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yagms MCP Server

@acro5piano

Repository

Basic information

Category

Other

License

MIT

Transports

stdio

Author

acro5piano

About yagms MCP Server

Yet Another Gmail MCP Server

#gmail#mcp#server

yagms MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "yagms": {
      "command": "bun",
      "args": [
        "run",
        "build-gmail",
        "#",
        "It",
        "will",
        "emit",
        "./dist/gmail.js"
      ]
    }
  }
}

yagms MCP Server tools

3

`senderEmail` (optional): Filter by sender email

`emailId`: The ID of the email to retrieve

`query`: Gmail search query (e.g., "from:example@gmail.com has:attachment")

Overview

What is yagms?

yagms is a Gmail MCP server that provides tools to interact with your Gmail account through the Model Context Protocol (MCP). It is built with Bun and allows AI assistants to read, search, and manage Gmail data.

How to use yagms?

First, create OAuth credentials in Google Cloud Console and save them as ~/.yagms-oauth.keys.json. Then build the project with bun install and bun run build-gmail. Run bun run dist/gmail.js auth to authenticate, then start the server with bun run src/gmail.ts. Configure MCP to point to the built dist/gmail.js file.

Key features of yagms

  • List emails with optional sender, max results, and label filters
  • Retrieve a specific email by its ID
  • Search emails using Gmail search syntax (e.g., from:example@gmail.com has:attachment)
  • Get all Gmail labels from your account
  • Customizable OAuth and credentials file paths via environment variables

Use cases of yagms

  • Automatically fetch recent emails from a specific sender
  • Summarize the content of an important email by its ID
  • Search for emails with attachments or from a particular domain
  • Retrieve all Gmail labels for organization or filtering purposes
  • Integrate email reading capabilities into an AI assistant workflow

Frequently asked questions

1

What dependencies does yagms require?

yagms requires [Bun](https://bun.sh) to build and run, and a Google Cloud project with the Gmail API enabled and OAuth 2.0 credentials.

2

How do I authenticate with my Gmail account?

Run `bun run dist/gmail.js auth` which opens a browser for Google sign-in and saves credentials to `~/.yagms-credentials.json`. You can customize the paths with `GMAIL_OAUTH_PATH` and `GMAIL_CREDENTIALS_PATH`.

3

Where are authentication files stored?

OAuth keys default to `~/.yagms-oauth.keys.json` and credentials default to `~/.yagms-credentials.json`. Both paths are configurable via environment variables.

4

Does yagms support any transport besides stdio?

The README only shows a command-line MCP configuration using `bun` runtime; it does not mention HTTP or other transports. The server is designed for local stdio-based MCP communication.

5

What are the available tools?

yagms provides four tools: `list-emails`, `get-email`, `search-emails`, and `get-labels`. Each has documented parameters as shown in the README.

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