Claude Code Hooks Development

About

This skill provides a comprehensive framework for developing Claude Code hooks across all 10 lifecycle events. It specifically addresses the common 'invisible output' issue by teaching the precise JSON schema and exit code requirements needed for Claude to perceive and respond to hook feedback. Whether you are implementing PreToolUse guards for security or PostToolUse validation for code quality, this skill provides the minimal working patterns, debugging checklists, and architectural references required to extend Claude's capabilities safely and effectively.

Key Features

• Detailed troubleshooting for hook exit codes and stdout/stderr behavior
• Minimal working Bash and jq templates for rapid development
• 2 GitHub stars
• Implementation guides for the 'decision: block' visibility pattern
• Debugging checklists for fixing invisible hook messages
• Full coverage of all 10 Claude Code hook lifecycle events

Use Cases

• Debugging and fixing existing hooks that fail to communicate with the AI
• Building custom linting or security guards that intercept file writes
• Implementing automated validation loops after tool execution