Claude Git Hook

Automatically generate intelligent commit messages using Claude AI. This package installs a git hook that analyzes your code changes and creates descriptive commit messages following conventional commit standards with automatic issue extraction from branch names.

Features

• 🤖 AI-powered: Uses Claude AI to analyze code changes
• 📝 Conventional commits: Follows standard commit message format
• 🎯 Issue extraction: Automatically extracts issue numbers from branch names
• 🔄 Fallback system: Works even when API is unavailable
• 🚀 Easy installation: Simple Composer package
• ⚡ Fast setup: Automatic installation via Composer scripts
• 🐍 No Python dependency: Works with basic Unix tools

Commit Message Format

Generated messages follow this format:

[ISSUE-123] type: short descriptive title

Detailed description of what changed and why.
Include technical details and impact.

issue: ISSUE-123

Examples

Input: Branch feature/CAM-942-implement-auth with authentication code changes

Output:

[CAM-942] feat: implement user authentication system

Add JWT-based authentication with login, logout, and token refresh.
Includes middleware for route protection and session management.

issue: CAM-942

Installation

Via Composer (Recommended)

composer require mi-lopez/claude-git-hook --dev

The hook will be automatically installed after Composer finishes.

Manual Installation

1. Clone this repository
2. Run the installer:

php src/Installer.php

Configuration

1. Get Claude API Key

1. Visit Anthropic Console
2. Create an account or sign in
3. Generate an API key

2. Configure API Key

# Use the CLI tool to configure interactively
./vendor/bin/claude-git-hook configure

Or set manually:

# Set environment variable
export CLAUDE_API_KEY="your-api-key-here"

# Make it permanent
echo 'export CLAUDE_API_KEY="your-api-key-here"' >> ~/.bashrc
source ~/.bashrc

Usage

Once installed and configured, the hook works automatically:

# Make your changes on a branch like: feature/CAM-123-new-feature
git add .

# Commit - message will be generated automatically
git commit

# Result:
# [CAM-123] feat: implement new feature functionality
# 
# Add comprehensive feature implementation with proper error handling.
# Includes unit tests and documentation updates.
# 
# issue: CAM-123

Manual Commands

# Check installation status
./vendor/bin/claude-git-hook status

# Reinstall hook
./vendor/bin/claude-git-hook install

# Remove hook
./vendor/bin/claude-git-hook uninstall

# Configure API key
./vendor/bin/claude-git-hook configure

# Debug information
./vendor/bin/claude-git-hook debug

Branch Name Patterns

The hook automatically extracts issue numbers from branch names:

• ✅ feature/CAM-942-implement-auth → CAM-942
• ✅ CAM-942-implement-auth → CAM-942
• ✅ TRIGB2B-42141-fix-login → TRIGB2B-42141
• ✅ bugfix/PROJ-123-memory-leak → PROJ-123
• ❌ feature-branch → No issue extracted

How It Works

1. Code Analysis: When you run git commit, the hook captures your staged changes
2. Branch Analysis: Extracts issue number from current branch name
3. AI Processing: Sends the diff to Claude AI for analysis
4. Message Generation: Claude generates a structured commit message
5. Fallback: If API fails, generates a basic message based on file analysis

Commit Message Types

The generated messages use conventional commit types:

• feat: New features
• fix: Bug fixes
• docs: Documentation changes
• style: Code style changes
• refactor: Code refactoring
• test: Test changes
• chore: Maintenance tasks

Configuration Options

Environment Variables

• CLAUDE_API_KEY: Your Claude API key (required)

Custom Configuration

You can modify the hook behavior by editing .git/hooks/prepare-commit-msg directly.

Requirements

• Git repository
• curl (for API calls)
• Basic Unix tools (grep, sed, tr)
• Claude API key

Troubleshooting

Hook Not Working

# Check status
./vendor/bin/claude-git-hook status

# Reinstall
./vendor/bin/claude-git-hook install

API Key Issues

# Verify API key is set
echo $CLAUDE_API_KEY

# Reconfigure
./vendor/bin/claude-git-hook configure

Permission Issues

# Fix hook permissions
chmod +x .git/hooks/prepare-commit-msg

Debug Information

# Get detailed debug info
./vendor/bin/claude-git-hook debug

Development

Project Structure

├── composer.json          # Package configuration
├── src/
│   └── Installer.php      # Installation logic
├── bin/
│   └── claude-git-hook    # CLI command
├── tests/                 # PHPUnit tests
├── .github/
│   └── workflows/         # GitHub Actions
└── README.md             # Documentation

Running Tests

# Install dev dependencies
composer install

# Run tests
composer test

# Run tests with coverage
composer test-coverage

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests if applicable
5. Run the test suite
6. Submit a pull request

Code Style

This project follows PSR-12 coding standards:

# Check code style
composer cs-check

# Fix code style
composer cs-fix

License

MIT License. See LICENSE file for details.

Support

• 📖 Documentation
• 🐛 Issues
• 💬 Discussions

Changelog

v1.0.0

• Initial release
• Basic commit message generation
• Issue extraction from branch names
• Composer package support
• CLI interface
• Fallback system
• No Python dependency

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Made with ❤️ and AI by mi-lopez