This teaches Claude how to write Hookify rules, those markdown files with YAML frontmatter that watch for patterns in your commands and file edits. You'd use it when setting up project guardrails like blocking chmod 777, warning about console.log statements, or catching API keys in .env files. The skill covers the full syntax including event types (bash, file, stop, prompt), regex patterns, and the conditions format for complex rules. Worth noting it includes practical regex tips and common pitfalls, which matters since a pattern that's too broad will fire constantly and one that's too specific won't catch anything. The /hookify command can auto-generate rules from your conversation context, which is clever.
npx skills add https://github.com/affaan-m/everything-claude-code --skill hookify-rules