writing-hookify-rules
This skill should be used when the user asks to "create a hookify rule", "write a hook rule", "configure hookify", "add a hookify rule", or needs guidance on hookify rule syntax and patterns.
Profile →npx skills add anthropics/claude-plugins-official --skill writing-rules --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Writing Hookify Rules ## Overview Hookify rules are markdown files with YAML frontmatter that define patterns to watch for and messages to show when those patterns match. Rules are stored in `.claude/hookify.{rule-name}.local.md` files. ## Rule File Format ### Basic Structure ```markdown --- name: rule-identifier enabled: true event: bash|file|stop|prompt|all pattern: regex-pattern-here --- Message to show Claude when this rule triggers. Can include markdown formatting, warnings, suggestions, etc. ``` ### Frontmatter Fields **name** (required): Unique identifier for the rule - Use kebab-case: `warn-dangerous-rm`, `block-console-log` - Be descriptive and action-oriented - Start with verb: warn, prevent, block, require, check **enabled** (required): Boolean to activate/deactivate - `true`: Rule is active - `false`: Rule is disabled (won't trigger) - Can toggle without deleting rule **event** (required): Which hook event to trigger on - `bash`: Bash tool commands - `file`: Edit, Write, MultiEdit tools - `stop`: When agent wants to stop - `prompt`: When user submits a prompt - `all`: All events **action** (optional): What to do when rule matches - `warn`: Show message but allow opera
- Overview
- Rule File Format
- Basic Structure
- Frontmatter Fields
- Advanced Format (Multiple Conditions)
- Message Body
- Event Type Guide
- bash Events
- file Events
- stop Events
- prompt Events
- Pattern Writing Tips
- Regex Basics
- Testing Patterns
python3 -c "import re; print(re.search(r'your_pattern', 'test text'))"
What does the writing-hookify-rules skill do?
This skill should be used when the user asks to "create a hookify rule", "write a hook rule", "configure hookify", "add a hookify rule", or needs guidance on hookify rule syntax and patterns.
How do I install it?
Run `npx skills add anthropics/claude-plugins-official --skill writing-rules --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From anthropics/claude-plugins-official, a repository with 33,027 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.