Git MCP Server (Go)

Git MCP Server (Go)

A Model Context Protocol (MCP) server for Git repository interaction and automation, written in Go. This server provides tools to read, search, and manipulate Git repositories via Large Language Models.

Features

This MCP server provides the following Git operations as tools:

• git_status: Shows the working tree status
• git_diff_unstaged: Shows changes in the working directory that are not yet staged
• git_diff_staged: Shows changes that are staged for commit
• git_diff: Shows differences between branches or commits
• git_commit: Records changes to the repository
• git_add: Adds file contents to the staging area
• git_reset: Unstages all staged changes
• git_log: Shows the commit logs
• git_create_branch: Creates a new branch from an optional base branch
• git_checkout: Switches branches
• git_show: Shows the contents of a commit
• git_init: Initialize a new Git repository
• git_push: Pushes local commits to a remote repository (requires --write-access flag)
• git_list_repositories: Lists all available Git repositories

Installation

Prerequisites

• Go 1.18 or higher
• Git installed on your system

Download Prebuilt Binaries

You can download prebuilt binaries for your platform from the GitHub Releases page.

Building from Source

# Clone the repository
git clone https://github.com/geropl/git-mcp-go.git
cd git-mcp-go

# Build the server
go build -o git-mcp-go .

Install with go install

go install github.com/geropl/git-mcp-go@latest

Usage

Command Line Structure

The Git MCP Server uses a command-line structure with subcommands:

git-mcp-go
├── serve [flags] [repository-paths...]
│   ├── --repository, -r <paths>                  # Repository paths (multiple ways to specify)
│   ├── --mode <shell|go-git>
│   ├── --write-access
│   └── --verbose, -v
└── setup [flags] [repository-paths...]
    ├── --repository, -r <paths>                  # Repository paths (multiple ways to specify)
    ├── --mode <shell|go-git>
    ├── --write-access
    ├── --auto-approve <tool-list|allow-read-only|allow-local-only>
    └── --tool <cline,roo-code>

Multi-Repository Support

The Git MCP Server can now monitor and operate on multiple repositories simultaneously. You can specify repositories in several ways:

1. Using the -r/--repository flag:
   • With comma-separated paths: -r=/path/to/repo1,/path/to/repo2
   • With multiple flag instances: -r=/path/to/repo1 -r=/path/to/repo2
2. As positional arguments: serve /path/to/repo1 /path/to/repo2
3. A combination of both approaches

When using multiple repositories, the server will default to the first repository for operations where a specific repository is not specified.

serve Command

The serve command starts the Git MCP server:

# Run with verbose logging
./git-mcp-go serve -v /path/to/repo1 /path/to/repo2 /path/to/repo3

# Run with go-git implementation
./git-mcp-go serve --mode go-git -r=/path/to/repo1,/path/to/repo2

# Enable write access for remote operations
./git-mcp-go serve -r=/path/to/repo1,/path/to/repo2 --write-access

The --mode flag allows you to choose between two different implementations:

• shell: Uses the Git CLI commands via shell execution (default)
• go-git: Uses the go-git library for Git operations where possible

The --write-access flag enables operations that modify remote state (currently only the push operation). By default, this is disabled for safety.

setup Command

The setup command sets up the Git MCP server for use with an AI assistant. It copies itself to ~/mcp-servers/git-mcp-go and modifies the tools config (cline: cline_mcp_settings.json) to use that binary.

# Set up for Cline with a single repository
./git-mcp-go setup -r /path/to/git/repository

# Set up with repositories as arguments
./git-mcp-go setup /path/to/repo1 /path/to/repo2 /path/to/repo3

# Set up with write access enabled
./git-mcp-go setup -r=/path/to/repo1,/path/to/repo2 --write-access

# Set up with auto-approval for read-only tools
./git-mcp-go setup -r=/path/to/repo1,/path/to/repo2 --auto-approve=allow-read-only

# Set up with specific tools auto-approved
./git-mcp-go setup -r=/path/to/repo1,/path/to/repo2 --auto-approve=git_status,git_log

# Set up with write access and auto-approval for read-only tools
./git-mcp-go setup -r=/path/to/repo1,/path/to/repo2 --write-access --auto-approve=allow-read-only

The --auto-approve flag allows you to specify which tools should be auto-approved (not require explicit user approval):

• allow-read-only: Auto-approve all read-only tools (git_status, git_diff_unstaged, git_diff_staged, git_log, git_show, git_diff)
• allow-local-only: Auto-approve all local-only tools (incl. git_commit, git_add, git_reset, but not git_push)
• comma-separated list: Auto-approve specific tools (e.g., git_status,git_log)

Repository Management

The git_list_repositories Tool

This tool lists all available Git repositories that the server is monitoring. It shows:

• The total number of repositories
• The path to each repository
• The repository name (derived from the directory name)

Example output:

Available repositories (3):

1. repo1 (/path/to/repo1)
2. repo2 (/path/to/repo2)
3. another-project (/path/to/another-project)

Repository Selection

When running commands that require a repository path:

1. If a specific repo_path is provided in the command, it will be used.
2. If no repo_path is provided and multiple repositories are configured, the first repository will be used as the default.
3. Each command output will indicate which repository was used for the operation.

Installation

Automatic Installation and Configuration

The easiest way to install and register the Git MCP server with Cline is to use the setup command:

# Download linux binary for the latest release
RELEASE="$(curl -s https://api.github.com/repos/geropl/git-mcp-go/releases/latest)"
DOWNLOAD_URL="$(echo $RELEASE | jq -r '.assets[] | select(.name | contains("linux-amd64")) | .browser_download_url')"
curl -L -o ./git-mcp-go $DOWNLOAD_URL
chmod +x ./git-mcp-go

# Setup the mcp server with a single repository
./git-mcp-go setup -r /path/to/git/repository --tool=cline --auto-approve=allow-local-only

# Setup the mcp server with multiple repositories
./git-mcp-go setup -r=/path/to/repo1,/path/to/repo2 --tool=cline --auto-approve=allow-local-only

rm -f ./git-mcp-go

The setup command will:

1. Copy the executable to the Cline MCP directory
2. Create a registration script that configures Cline to use the Git MCP server

Manual Configuration

Alternatively, you can manually add this to your claude_desktop_config.json:

"mcpServers": {
  "git": {
    "command": "/path/to/git-mcp-go",
    "args": ["serve", "-r=/path/to/repo1,/path/to/repo2", "--mode", "shell"]
  }
}

"mcpServers": {
  "git": {
    "command": "/path/to/git-mcp-go",
    "args": ["serve", "-r", "/path/to/git/repository"]
  }
}

Implementation Details

This server is implemented using:

• mcp-go: Go SDK for the Model Context Protocol
• go-git: Pure Go implementation of Git (used for the go-git mode)

For operations not supported by go-git, the server falls back to using the Git CLI.

Development

Testing

The server includes comprehensive tests for all Git operations. The tests are designed to run against both implementation modes:

# Run all tests
go test ./pkg -v

# Run specific tests
go test ./pkg -v -run TestGitOperations/push

The test suite creates temporary repositories for each test case and verifies that the operations work correctly in both modes.

Continuous Integration

This project uses GitHub Actions for continuous integration and deployment:

• Automated tests run on every pull request to the main branch
• Releases are created when a tag with the format v* is pushed
• Each release includes binaries for multiple platforms:
  • Linux (amd64, arm64)
  • macOS (amd64, arm64)
  • Windows (amd64)

To create a new release:

# 1. Update the version in pkg/server.go (line ~26)
# Edit the version string in NewGitServer function

# 2. Commit the version change
git add pkg/server.go
git commit -m "Bump version to v1.3.1"

# 3. Push the commit
git push origin main

# 4. Tag the current commit
git tag v1.3.1

# 5. Push the tag to GitHub (this triggers the release)
git push origin v1.3.1

License

This project is licensed under the MIT License.