Claude Code Hook Development

Create hooks that run shell commands on specific events to add guardrails, automations, and policy enforcement.

Quick Reference

You MUST read the reference files for detailed schemas and examples:

• Hook Events Reference - All events with input/output schemas
• Examples: Firewall - Block dangerous commands
• Examples: Quality Checks - Lint/format after edits
• Examples: Pre-Push Tests - Run tests before git push

Core Concepts

Hook Types

1. Command hooks - Run bash scripts
2. Prompt hooks - Query LLM for context-aware decisions