Hooker — Claude Code Hook Designer

Design, write, and manage Claude Code hooks with history-driven pattern detection and layered control analysis.

When to Use

• You want to know what hooks you should have based on past session behavior
• Writing a new hook and want the correct event type, matcher, async flag, and dedup strategy
• An existing hook is firing too slowly, blocking Claude, or firing twice
• You want to understand what control layer a behavior belongs to before writing anything

Don't Use For

• General settings.json changes → update-config skill

• Debugging why a hook is erroring (check stderr output in the JSONL) → code-debugging skill

• Syncing hooks across platforms — hookify rules are intentionally local (*.local.md) and cannot sync to Gemini/OpenCode