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Invictusprime7
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Hook Development

Develop event-driven hooks for Claude Code to validate tool usage.

1|Updated Oct 14, 2025
Search Tags:#automation#testing#security#plugin#claude-code#hook-development
One-click install
npx skills add https://github.com/Invictusprime7/unison-tasks-official --skill hook-development-invictusprime7
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Hook Development
Source: https://github.com/Invictusprime7/unison-tasks-official/tree/main/claude-code-main/plugins/plugin-dev/skills/hook-development
Command: npx skills add https://github.com/Invictusprime7/unison-tasks-official --skill hook-development-invictusprime7

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

Hooks are essential to safely orchestrate Claude Code actions in automated workflows. This skill provides a framework and guidance to design, implement, and validate event-driven hooks that enforce policies, automate responses, and integrate external tools.

Core Features & Use Cases

  • Comprehensive guidance on PreToolUse, PostToolUse, Stop, SessionStart, and related events.
  • Prompt-based and command-based hook options with best practices, security considerations, and debugging patterns.
  • Example configurations, patterns, and reference implementations to accelerate plugin development for Claude Code.

Quick Start

Create a plugin hook that validates PreToolUse calls using a prompt-based approach and returns a standardized decision.

Frequently Asked Questions about Hook Development

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create Claude Code hooks for automating tool validation in pipelines?▼

Claude Code hooks are event-driven scripts that validate and marshal tool usage within automation pipelines. They intercept events like PreToolUse, PostToolUse, and SessionStart to enforce policies, automate responses, and integrate external tools safely.

What is the difference between prompt-based and command-based Claude Code hooks?▼

Prompt-based and command-based Claude Code hooks differ in execution logic: prompt hooks evaluate instructions to return decisions, while command hooks execute scripts. Both require structured JSON outputs, robust error handling, and portable paths via ${CLAUDE_PLUGIN_ROOT} for reliable plugin automation.

How do I debug PreToolUse and PostToolUse hooks in Claude Code plugins?▼

To debug PreToolUse and PostToolUse hooks, use the provided debugging workflows and reference implementations to trace event execution. Validate that your hooks return structured JSON outputs, enforce timeouts, and handle errors robustly to prevent pipeline failures during automation.

Can I use Claude Code hooks to enforce security policies in automated workflows?▼

Claude Code hooks enforce security policies by validating tool usage before execution. By configuring PreToolUse events with structured JSON outputs and timeouts, you can block unauthorized actions and ensure robust error handling in your automation pipelines.

Why do my Claude Code automation hooks fail due to path or timeout issues?▼

Claude Code automation hooks fail due to path or timeout issues when not using portable paths like ${CLAUDE_PLUGIN_ROOT} or configuring proper timeouts. Enforce structured JSON outputs and robust error handling practices to prevent pipeline failures.

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