox similar to IMAP APPEND.

List CSE identities

Tool to list client-side encrypted identities for an authenticated user.

List CSE key pairs

Tool to list client-side encryption key pairs for an authenticated user.

List Drafts

Retrieves a paginated list of email drafts from a user's Gmail account.

List Gmail filters

Tool to list all Gmail filters (rules) in the mailbox.

List forwarding addresses

Tool to list all forwarding addresses for the specified Gmail account.

List Gmail history

Tool to list Gmail mailbox change history since a known startHistoryId.

List Gmail labels

Retrieves all system and user-created labels for a Gmail account in a single unpaginated response.

List send-as aliases

Lists the send-as aliases for a Gmail account, including the primary address and custom 'from' aliases.

List S/MIME configs

Lists S/MIME configs for the specified send-as alias.

List threads

Retrieves a list of email threads from a Gmail account, identified by `user_id` (email address or 'me'), supporting filtering and pagination.

Modify thread labels

Adds or removes specified existing label IDs from a Gmail thread, affecting all its messages; ensure the thread ID is valid.

Trash thread

Moves the specified thread to the trash.

Move to Trash

Moves an existing, non-deleted email message to the trash for the specified user.

Patch Label

Patches the specified user-created label.

Patch send-as alias

Tool to patch the specified send-as alias for a Gmail user.

Reply to email thread

Sends a reply within a specific Gmail thread using the original thread's subject; do not provide a custom subject as it will start a new conversation instead of replying in-thread.

Search People

Searches contacts by matching the query against names, nicknames, emails, phone numbers, and organizations, optionally including 'Other Contacts'.

Send Draft

Sends an existing draft email AS-IS to recipients already defined within the draft.

Send Email

Sends an email via Gmail API using the authenticated user's Google profile display name.

Get IMAP Settings

Retrieves the IMAP settings for a Gmail user account, including whether IMAP is enabled, auto-expunge behavior, expunge behavior, and maximum folder size.

Get POP settings

Tool to retrieve POP settings for a Gmail account.

Get send-as alias

Tool to retrieve a specific send-as alias configuration for a Gmail user.

Stop watch notifications

Tool to stop receiving push notifications for a Gmail mailbox.

Untrash Message

Tool to remove a message from trash in Gmail.

Untrash thread

Tool to remove a thread from trash in Gmail.

Update draft

Updates (replaces) an existing Gmail draft's content in-place by draft ID.

Update IMAP settings

Tool to update IMAP settings for a Gmail account.

Update Label

Tool to update the properties of an existing Gmail label.

Update Language Settings

Tool to update the language settings for a Gmail user.

Update POP settings

Tool to update POP settings for a Gmail account.

Update send-as alias

Tool to update a send-as alias for a Gmail user.

Update User Attributes Values

Update user attribute values for a resource.

Update Vacation Settings

Tool to update vacation responder settings for a Gmail user.

FRAMEWORKS

How to build Gmail MCP Agent with another framework

Claude Code

Use Gmail MCP with Claude Code

Cursor

Use Gmail MCP with Cursor

ChatGPT

Use Gmail MCP with ChatGPT

Claude Cowork

Use Gmail MCP with Claude Cowork

Antigravity

Use Gmail MCP with Antigravity

OpenAI Agents SDK

Use Gmail MCP with OpenAI Agents SDK

Claude Agent SDK

Use Gmail MCP with Claude Agent SDK

Grok Bot

Use Gmail MCP with Grok Bot

Codex

Use Gmail MCP with Codex

Kimi Code

Use Gmail MCP with Kimi Code

Grok Build

Use Gmail MCP with Grok Build

VS Code

Use Gmail MCP with VS Code

OpenCode

Use Gmail MCP with OpenCode

OpenClaw

Use Gmail MCP with OpenClaw

Hermes

Use Gmail MCP with Hermes

Atomic Agent

Use Gmail MCP with Atomic Agent

Pi

Use Gmail MCP with Pi

DeepSeek Harness

Use Gmail MCP with DeepSeek Harness

CLI

Use Gmail MCP with CLI

Google ADK

Use Gmail MCP with Google ADK

LangChain

Use Gmail MCP with LangChain

Vercel AI SDK

Use Gmail MCP with Vercel AI SDK

Mastra AI

Use Gmail MCP with Mastra AI

LlamaIndex

Use Gmail MCP with LlamaIndex

CrewAI

Use Gmail MCP with CrewAI

Pydantic AI

Use Gmail MCP with Pydantic AI

AutoGen

Use Gmail MCP with AutoGen

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Microsoft teams

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FAQ

Frequently asked questions

Yes. Muse supports custom connectors that use the Model Context Protocol (MCP). Composio connects as one custom connector over remote streamable HTTP at https://connect.composio.dev/mcp, and gives Muse access to Gmail and 1,500+ other apps.

Copy it from the Composio dashboard. It starts with ck_. Enter it only in Muse's secure credentials store, never in the chat.

Yes. Composio supports multiple connected accounts for the same app. Give each Gmail connection a name, such as work or personal, and tell Muse which one to use.

Tokens, keys, and configuration are encrypted at rest and in transit. Your Composio API key stays in Muse's secure credentials store, not in the chat or the model context. Composio is SOC 2 Type 2 compliant.

Start with Gmail.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Gmail tool your agent needs.Free to start.

Start building

How to connect Gmail to Muse

Connect Gmail without auth hassles

Introduction

Also integrate Gmail with

Why use Composio?

Connecting Gmail to Muse

1. Ask Muse to connect to Composio

2. Copy your API key

3. Add your API key in the secure credentials store

4. Connect your Gmail account

What is the Gmail MCP server, and what's possible with it?

Way Forward

Troubleshooting

1. Why doesn't Muse show a button to add my API key?

2. Why does the Composio connection fail after I add my API key?

3. Why doesn't Muse use the Composio tools for Gmail?

4. Why does Muse ask me to connect Gmail again?

5. What do I do if I pasted my API key into the chat?

Supported Tools and Triggers

How to build Gmail MCP Agent with another framework

Claude Code

Cursor

ChatGPT

Claude Cowork

Antigravity

OpenAI Agents SDK

Claude Agent SDK

Grok Bot

Codex

Kimi Code

Grok Build

VS Code

OpenCode

OpenClaw

Hermes

Atomic Agent

Pi

DeepSeek Harness

CLI

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Pydantic AI

AutoGen

Explore Other Toolkits

Outlook

Slack

Gong

Microsoft teams

Frequently asked questions

Does Muse support MCP?+

Where do I get the API key for the Composio connector?+

Can I connect more than one Gmail account to Muse?+

How safe is my Gmail data with Composio?+

Start with Gmail.It takes 30 seconds.