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LeighAtkins
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Hook Development

Create Claude Code plugin hooks for event-driven validation and scripting.

Updated Apr 10, 2025
Search Tags:#automation#validation#claude code#hooks#plugins#event-driven
One-click install
npx skills add https://github.com/LeighAtkins/OpenPaint --skill hook-development-leighatkins
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Hook Development
Source: https://github.com/LeighAtkins/OpenPaint/tree/main/.claude/plugins/plugin-dev/skills/hook-development
Command: npx skills add https://github.com/LeighAtkins/OpenPaint --skill hook-development-leighatkins

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill empowers users to automate complex workflows within Claude Code by defining custom event-driven hooks, ensuring robust validation, seamless integrations, and enhanced control over AI agent behavior.

Core Features & Use Cases

  • Event-Driven Automation: Execute custom logic in response to specific Claude Code events (e.g., tool use, prompt submission, session start/end).
  • Advanced Validation: Implement sophisticated pre-execution checks for tool calls and post-execution analysis of results.
  • Use Case: Automatically validate that all unit tests pass before allowing Claude Code to stop a session, or ensure sensitive file operations are approved by the user.

Quick Start

Configure a PreToolUse hook to validate file write operations using a prompt-based check.

Frequently Asked Questions about Hook Development

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

FAQPage Schema
How do I automate Claude Code workflows with custom event-driven hooks?▼

You can automate Claude Code workflows by defining custom event-driven hooks that execute logic for specific events like PreToolUse, PostToolUse, Stop, SessionStart, and UserPromptSubmit. This enables robust validation and seamless scripting integrations.

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

Prompt-based hooks provide context-aware validation using AI reasoning, while deterministic command hooks execute fixed scripting integrations. Both hook types support event-driven automation for Claude Code sessions.

Can I run validation checks before Claude Code executes a tool?▼

Yes, you can configure a PreToolUse hook to implement advanced pre-execution checks for tool calls. This allows you to validate file write operations or ensure sensitive file operations are approved before execution.

How do I prevent Claude Code from stopping a session if unit tests fail?▼

You can use a Stop hook to automatically validate that all unit tests pass before allowing Claude Code to stop a session. This ensures code quality checks are completed before the session ends.

What security best practices should I follow when creating Claude Code plugins?▼

When creating Claude Code plugins, you should follow security best practices by validating sensitive file operations, implementing pre-execution checks, and controlling AI agent behavior through event-driven hook configurations.

Does Claude Code hook development support post-execution analysis of tool results?▼

Yes, PostToolUse hooks support post-execution analysis of results. This event type allows you to execute custom logic immediately after a Claude Code tool completes its operation.

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