How do I block Claude from writing bad code?

By using exit code 2 in your hook script, you can block the current action and send the error output back to Claude so it can fix the issue automatically.

Where should I store my hook configurations?

Hooks should be configured in the .claude/settings.json file to ensure they are shared with your team via version control, rather than settings.local.json.

What is a Claude Code hook?

A hook is a specialized script that runs during specific events, such as before or after a tool is used, to validate, modify, or block Claude's actions based on predefined rules.

Are these hooks cross-platform?

Yes, by wrapping shell commands in Python scripts as recommended by this skill, hooks remain compatible across different operating systems like macOS, Linux, and Windows.

Will running hooks slow down my development process?

This skill follows the 'Fast checks only' principle, recommending that hooks run in under 5 seconds to maintain a smooth and responsive developer experience.

Static Analysis & Quality Hooks

Name: Static Analysis & Quality Hooks
Author: wayne930242

bywayne930242

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Developer Tools

Automates the creation of Claude Code hooks for real-time linting, formatting, and type-checking during the development process.

The write-hook skill empowers developers to establish robust quality gates within their Claude Code workflow by generating custom, Python-based hooks. It provides a standardized framework for enforcing project-specific coding standards—such as ESLint, Prettier, and TypeScript checks—ensuring that AI-generated code meets production requirements before it is finalized. By leveraging blocking exit codes and structured JSON communication, this skill allows for seamless integration of static analysis tools, preventing regressions and maintaining high-quality codebases through automated validation and auto-fixing capabilities.

Key Features

01Automated generation of linting, formatting, and type-checking hooks

02Version-controlled configuration for team-wide consistency via settings.json

03Strict quality enforcement using blocking exit codes to prevent bad writes

04Cross-platform Python wrapper for shell-based quality tools

056 GitHub stars

06Pre-configured templates for industry-standard tools like ESLint and Prettier

Use Cases

01Preventing Claude from writing code that violates ESLint or Ruff rules

02Blocking TypeScript errors by running real-time type checks during the agentic loop

03Automatically applying Prettier formatting after every Claude code modification

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add wayne930242/reflexive-claude-code write-hook

For use in Claude.ai and ChatGPT

Download Skill