GitHub PR Reviewer (Notion) MCP server

PR Reviewer is an intelligent assistant that automatically analyzes GitHub Pull Requests and integrates with Notion for structured documentation. It leverages MCP (Model-Controller-Provider) architecture for efficient processing, providing detailed code change analysis and automatic documentation generation.

Installation Requirements

Prerequisites

• Python 3.8 or higher
• GitHub account with access token
• Notion account with API permissions
• Configured access tokens

Setup Instructions

1. Clone the repository:

   git clone [your-repository]
   cd pr_reviewer
   

2. Create and activate a virtual environment:

   python -m venv .venv
   source .venv/bin/activate  # Linux/Mac
   # or
   .venv\Scripts\activate  # Windows
   

3. Install dependencies:

   pip install -r requirements.txt
   

4. Configure environment variables: Create a .env file with the following variables:

   NOTION_API_KEY=your_notion_token
   NOTION_PAGE_ID=notion_page_id
   GITHUB_TOKEN=your_github_token
   

Usage Guide

To start the PR analyzer, run:

python pr_analyzer.py

What Happens When You Run It

The service will:

1. Initialize the MCP server for PR analysis
2. Establish connection with the GitHub API
3. Configure Notion integration
4. Wait for PR analysis requests
5. Automatically generate documentation in Notion

Workflow

When the PR Reviewer receives a request, it:

• Fetches PR information from GitHub
• Analyzes code changes
• Generates structured documentation
• Publishes the results to your configured Notion page

Architecture Overview

The project consists of two main components:

PR Analyzer

• Initializes the FastMCP server
• Manages Notion integration
• Registers tools for PR analysis
• Processes analysis requests

GitHub Integration

• Manages GitHub API communication
• Retrieves Pull Request information
• Processes code changes

How to add this MCP server to Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > MCP and click "Add new global MCP server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.