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tomohiro-owada/google-workspace-mcp

Google Workspace MCP

English | 日本語

A Model Context Protocol (MCP) server that connects AI assistants to Google Workspace APIs.


English

Features

  • Google Calendar - Create, update, delete events, find free time
  • Gmail - Search, read, send emails, manage labels
  • Google Drive - Search files, create folders, download files
  • Google Docs - Create, read, edit documents with Markdown support
  • Google Sheets - Read spreadsheet data in multiple formats
  • Google Slides - Read presentation content
  • Google Chat - Send messages, manage spaces
  • People API - Get user profiles and relations

Installation

Download Binary

Download the latest binary from Releases:

Platform Architecture Download
macOS Apple Silicon (M1/M2/M3) workspace-server-darwin-arm64
macOS Intel workspace-server-darwin-amd64
Linux x86_64 workspace-server-linux-amd64
Linux ARM64 workspace-server-linux-arm64
Windows x86_64 workspace-server-windows-amd64.exe
# Example: macOS Apple Silicon
curl -L -o workspace-server https://github.com/tomohiro-owada/google-workspace-mcp/releases/latest/download/workspace-server-darwin-arm64
chmod +x workspace-server
sudo mv workspace-server /usr/local/bin/

Build from Source

git clone https://github.com/tomohiro-owada/google-workspace-mcp.git
cd google-workspace-mcp
go build -o workspace-server ./cmd/workspace-server/

Configuration

Claude Code

Add to ~/.claude.json:

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server"
    }
  }
}

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS):

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server"
    }
  }
}

Authentication

This server uses OAuth 2.0 for Google authentication. On first use, you need to authenticate:

# Check auth status
auth.status

# Login (opens browser)
auth.login

# Clear credentials
auth.clear

Access Modes

This server supports two access modes:

Mode Permissions Setup Required
Basic Read-only None (default)
Full Access Read + Write + Delete Custom OAuth credentials

Basic Mode (Default)

Works out of the box with read-only permissions. No additional setup required.

Full Access Mode

To enable write operations (send emails, create documents, etc.), you need to set up your own OAuth credentials.

Setup Instructions
1. Create a Google Cloud Project
  1. Go to Google Cloud Console
  2. Create a new project (e.g., workspace-mcp)
  3. Enable the following APIs:
    • Google Calendar API
    • Gmail API
    • Google Drive API
    • Google Docs API
    • Google Sheets API
    • Google Slides API
    • Google Chat API
    • People API
2. Configure OAuth Consent Screen
  1. Go to APIs & Services > OAuth consent screen
  2. Choose User Type:
    • Internal: For Google Workspace organizations (all members can use)
    • External: For personal Gmail accounts (requires adding test users or Google verification)
  3. Fill in the required fields (App name, User support email, Developer contact)
  4. Add scopes (or skip - they'll be requested at runtime)
  5. If External: Add test users (your Gmail address)
3. Create OAuth Credentials
  1. Go to APIs & Services > Credentials
  2. Click Create Credentials > OAuth client ID
  3. Select Desktop app
  4. Download or copy the Client ID and Client Secret
4. Configure the MCP Server

Add environment variables to your MCP configuration:

Claude Code (~/.claude.json):

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server",
      "env": {
        "GOOGLE_CLIENT_ID": "your-client-id.apps.googleusercontent.com",
        "GOOGLE_CLIENT_SECRET": "your-client-secret"
      }
    }
  }
}

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server",
      "env": {
        "GOOGLE_CLIENT_ID": "your-client-id.apps.googleusercontent.com",
        "GOOGLE_CLIENT_SECRET": "your-client-secret"
      }
    }
  }
}
5. Re-authenticate

After configuration, restart the MCP server and run auth.login again.

Available Tools

Auth Tools
Tool Description
auth.login Initiate Google OAuth login
auth.status Check authentication status
auth.clear Clear stored credentials
auth.refreshToken Manually refresh token
Calendar Tools
Tool Description
calendar.list List all calendars
calendar.listEvents List events in a time range
calendar.getEvent Get event details
calendar.createEvent Create a new event
calendar.updateEvent Update an existing event
calendar.deleteEvent Delete an event
calendar.respondToEvent Accept/decline/tentative
calendar.findFreeTime Find available time slots
Gmail Tools
Tool Description
gmail.search Search emails
gmail.get Get email content
gmail.send Send an email
gmail.sendWithAttachments Send with file attachments
gmail.createDraft Create a draft
gmail.sendDraft Send a draft
gmail.modify Add/remove labels
gmail.listLabels List all labels
gmail.createLabel Create a label
gmail.deleteLabel Delete a label
gmail.downloadAttachment Download attachment
gmail.trashMessage Move to trash
gmail.untrashMessage Restore from trash
gmail.getVacationSettings Get vacation settings
gmail.setVacationSettings Set vacation auto-reply
Drive Tools
Tool Description
drive.search Search files and folders
drive.findFolder Find folder by name
drive.createFolder Create a new folder
drive.downloadFile Download a file
drive.uploadFile Upload a local file
drive.copyFile Copy a file
drive.moveFile Move a file to folder
drive.deleteFile Trash or permanently delete
drive.getFileInfo Get detailed file info
drive.shareFile Share with user or public
drive.removeShare Remove sharing permission
drive.listTrash List files in trash
drive.restoreFile Restore from trash
drive.emptyTrash Empty trash
Docs Tools
Tool Description
docs.create Create a new document
docs.getText Get document content
docs.insertText Insert text at beginning
docs.appendText Append text at end
docs.replaceText Find and replace text
docs.move Move document to folder
docs.find Search documents by title
docs.extractIdFromUrl Extract ID from URL
Sheets Tools
Tool Description
sheets.getText Get sheet content (text/csv/json)
sheets.getRange Get values from range
sheets.getMetadata Get spreadsheet metadata
sheets.find Search spreadsheets by title
sheets.create Create a new spreadsheet
sheets.updateRange Update values in range
sheets.appendRows Append rows to sheet
sheets.clearRange Clear values in range
sheets.createSheet Create new sheet tab
sheets.deleteSheet Delete sheet tab
Slides Tools
Tool Description
slides.getText Get presentation text
slides.getMetadata Get presentation metadata
slides.find Search presentations by title
slides.create Create new presentation
slides.addSlide Add a new slide
slides.deleteSlide Delete a slide
slides.addTextBox Add text box to slide
slides.addImage Add image to slide
slides.updateText Update text in shape
Chat Tools
Tool Description
chat.listSpaces List all spaces
chat.findSpaceByName Find space by name
chat.findDmByEmail Find DM by email
chat.getMessages Get messages from space
chat.listThreads List threads in space
chat.sendMessage Send message to space
chat.sendDm Send direct message
chat.setUpSpace Create a new space
People Tools
Tool Description
people.getMe Get authenticated user profile
people.getUserProfile Get user profile by email
people.getUserRelations Get user relations
Time Tools
Tool Description
time.getCurrentTime Get current time
time.getCurrentDate Get current date
time.getTimeZone Get timezone info

Security

This server grants AI assistants access to read, modify, and delete your Google Workspace data. Use with caution:

  • Review actions taken by AI assistants
  • Don't process untrusted content (emails, documents from unknown sources)
  • Credentials are stored securely using system keychain

License

Apache License 2.0


日本語

概要

Google Workspace MCP は、AIアシスタント(Claude Code、Claude Desktop など)を Google Workspace API に接続する Model Context Protocol (MCP) サーバーです。

機能

  • Google カレンダー - イベントの作成・更新・削除、空き時間の検索
  • Gmail - メールの検索・閲覧・送信、ラベル管理
  • Google ドライブ - ファイル検索、フォルダ作成、ファイルダウンロード
  • Google ドキュメント - ドキュメントの作成・閲覧・編集(Markdown対応)
  • Google スプレッドシート - データの読み取り(テキスト/CSV/JSON形式)
  • Google スライド - プレゼンテーション内容の読み取り
  • Google Chat - メッセージ送信、スペース管理
  • People API - ユーザープロフィール・組織情報の取得

インストール

バイナリをダウンロード

Releases から最新のバイナリをダウンロード:

プラットフォーム アーキテクチャ ファイル名
macOS Apple Silicon (M1/M2/M3) workspace-server-darwin-arm64
macOS Intel workspace-server-darwin-amd64
Linux x86_64 workspace-server-linux-amd64
Linux ARM64 workspace-server-linux-arm64
Windows x86_64 workspace-server-windows-amd64.exe
# 例: macOS Apple Silicon
curl -L -o workspace-server https://github.com/tomohiro-owada/google-workspace-mcp/releases/latest/download/workspace-server-darwin-arm64
chmod +x workspace-server
sudo mv workspace-server /usr/local/bin/

ソースからビルド

git clone https://github.com/tomohiro-owada/google-workspace-mcp.git
cd google-workspace-mcp
go build -o workspace-server ./cmd/workspace-server/

設定

Claude Code

~/.claude.json に追加:

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server"
    }
  }
}

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) に追加:

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server"
    }
  }
}

認証

OAuth 2.0 を使用して Google 認証を行います。初回使用時は認証が必要です:

# 認証状態を確認
auth.status

# ログイン(ブラウザが開きます)
auth.login

# 認証情報をクリア
auth.clear

アクセスモード

このサーバーは2つのアクセスモードをサポートしています:

モード 権限 セットアップ
Basic 読み取り専用 不要(デフォルト)
Full Access 読み取り + 書き込み + 削除 カスタムOAuth認証情報が必要

Basic モード(デフォルト)

追加設定なしで読み取り専用の権限で動作します。

Full Access モード

書き込み操作(メール送信、ドキュメント作成など)を有効にするには、独自のOAuth認証情報を設定する必要があります。

セットアップ手順
1. Google Cloud プロジェクトを作成
  1. Google Cloud Console にアクセス
  2. 新しいプロジェクトを作成(例: workspace-mcp
  3. 以下のAPIを有効化:
    • Google Calendar API
    • Gmail API
    • Google Drive API
    • Google Docs API
    • Google Sheets API
    • Google Slides API
    • Google Chat API
    • People API
2. OAuth 同意画面を設定
  1. APIとサービス > OAuth 同意画面 に移動
  2. ユーザータイプを選択:
    • 内部: Google Workspace 組織向け(組織内の全メンバーが利用可能)
    • 外部: 個人の Gmail アカウント向け(テストユーザーの追加またはGoogle審査が必要)
  3. 必須項目を入力(アプリ名、ユーザーサポートメール、デベロッパー連絡先)
  4. スコープを追加(またはスキップ - 実行時に要求されます)
  5. 外部の場合: テストユーザーを追加(あなたのGmailアドレス)
3. OAuth 認証情報を作成
  1. APIとサービス > 認証情報 に移動
  2. 認証情報を作成 > OAuth クライアント ID をクリック
  3. デスクトップアプリ を選択
  4. クライアントIDクライアントシークレット をコピー
4. MCP サーバーを設定

MCP設定に環境変数を追加:

Claude Code (~/.claude.json):

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server",
      "env": {
        "GOOGLE_CLIENT_ID": "your-client-id.apps.googleusercontent.com",
        "GOOGLE_CLIENT_SECRET": "your-client-secret"
      }
    }
  }
}

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "google-workspace": {
      "command": "/usr/local/bin/workspace-server",
      "env": {
        "GOOGLE_CLIENT_ID": "your-client-id.apps.googleusercontent.com",
        "GOOGLE_CLIENT_SECRET": "your-client-secret"
      }
    }
  }
}
5. 再認証

設定後、MCPサーバーを再起動し、auth.login を再実行してください。

セキュリティ

このサーバーは AI アシスタントに Google Workspace データの読み取り・変更・削除の権限を付与します。以下の点に注意してください:

  • AI アシスタントが行うアクションを確認する
  • 信頼できないコンテンツ(不明な送信元からのメール、ドキュメントなど)を処理しない
  • 認証情報はシステムキーチェーンに安全に保存されます

ライセンス

Apache License 2.0

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MCP server for Google Workspace APIs (Calendar, Gmail, Drive, Docs, Sheets, Slides, Chat)

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