Google Workspace MCP Server

This repository contains a Model Context Protocol (MCP) server that integrates with Google Workspace to automatically create Google Docs and draft emails in Gmail.

The server is built using Python, Starlette, and Server-Sent Events (SSE) to allow AI agents (such as custom Orchestrators or Claude Desktop) to connect remotely and execute tools securely.

Prerequisites

• Python 3.10+
• A Google Cloud Platform (GCP) project with the following APIs enabled:
  • Google Docs API
  • Google Drive API
  • Gmail API
• An OAuth 2.0 Client ID (Desktop App) from the GCP Console, saved as credentials.json.

Quick Start (Local Setup)

1. Clone this repository.
2. Create a virtual environment and install dependencies:

   python -m venv venv
   source venv/bin/activate  # Or .\venv\Scripts\activate on Windows
   pip install -r requirements.txt
   

3. Copy .env.example to .env and configure your settings.
4. Place your downloaded credentials.json in the root folder.
5. Generate the token.json locally by running:

   python generate_token.py
   

   Follow the link provided in the console to log in to Google and authorize the application.
6. Run the server locally:

   python src/main.py
   

   The server will start on http://0.0.0.0:8000. Your SSE endpoint will be available at http://localhost:8000/sse.

Deploying to Railway

This server is configured to run effortlessly on Railway.

Because Railway containers are ephemeral (their file systems reset on every deployment), you must securely provide your token.json so the server remains authenticated with Google.

Deployment Steps:

1. Push to GitHub: Push this repository to your GitHub account.
2. Create Railway Project: Log into Railway, click "New Project", and deploy from your GitHub repo.
3. Environment Variables: Add the variables from your .env file into the Railway dashboard.
4. Persistent Volume (Important):
   • Go to your Railway service settings.
   • Attach a new Volume to the service.
   • Mount the volume at a path like /data.
   • Update your Railway environment variable TOKEN_PATH to /data/token.json.
5. Upload the Token:
   • Railway doesn't easily allow direct file uploads to volumes. Instead, you can encode your token.json as a base64 string, store it in an environment variable, and update your startup command in Railway to decode it into the volume before starting the server.
   • Alternatively, you can use a database for token storage in the future.

Tools Provided

• create_doc(title: string, content: string): Creates a Google Doc and inserts the given markdown/text.
• draft_email(to: string[], subject: string, body: string): Drafts an email securely in the authenticated user's outbox.