Create and manage Claude Code hooks across nine lifecycle events.
npx skills add https://github.com/ronnycoding/.claude --skill create-hooks
Please help me install this Agent Skill. Skill: create-hooks Source: https://github.com/ronnycoding/.claude/tree/main/skills/create-hooks Command: npx skills add https://github.com/ronnycoding/.claude --skill create-hooks
This Skill eliminates the need for manual, repetitive tasks and provides deterministic control over Claude Code's lifecycle, ensuring consistent behavior and security.
PostToolUse hook to automatically format all JavaScript/TypeScript files whenever Claude Code makes an edit, ensuring consistent code style without manual intervention.Create a hook to automatically run prettier --write on any .js or .ts file after Claude Code edits it.
High-intent search queries and answers about installing and using this skill.
Create a PostToolUse hook that triggers Prettier or similar formatters on modified files. Configure the hook in ~/.claude/settings.json with a matcher for your file types (.js, .ts, etc.), and Claude Code will automatically format code after each edit without manual intervention.
Hooks are user-defined shell commands that execute at nine Claude Code lifecycle events: PreToolUse, PostToolUse, UserPromptSubmit, Notification, Stop, SubagentStop, PreCompact, SessionStart, and SessionEnd. They enable deterministic automation for tasks like validation, formatting, logging, and security checks.
Yes. Use a PreToolUse hook with file matchers to intercept tool execution before it happens. Return exit code 2 to block the operation, enabling file protection and validation before Claude Code makes changes to sensitive files.
Define hooks in ~/.claude/settings.json with event triggers, file matchers, and shell commands. Claude Code passes event data as JSON stdin to your hook script; parse it with jq and execute your automation logic. Exit code 0 succeeds; code 2 blocks PreToolUse events.
Hooks require jq for JSON parsing and Prettier for code formatting (optional, depending on use case). Both are standard tools; jq parses the JSON event data hooks receive, and Prettier formats code in PostToolUse workflows.
Yes. Use SessionStart and SessionEnd hooks to log session lifecycle events, and PostToolUse hooks to clean up temporary files after tool execution. Combine multiple hooks across different events to orchestrate complex automation workflows.
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