Google Tasks MCP Server

Model Context Protocol (MCP) server for Google Tasks
Enable AI assistants like Claude to manage your Google Tasks

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🚀 Quick Start

1. Create Google OAuth Credentials

1. Go to Google Cloud Console
2. Create a new project (or select existing)
3. Enable the Google Tasks API:
   • Navigate to "APIs & Services" > "Library"
   • Search for "Tasks API"
   • Click "Enable"
4. Create OAuth 2.0 credentials:
   • Go to "APIs & Services" > "Credentials"
   • Click "Create Credentials" > "OAuth client ID"
   • Choose "Desktop app" as the application type
   • Name it "Google Tasks MCP" (or whatever you prefer)
   • Click "Create"
5. Download or copy the Client ID and Client Secret

2. Install the Package

npm install -g @brandcast_app/google-tasks-mcp

3. Get Your Refresh Token

Run the authentication script:

# Set your credentials
export GOOGLE_CLIENT_ID="your_client_id_here"
export GOOGLE_CLIENT_SECRET="your_client_secret_here"

# Run auth flow
npx @brandcast_app/google-tasks-mcp auth

This will:

1. Open your browser
2. Ask you to authorize the app
3. Display your configuration to copy

4. Configure Claude Desktop

Add to your config file:

macOS/Linux: ~/.config/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "google-tasks": {
      "command": "npx",
      "args": ["-y", "@brandcast_app/google-tasks-mcp"],
      "env": {
        "GOOGLE_CLIENT_ID": "your_client_id_here",
        "GOOGLE_CLIENT_SECRET": "your_client_secret_here",
        "GOOGLE_REFRESH_TOKEN": "your_refresh_token_here"
      }
    }
  }
}

5. Restart Claude Desktop

Completely quit and relaunch Claude Desktop.

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📋 Available Tools

Ask Claude to:

• "Show my task lists" - List all your Google Tasks lists
• "Show tasks from [list name]" - Get tasks from a specific list
• "Create a task 'Buy milk' in my Shopping list" - Create new tasks
• "Mark task [id] as complete" - Complete tasks
• "Search for tasks about 'report'" - Search across all lists
• "Show me all my tasks" - Sync all tasks from all lists

The MCP server provides 9 tools:

1. listProviders - Get available providers
2. listTaskLists - Get all task lists
3. getTasks - Get tasks from a list
4. createTask - Create a new task
5. updateTask - Update existing task
6. completeTask - Mark task complete
7. deleteTask - Delete a task
8. searchTasks - Search across lists
9. syncAllTasks - Get all tasks

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🔧 Development

Local Setup

# Clone the repository
git clone https://github.com/BrandCast-Signage/tasks-mcp-server.git
cd tasks-mcp-server

# Install dependencies
npm install

# Build
npm run build

# Run auth flow
export GOOGLE_CLIENT_ID="your_id"
export GOOGLE_CLIENT_SECRET="your_secret"
npm run auth

Testing Locally

Update Claude Desktop config to use local build:

{
  "mcpServers": {
    "google-tasks": {
      "command": "node",
      "args": ["/absolute/path/to/tasks-mcp-server/dist/index.js"],
      "env": {
        "GOOGLE_CLIENT_ID": "...",
        "GOOGLE_CLIENT_SECRET": "...",
        "GOOGLE_REFRESH_TOKEN": "..."
      }
    }
  }
}

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📖 Documentation

• API Documentation - Complete tool reference
• Claude Desktop Setup - Detailed setup guide

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🔐 Security Notes

• Tokens are stored only in Claude Desktop's config file
• Refresh tokens are used to automatically get new access tokens
• The MCP server doesn't persist any credentials to disk
• All communication happens locally via stdio

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🐛 Troubleshooting

"Provider not found" error

• Make sure Claude Desktop is completely restarted
• Check the config file path is correct
• Verify JSON syntax is valid

Authentication errors

• Run npm run auth again to get a fresh refresh token
• Make sure Client ID and Secret match your Google Cloud project
• Verify the Tasks API is enabled in Google Cloud Console

"Command not found"

• Make sure the package is installed: npm install -g @brandcast_app/google-tasks-mcp
• Or use npx: npx @brandcast_app/google-tasks-mcp

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📄 License

MIT License - see LICENSE for details.

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👥 Contributing

Contributions welcome! Please open an issue or PR.

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🔗 Related Projects

• Model Context Protocol
• Google Tasks API
• BrandCast - Digital signage platform

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Author: Jamie Duncan (@BrandCast-Signage)

Version: 0.1.0 (MVP - Google Tasks only)