Hook Development

Define and enforce Claude Code tool usage through event-driven hooks.

1|Updated Mar 20, 2026
One-click install
npx skills add https://github.com/stericishere/skills --skill hook-development-stericishere
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: Hook Development
Source: https://github.com/stericishere/skills/tree/main/hook-development
Command: npx skills add https://github.com/stericishere/skills --skill hook-development-stericishere

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

Hook Development provides a structured approach to creating and managing Claude Code hooks that validate tool usage, enforce policies, and automate workflows, reducing risk and manual labor.

Core Features & Use Cases

  • Event-driven hooks for PreToolUse, PostToolUse, SessionStart, Stop, SubagentStop, etc., enabling validation, response, and context loading.
  • Supports both prompt-based and command-based hooks; uses hooks.json at plugin level or settings.json to configure behavior; includes guidance for integrating with scripts under scripts/, references/, assets/ as needed.
  • Real-world use: automatically block dangerous tool calls, log results, load project context on session start, and coordinate across events to maintain policy compliance.

Quick Start

Configure hooks.json and place scripts under scripts/ to define and enforce your Claude Code hooks.

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 to validate and block dangerous tool calls?

Claude Code hooks validate tool usage by defining event-driven configurations in hooks.json. You can use PreToolUse events to automatically block dangerous tool calls and enforce safety policies during automation pipelines.

Can I use Claude Code hooks to load project context automatically on session start?

Yes, Claude Code hooks support SessionStart events to load project context automatically. You configure these event-driven hooks in hooks.json or settings.json to automate context loading when a session begins.

What events are supported when defining event-driven hooks for Claude Code?

Claude Code hooks support PreToolUse, PostToolUse, SessionStart, Stop, SubagentStop, SessionEnd, PreCompact, and Notification events. These events enable validation, response, and context loading across plugin workflows.

Do I need jq to configure Claude Code hooks?

Yes, jq is required as a dependency for Hook Development. You need jq installed in your environment to process JSON data and execute command-based hooks within your automation pipelines.

How do I set up prompt-based and command-based hooks for Claude Code?

Prompt-based and command-based hooks are configured by defining behavior in hooks.json or settings.json. You place executable scripts under the scripts/ directory and reference them within the configuration to enforce policies.

Why use Claude Code hooks instead of manual validation for plugin development workflows?

Claude Code hooks provide a structured approach to enforce policies and automate workflows, reducing manual labor and risk. They coordinate across events to maintain compliance automatically, unlike manual validation which is error-prone.