Browse / Productivity Workflow / Hook Development

Hook Development

Guides the creation and implementation of event-driven automation hooks for Claude Code plugins.

SkillProductivity WorkflowAutomationSkill Authoring

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Key features

  • Includes security best practices for input validation and path safety.
  • Guidance for all hook events (PreToolUse, PostToolUse, Stop, SessionStart, etc.).
  • Covers JSON configuration for both plugin-specific (`hooks.json`) and user settings.
  • Explains use of environment variables like `${CLAUDE_PLUGIN_ROOT}` for portable scripts.
  • Detailed implementation patterns for both prompt-based and command-based hooks.

Use cases

  • Validate tool calls before execution to block potentially dangerous commands.
  • Automatically load project context or set environment variables at the start of a session.
  • Enforce task completion standards by verifying tests passed before Claude stops.

FAQ

What does the Hook Development skill do?

It provides comprehensive guidance for creating and implementing event-driven automation hooks for Claude Code plugins. These hooks allow you to customize and control Claude's behavior at key points in its workflow, such as before a tool runs or when a session starts.

What capabilities does the Hook Development skill provide?

It provides guidance for all hook events (PreToolUse, PostToolUse, Stop, etc.), detailed patterns for both LLM-powered prompt hooks and script-based command hooks, JSON configuration examples, and security best practices for creating safe, portable automation.

How does this skill improve my workflow?

It automates repetitive checks and processes. For example, you can create a `PreToolUse` hook to automatically block dangerous file writes or a `Stop` hook to ensure all tests pass before Claude finishes a task, improving code quality and security.

When should I use this skill?

Use this skill when you need to validate operations, enforce coding policies, add custom context to a session, or integrate external tools. It's essential for building robust and secure Claude Code plugins with customized workflows.