Zen

Refactor and review code for readability and maintainability.

68|14|Updated Jan 7, 2026

Search Tags:#code quality #code review #refactoring #clean code #readability #maintainability

Ready to run

npx skills add https://github.com/simota/agent-skills --skill zen

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: Zen
Source: https://github.com/simota/agent-skills/tree/main/zen
Command: npx skills add https://github.com/simota/agent-skills --skill zen

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses code that is difficult to read, maintain, or understand by performing behavior-preserving refactorings and code reviews.

Core Features & Use Cases

Readability Improvements: Renames variables and functions for clarity.
Code Structure: Extracts long methods into smaller, focused functions.
Maintainability: Removes dead code and standardizes patterns.
Use Case: When a complex function is hard to follow, use Zen to break it down into smaller, well-named parts, making the logic easier to grasp and modify.

Quick Start

Use Zen to refactor the 'calculateTotal' function for better readability.

Frequently Asked Questions about Zen

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

FAQPage Schema

How do I refactor code to improve readability without changing its behavior?▼

To refactor code for readability without altering behavior, you can rename unclear variables, extract long methods into focused functions, and remove dead code. This behavior-preserving process improves code maintainability and structure.

What is the best way to remove magic numbers and dead code from a complex function?▼

The best way to remove magic numbers and dead code is through a structured refactoring workflow that surveys, plans, applies, verifies, and presents changes. This standardizes patterns and breaks down complex logic into smaller, manageable parts.

How does code review integrate with refactoring for project-wide maintainability?▼

Code review integrates with refactoring by operating across defined scope tiers like Focused, Module, and Project-wide. This workflow evaluates code quality comprehensively, ensuring maintainability improvements are verified before presentation.

Can I use automated refactoring for module-level code structure improvements?▼

Yes, you can use automated refactoring for module-level code structure improvements. It operates within defined scope tiers, allowing you to extract long methods and rename functions across an entire module without breaking existing behavior.

When should I extract methods from a long function during code review?▼

You should extract methods from a long function during code review when the logic becomes hard to follow. Breaking it down into smaller, well-named parts makes the code easier to grasp, modify, and maintain over time.