What is the difference between command hooks and prompt hooks?

Command hooks execute bash scripts for speed and deterministic logic, while prompt hooks use Claude's reasoning capabilities for complex, nuanced evaluations.

What is a prompt-based hook in Claude Code?

A prompt-based hook uses LLM reasoning to evaluate context and make decisions, such as approving or denying a tool call based on natural language instructions rather than rigid code.

Where do I define plugin-specific hooks?

Plugin-specific hooks are defined in a 'hooks/hooks.json' file within your plugin directory, using a specific wrapper format that separates them from global user settings.

Can I persist environment variables across sessions?

Yes, by using a SessionStart hook and writing exports to the $CLAUDE_ENV_FILE, you can maintain custom environment variables throughout your entire Claude session.

How do I secure file operations using hooks?

You can use PreToolUse hooks with matchers like 'Write' or 'Edit' to inspect file paths for traversal attacks or sensitive file access before the command is executed.

Hook Development

Name: Hook Development
Author: kgadek

bykgadek

0•

開発者ツール

Builds and configures event-driven automation hooks for Claude Code plugins to validate tool use and enhance workflow safety.

This skill provides a comprehensive framework for implementing Claude Code plugin hooks, enabling developers to automate actions and enforce policies across the development lifecycle. It supports both advanced prompt-based hooks for context-aware LLM reasoning and high-performance bash command hooks for deterministic checks. By leveraging event triggers like PreToolUse and SessionStart, users can implement robust security boundaries, manage complex project contexts via environment variables, and ensure task completion through rigorous validation criteria.

主な機能

010 GitHub stars

02Implements prompt-based hooks for context-aware LLM validation

03Enforces security policies with file path and tool call validation

04Configures bash command hooks for fast, deterministic performance

05Automates environment variable persistence across Claude sessions

06Manages lifecycle events including PreToolUse, PostToolUse, and SessionStart

ユースケース

01Preventing accidental execution of dangerous shell commands or file writes

02Automatically loading project-specific context and environment variables at session start

03Verifying code quality and test coverage before allowing Claude to finish a task

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add kgadek/kgadek-claude-plugin hook-development

For use in Claude.ai and ChatGPT

Download Skill