Claude Code Hook Development

About

This skill provides a comprehensive framework for developers to extend Claude Code through specialized event-driven hooks. It enables the implementation of both deterministic command-based checks and advanced prompt-based validation, allowing developers to intercept tool calls, enforce security policies, and automate complex workflows. Whether you're building guardrails for dangerous commands or setting up project-specific context during session start, this skill offers the implementation patterns and best practices needed to create robust, production-grade Claude Code integrations.

Key Features

• Completion verification logic using Stop and SubagentStop hooks
• 0 GitHub stars
• Comprehensive tool validation via PreToolUse and PostToolUse events
• Support for context-aware Prompt-Based and deterministic Command-Based hooks
• Automated session lifecycle management with SessionStart and SessionEnd
• In-depth security patterns for path safety and input sanitization

Use Cases

• Automating environment setup and project context loading at the start of every AI session
• Implementing custom AI-driven quality gates to verify code completion before the agent stops
• Building automated security guardrails to block dangerous shell commands or path traversal