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Hook Development

Build event-driven automation for Claude Code plugins with prompt-based and command hooks.

5.1k|414|Updated Jan 27, 2026
Search Tags:#automation#security#validation#hooks#Claude Code#plugin#event-driven
One-click install
npx skills add https://github.com/Galaxy-Dawn/claude-scholar --skill hook-development-galaxy-dawn
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Hook Development
Source: https://github.com/Galaxy-Dawn/claude-scholar/tree/main/skills/hook-development
Command: npx skills add https://github.com/Galaxy-Dawn/claude-scholar --skill hook-development-galaxy-dawn

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

Hooks enable developers to automate and enforce policies around Claude Code events, reducing manual overhead and guarding sensitive actions.

Core Features & Use Cases

  • Event-driven automation: validate operations, enforce standards, load project context, and orchestrate tooling across the development lifecycle.
  • Flexible hook types: use prompt-based hooks for reasoning and command hooks for fast, deterministic checks.
  • Real-world scenarios: automatically block dangerous tool usage, inject context at session start, and log actions for audit trails.

Quick Start

  • Add a new PreToolUse or SessionStart hook in your hooks.json to start automating validation and context loading.
  • Create a small prompt-based hook that analyzes a command using $TOOL_INPUT and returns a decision.
  • Place supporting scripts under scripts/ and reference them in the hook configuration.

Frequently Asked Questions about Hook Development

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

FAQPage Schema
How do I automate validation checks for Claude Code events?▼

Automate Claude Code validation by configuring PreToolUse or SessionStart hooks in hooks.json to intercept events, run validation scripts, and return decisions based on tool inputs.

Can I block dangerous tool usage automatically in Claude Code?▼

Block dangerous tool usage by creating a PreToolUse hook that analyzes $TOOL_INPUT and returns a decision to prevent the operation, enforcing safety policies automatically.

What is the difference between prompt-based and command hooks for event-driven automation?▼

Prompt-based hooks handle complex reasoning tasks, while command hooks execute fast, deterministic checks. Both support event-driven automation for validation, policy enforcement, and tool integration.

How do I inject project context when a Claude Code session starts?▼

Inject project context at session start by adding a SessionStart hook to hooks.json, which automatically loads the required environment data when the session initializes.

Do I need external tooling dependencies to build Claude Code hooks?▼

No mandatory external tooling is required for basic use. You can build event-driven automation using prompt-based and command hooks, placing supporting scripts under your scripts/ directory.

How do I log Claude Code actions for audit trails?▼

Log Claude Code actions for audit trails by configuring event-driven hooks to record tool usage and operations, automatically capturing execution data without manual overhead.

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