hook-development

Develop hooks to validate and respond to Claude Code tool usage events.

5|1|Updated Jan 14, 2026
One-click install
npx skills add https://github.com/ValorVie/custom-skills --skill hook-development-valorvie
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: hook-development
Source: https://github.com/ValorVie/custom-skills/tree/main/.agents/skills/hook-development
Command: npx skills add https://github.com/ValorVie/custom-skills --skill hook-development-valorvie

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

Hook development addresses the need to automate event-driven automation in Claude Code plugins, enabling validation, policy enforcement, and context-driven responses without manual scripting.

Core Features & Use Cases

  • Supports PreToolUse, PostToolUse, SessionStart, Stop, SubagentStop and other events with both prompt-based and command hooks.
  • Enables policy enforcement, context loading, auditing, and automated responses across projects and tool integrations.
  • Example use case: automatically block dangerous tool usage, auto-load project context at session start, and route outputs to downstream tools for visibility.

Quick Start

Create and configure prompt-based and command hooks to automatically validate and respond to Claude Code tool events during plugin development.

Frequently Asked Questions about hook-development

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

FAQPage Schema
How do I automate event-driven behavior in Claude Code plugins?▼

You can automate event-driven behavior by developing hooks that validate, transform, and respond to tool usage events. This involves configuring prompt-based or command hooks for lifecycle events like PreToolUse and PostToolUse.

Can I block dangerous tool usage automatically during a Claude Code session?▼

Yes, blocking dangerous tool usage is possible by configuring PreToolUse hooks. These hooks validate tool events and enforce policies to automatically prevent risky actions before they execute.

How do I auto-load project context when starting a Claude Code session?▼

To auto-load project context, you configure SessionStart hooks. These event-driven hooks trigger automatically when a session begins, injecting necessary context without manual intervention.

Does Claude Code hook development support configurable timeouts?▼

Yes, Claude Code hook development supports configurable timeouts for event-driven automation. This ensures prompt-based and command hooks execute reliably without hanging the plugin indefinitely.

What is the best way to ensure my Claude Code hooks are portable across projects?▼

The best way to ensure portability is using the ${CLAUDE_PLUGIN_ROOT} variable in your command hooks. This references the plugin directory dynamically, allowing event-driven scripts to run reliably in various project contexts.

How do I provide structured output from Claude Code command hooks?▼

You provide structured output by returning JSON from your command hooks. This structured JSON format allows Claude Code to reliably parse validation results and automated responses from tool usage events.