Notion MCP Server

A Model Context Protocol (MCP) server implementation for Notion integration, providing a standardized interface for interacting with Notion's API. Compatible with Claude Desktop and other MCP clients.

Features

• List and query Notion databases
• Create and update pages
• Search across Notion workspace
• Get database details and block children
• Full async/await support with httpx
• Type-safe with Pydantic v2 models
• Proper error handling with detailed logging
• Compatibility with MCP 1.6.0

Installation

Installing via Smithery

To install Notion Integration Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @ccabanillas/notion-mcp --client claude

Manual Installation

1. Clone the repository:

git clone https://github.com/ccabanillas/notion-mcp.git
cd notion-mcp

2. Create a virtual environment and install dependencies (using uv):

uv venv
source .venv/bin/activate  # On Windows: .venv\Scripts\activate
uv pip install -e .

Alternatively, using standard venv:

python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate
pip install -e .

3. Create a .env file in the project root:

NOTION_API_KEY=your_notion_integration_token

Usage

1. Test the server (it should run without errors):

python -m notion_mcp

2. To use it with Claude Desktop, adjust your claude_desktop_config.json file (located at ~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "servers": {
    "notion-mcp": {
      "command": "/Users/username/Projects/notion-mcp/.venv/bin/python",
      "args": ["-m", "notion_mcp"],
      "cwd": "/Users/username/Projects/notion-mcp"
    }
  }
}

Be sure to replace /Users/username/ with your actual home directory path.

Development

Project Structure

notion-mcp/
├── src/
│   └── notion_mcp/
│       ├── models/
│       │   ├── __init__.py
│       │   └── notion.py      # Pydantic models for Notion objects
│       ├── __init__.py        
│       ├── __main__.py        # Entry point
│       ├── client.py          # Notion API client
│       └── server.py          # MCP server implementation
├── .env                       # Environment variables (add your Notion API key here)
├── .gitignore
├── pyproject.toml             # Project dependencies
└── README.md

Running Tests

pytest

Configuration

The server requires a Notion integration token. To set this up:

1. Go to https://www.notion.so/my-integrations
2. Create a new integration with appropriate capabilities (read/write as needed)
3. Copy the integration token
4. Add it to your .env file in the project root directory:

NOTION_API_KEY=your_notion_integration_token

5. Share your Notion databases with the integration (from the database's "Share" menu)

Contributing

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

MIT License - Use at your own risk

Troubleshooting

Common Issues

• Connection Errors: Make sure your Notion API key is correct and you have internet access
• Permission Errors: Ensure your integration has been given access to the databases you're trying to access
• Claude Desktop Integration: If Claude Desktop isn't connecting, check that your config path is correct and that the server is running without logging to stdout

Acknowledgments

• Built to work with Claude Desktop and other MCP clients
• Uses Notion's API (latest compatible version 2022-02-22)
• MCP 1.6.0 compatibility maintained
• Special thanks to danhilse, I referenced his notion-mcp-server project