managing-hooks

What problem does it solve?

Claude Code hooks control automated actions at various lifecycle points. This Skill helps design, implement, analyze, and secure hooks across multiple event types (command-based and prompt-based) with guidance for security validation, debugging, and evolution.

Core Features & Use Cases

• Create new hooks with event type, matcher, and actions
• Analyze existing hooks for performance, reliability, and security
• Validate hook configurations against security and policy checklists
• Debug hook activation and timing across events
• Update hook configurations and patterns as requirements evolve
• Understand hook concepts and event lifecycles (PreToolUse, PostToolUse, SessionStart, SessionEnd, Stop, SubagentStop, UserPromptSubmit, Notification, PreCompact)

Quick Start

Create a basic PreToolUse hook for the Write tool to demonstrate blocking or modifying input, then test with a simple input transcript.