How can I persist environment variables across a session?

Use the SessionStart hook to append export commands to the $CLAUDE_ENV_FILE, which ensures those variables remain available for the duration of the Claude Code session.

How do I secure file operations using hooks?

Use PreToolUse hooks with path validation logic to detect and block path traversal or access to sensitive files like .env before the tool is executed.

What are prompt-based hooks in Claude Code?

Prompt-based hooks use natural language reasoning to evaluate whether a tool action is appropriate, allowing for context-aware decisions without complex bash scripting.

Can I run multiple hooks simultaneously?

Yes, all matching hooks run in parallel. This design allows for independent validation checks and performance optimization, though hooks do not see each other's output.

What is the difference between plugin hooks and user settings?

Plugin hooks are defined in a hooks.json wrapper for distribution within a plugin, while user settings are defined directly in .claude/settings.json for personal environment customization.

Claude Code Hook Architect

Name: Claude Code Hook Architect
Author: pur3v4d3r

bypur3v4d3r

•

개발자 도구

Implements event-driven automation and validation logic for Claude Code plugins using advanced prompt-based and command-line hooks.

This skill provides comprehensive guidance for extending Claude Code's capabilities through event-driven hooks. It enables developers to enforce security policies, validate tool inputs using LLM reasoning, automate project context loading during session startup, and monitor tool outputs. Whether implementing prompt-based validation for safe file writing or bash-driven scripts for CI/CD integration, this skill ensures robust, portable, and secure plugin development across the entire development lifecycle by leveraging the full Hook API.

주요 기능

01Support for lifecycle events including PreToolUse, Stop, and SessionStart

02Environment variable management for persistent session context

03Prompt-based validation for context-aware tool oversight

041 GitHub stars

05Command-based hooks for deterministic bash script execution

06Regex-based tool matching for granular control over hook execution

사용 사례

01Enforcing security policies by blocking dangerous commands or sensitive file access

02Validating code quality and completeness before allowing the AI to finish a task

03Automating project setup by loading specific context and environment variables on session start

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add pur3v4d3r/pur3-pkb-codebase hook-development

For use in Claude.ai and ChatGPT

Download Skill