GitHub PR Comments MCP server

GitHub PR Comments MCP is a server that fetches pull request comments from GitHub repositories using the Model Context Protocol. It retrieves PR comments along with their file paths, line ranges, and replies using a GitHub personal access token.

Installation Options

Using Smithery

The easiest way to install the GitHub PR Comments MCP server for Claude Desktop is via Smithery:

npx -y @smithery/cli install github-pr-mcp --client claude

Manual Installation

To install the server manually:

1. Clone the repository
2. Install dependencies:

npm install

3. Create a .env file containing your GitHub token:

GITHUB_TOKEN=your_github_token_here

Running the Server

To run the server:

1. Build the project:

npm run build

2. Start the server:

npm start

Or directly with a GitHub token:

node dist/server.js your_github_token_here

Using the Server

The server provides a tool called get_pr_comments that accepts the following parameters:

• owner: Repository owner (username or organization)
• repo: Repository name
• pull_number: Pull request number

Integration with Cursor

To integrate with Cursor, use the following command in Cursor's MCP server configuration:

node /path/to/dist/server.js your_github_token_here

Replace /path/to with the actual path to your project, and use your GitHub personal access token.

Testing the Server

You can verify the server functionality using the included test client:

1. Build the project:

npm run build

2. Run the test client:

npm test

This will start the server, connect to it, and call the get_pr_comments tool with sample parameters.

Response Format

The server returns comments in a structured JSON format:

{
  "comments": [
    {
      "id": 123456789,
      "path": "src/example.js",
      "body": "This is a comment on a specific line",
      "line": 42,
      "start_line": 40,
      "user": {
        "login": "username"
      },
      "created_at": "2023-01-01T00:00:00Z",
      "replies": [
        {
          "id": 987654321,
          "body": "This is a reply to the comment",
          "user": {
            "login": "another-username"
          },
          "created_at": "2023-01-02T00:00:00Z"
        }
      ]
    }
  ]
}

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "github-pr-mcp" '{"command":"node","args":["/path/to/dist/server.js","your_github_token_here"]}'

See the official Claude Code MCP documentation for more details.

For 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 > Tools & Integrations and click "New MCP Server".

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

{
    "mcpServers": {
        "github-pr-mcp": {
            "command": "node",
            "args": [
                "/path/to/dist/server.js",
                "your_github_token_here"
            ]
        }
    }
}

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 explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

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

2. Add this to your configuration file:

{
    "mcpServers": {
        "github-pr-mcp": {
            "command": "node",
            "args": [
                "/path/to/dist/server.js",
                "your_github_token_here"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect