Can hooks prevent Claude from executing a command?

Yes, blocking hooks like PreToolUse can evaluate a proposed action and return a 'block' decision to stop the command from executing if it doesn't meet safety or logic requirements.

Where are hook configurations saved?

Hook configurations are defined in a JSON file located at .claude/hooks.json for project-specific automation or ~/.claude/hooks.json for global user-level automation.

How do I test if my hooks are working correctly?

You can debug your hooks by running Claude with the --debug flag, which displays detailed information about matched events, command execution, and hook outputs.

What are Claude Code hooks?

Hooks are event-driven scripts or LLM prompts that execute automatically in response to specific events within Claude Code, such as tool usage, session starts, or user submissions.

What is the difference between a command hook and a prompt hook?

Command hooks execute standard shell scripts for tasks like logging or file manipulation, while prompt hooks use an LLM to evaluate complex, natural language conditions.

Claude Code Hooks Architect

Name: Claude Code Hooks Architect
Author: shishiv

byshishiv

生産性とワークフロー

Automates developer workflows by configuring event-driven hooks for command validation, logging, and custom notifications within Claude Code.

概要

This skill provides expert guidance for implementing and managing Claude Code hooks, allowing you to programmatically control AI behavior through shell commands and LLM-evaluated prompts. It enables developers to build custom safety layers, automate repetitive post-task actions like linting, and inject project-specific context into sessions. By mastering hook events like PreToolUse and SessionStart, you can create a highly tailored and secure development environment that responds dynamically to Claude's actions without manual intervention.

主な機能

Event-driven automation for tool execution and session lifecycle events
Support for both shell-based command hooks and LLM-powered prompt hooks
Context injection capabilities for project-specific session initialization
Blocking logic to prevent destructive operations or enforce safety protocols
Advanced tool filtering using regex-based matchers for precise control
0 GitHub stars

ユースケース

Preventing destructive Git or file system commands via automated validation
Automatically running code formatters or linters immediately after Claude edits a file
Triggering desktop notifications or external alerts when Claude requires user input

概要

主な機能

Event-driven automation for tool execution and session lifecycle events
Support for both shell-based command hooks and LLM-powered prompt hooks
Context injection capabilities for project-specific session initialization
Blocking logic to prevent destructive operations or enforce safety protocols
Advanced tool filtering using regex-based matchers for precise control
0 GitHub stars

ユースケース

Preventing destructive Git or file system commands via automated validation
Automatically running code formatters or linters immediately after Claude edits a file
Triggering desktop notifications or external alerts when Claude requires user input