Hook Development for Claude Code

About

This skill provides expert guidance for developers extending Claude Code through custom hooks, covering everything from prompt-based reasoning to deterministic command execution. It helps users implement the full lifecycle of hook events—such as PreToolUse for safety validation, SessionStart for context loading, and Stop for task verification—ensuring that AI interactions are secure, context-aware, and highly automated. Whether you are building complex plugins or optimizing your local development environment, this skill provides the patterns and best practices needed to master Claude's extensibility API.

Key Features

• Comprehensive templates for prompt-based and command-driven hooks
• Automation of session-specific context and environment variable persistence
• Best practices for portable plugin development using environment variables
• 1 GitHub stars
• Secure scripting patterns for deterministic tool and path validation
• Guidance on implementing PreToolUse, PostToolUse, and Stop event triggers

Use Cases

• Creating custom validation gates to ensure code quality before task completion
• Enforcing security policies by intercepting and blocking dangerous tool calls
• Automating project initialization and context loading at session startup