Mergestat

An MCP server that allows you to query git repositories using SQL via MergeStat.

Features

• mergestat_sql: Execute SQL queries against a git repository (e.g. SELECT * FROM commits LIMIT 10).

Prerequisites

1. Node.js: Ensure Node.js is installed.

2. MergeStat CLI: This server wraps the mergestat CLI tool.

   macOS (Homebrew):

   brew install mergestat
   

   For other platforms, please refer to the MergeStat installation guide.

Installation

1. Clone or download this repository.
2. Install dependencies:

   npm install
   

3. Make the entry script executable (optional):

   chmod +x index.js
   

Configuration

Claude Desktop

To use this server with Claude Desktop, add the following configuration to your claude_desktop_config.json file.

Location:

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

Configuration:

Replace /absolute/path/to/mergestat-mcp with the actual path to this directory.

{
  "mcpServers": {
    "mergestat": {
      "command": "node",
      "args": [
        "/absolute/path/to/mergestat-mcp/index.js"
      ]
    }
  }
}

Cursor

To use this server with Cursor:

1. Open Cursor Settings.

2. Navigate to Features -> MCP.

3. Click + Add New MCP Server.

4. Enter the following details:

   • Name: mergestat (or any name you prefer)
   • Type: command (stdio)
   • Command: node /absolute/path/to/mergestat-mcp/index.js

   (Ensure you replace /absolute/path/to/mergestat-mcp with the actual absolute path)

Usage

Once connected, you can ask Claude or Cursor to query your git repository.

Example Prompts:

• "Show me the last 5 commits in this repo along with their authors."
• "Count how many commits were made by 'Jane Doe'."
• "List all files modified in the latest commit."

Note: By default, the server queries the repository in the current working directory of the process. You can optionally specify a repoPath in the tool call if the LLM determines it's necessary, but for most "chat with codebase" scenarios, passing the path to the currently open project is recommended.