How does this skill improve hook reliability?

It enforces strict error handling patterns like 'set -euo pipefail' and 'trap' commands, ensuring hooks fail gracefully and provide helpful diagnostic information to stderr.

Can I filter which tools trigger a specific hook?

Yes, the skill supports matcher syntax to restrict hooks to specific tools like 'Bash' or 'Write' using regex-style patterns in the configuration.

What is a Claude Code hook?

A hook is a specialized script that Claude Code executes automatically at specific points in its lifecycle, such as before or after a tool is used, or when a session starts.

Why is a restart required after registering a hook?

Claude Code loads its hook configurations from settings.json during the startup process, so a restart is necessary to initialize any new or updated hooks.

Register Hook

Name: Register Hook
Author: cowwoc

bycowwoc

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개발자 도구

Automates the creation, permission management, and registration of robust lifecycle hooks for Claude Code.

The Register Hook skill streamlines the process of extending Claude Code's functionality by generating standardized shell scripts with built-in error handling and automatically registering them in your settings. It supports various trigger events—including session starts, tool executions, and prompt submissions—allowing developers to implement custom logging, safety validation, or context injection without manual configuration errors. By enforcing best practices like pipefail and error traps, it ensures that your automation remains reliable and easy to debug.

주요 기능

01Diagnostic output and testing instructions for newly created hooks

02Standardized shell script generation with mandatory error handling patterns

032 GitHub stars

04Automatic registration and validation within the settings.json file

05Comprehensive support for all Claude Code trigger events and matchers

06Integrated permission management for executable scripts

사용 사례

01Injecting project-specific context and environment data at the start of a session

02Preventing dangerous Git commands by creating a blocking validation hook

03Setting up an automated audit log for specific file edits or bash commands

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add cowwoc/claude-code-cat register-hook

For use in Claude.ai and ChatGPT

Download Skill