mcp-google-reader

MCP server that reads Google Docs and Google Sheets content for AI assistants like Claude.

Paste a Google Docs/Sheets link in your message — Claude reads it directly. No more copy-pasting PRDs, tech specs, or test case spreadsheets.

Prerequisites

• Node.js 18+ (recommended: Node.js 20 or 22 LTS)
• A Google Cloud project with Docs & Sheets APIs enabled

Quick Start

# 1. Set up Google Cloud OAuth (see detailed steps below)
# 2. Authorize (run in your terminal, not inside an AI assistant)
npx mcp-google-reader auth
# 3. Add to your MCP client
claude mcp add -s user google-reader -- npx mcp-google-reader serve

Features

• Google Docs → Markdown: Preserves headings, bold, italic, lists, tables, links
• Google Sheets → Markdown table: First row as header, proper column alignment
• Multiple URLs: Paste several links in one message — all fetched in parallel
• Sheet selection: Read specific tabs by name, or all tabs at once
• Caching: 60-second in-memory cache to avoid redundant API calls
• OAuth2: Reads any file you have access to in your Google account

Setup

1. Google Cloud Project

1. Go to Google Cloud Console → Create a new project (or select existing)
2. Enable Google Docs API: Enable here
3. Enable Google Sheets API: Enable here

2. OAuth Consent Screen

1. Go to APIs & Services → OAuth consent screen
2. Choose External → Create
3. Fill in:
   • App name: mcp-google-reader
   • User support email: your email
   • Developer contact: your email
4. Scopes → Save and Continue (no changes needed)
5. Test users → Add users → add your Google email → Save and Continue
6. Summary → Back to Dashboard
7. Keep in Testing mode (sufficient for personal use and small teams)

3. Create OAuth Client ID

1. Go to APIs & Services → Credentials
2. Create Credentials → OAuth client ID
3. Application type: Desktop app
4. Name: mcp-google-reader
5. Click Create
6. Copy the Client ID and Client Secret

4. Authorize

Important: Run this command in your terminal directly — not inside an AI assistant. The auth flow requires interactive input and opening a browser.

npx mcp-google-reader auth

This will:

1. Ask for your Client ID and Client Secret (first time only)
2. Print an authorization URL — copy and open it in your browser
3. Sign in with your Google account and click Allow
4. Browser redirects to localhost — tokens are saved automatically

Credentials stored at ~/.mcp-google-reader/

npx automatically downloads the package on first run — no npm install -g needed.

Windows troubleshooting: If you get sed: command not found errors, try one of these:

# Option 1: Run in Command Prompt (cmd) instead of PowerShell
cmd /c "npx mcp-google-reader auth"

# Option 2: Install globally first
npm install -g mcp-google-reader
mcp-google-reader auth

5. Add to your MCP client

Claude Code (CLI)

# Add globally (available in all projects)
claude mcp add -s user google-reader -- npx mcp-google-reader serve

# Or add to current project only
claude mcp add google-reader -- npx mcp-google-reader serve

Then restart Claude Code to load the MCP server.

Cursor / Windsurf / VS Code

Create a .mcp.json file in your project root (or copy from .mcp-example.json):

{
  "mcpServers": {
    "google-reader": {
      "command": "npx",
      "args": ["mcp-google-reader", "serve"]
    }
  }
}

Then restart your editor.

Claude Desktop

Add to your Claude Desktop config (claude_desktop_config.json):

{
  "mcpServers": {
    "google-reader": {
      "command": "npx",
      "args": ["mcp-google-reader", "serve"]
    }
  }
}

Config file location:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Usage

Just paste Google links in your message:

Read this PRD and implement the feature:
https://docs.google.com/document/d/1abc123.../edit

Test cases are here:
https://docs.google.com/spreadsheets/d/1xyz789.../edit

Claude will automatically call read_google_links and get the content.

Multiple links in one message are supported:

Here are the PRD https://docs.google.com/document/d/abc and test cases https://docs.google.com/spreadsheets/d/xyz — please review both.

Tools

read_google_links

Extract and read all Google Docs/Sheets URLs from a message.

Parameter	Type	Required	Description
message	string	Yes	Message containing one or more Google URLs

read_google_sheet

Read a specific Google Sheet with fine-grained options.

Parameter	Type	Required	Description
url	string	Yes	Google Sheets URL
sheet_name	string	No	Tab name (default: first tab)
range	string	No	Cell range, e.g. A1:Z100
all_sheets	boolean	No	Read all tabs

Credentials

~/.mcp-google-reader/
├── oauth-config.json    # Client ID & Secret (created during auth)
└── credentials.json     # Access & refresh tokens (auto-managed)

Security

• Credentials stored with 600 file permissions (owner read/write only)
• Tokens auto-refresh — no need to re-authorize
• Read-only scopes: documents.readonly and spreadsheets.readonly
• No data sent anywhere except Google APIs

License

MIT