Claude Hooks SDK

Claude Hooks SDK

A Laravel-inspired PHP SDK for building Claude Code hook responses with a clean, fluent API. This SDK makes it easy to create structured JSON responses for Claude Code hooks using an expressive, chainable interface.

Claude Code hooks are user-defined shell commands that execute at specific points in Claude Code's lifecycle, providing deterministic control over its behavior. For more details, see the Claude Code Hooks documentation.

Installation

You can install the package via composer:

Usage

Creating a Claude Hook

Here's how to create a PHP script that Claude Code can use as a hook:

Step 1: Create your PHP hook script

Create a new PHP file (e.g., validate-code.php) using the SDK:

Step 2: Register your hook in Claude Code

1. Run the /hooks command in Claude Code
2. Select the PreToolUse hook event (runs before tool execution)
3. Add a matcher (e.g., Bash to match shell commands)
4. Add your hook command: php /path/to/your/validate-code.php
5. Save to user or project settings

Your hook is now active and will validate commands before Claude Code executes them!

Hook Types and Methods

The SDK automatically creates the appropriate hook type based on the input:

Response Methods

All hooks provide a fluent response API:

Example Hooks

Code Formatter Hook

Automatically format PHP files after edits:

Security Validator Hook

Prevent modifications to sensitive files:

Notification Handler Hook

Custom notification handling:

Testing

Changelog

Please see CHANGELOG for more information on what has changed recently.

Security Vulnerabilities

Please review our security policy on how to report security vulnerabilities.

Credits

- Marcel Pociot
- All Contributors

License

The MIT License (MIT). Please see License File for more information.