refactor

refactor is a skill for Claude Code, Codex from lhfer/claude-howto-zh-cn. It costs 41 tokens per session (215 once invoked), scanned A, original, MIT.

A code-refactoring guide based on Martin Fowler’s methods. Refactoring means changing a program’s internal structure while keeping its outward behavior the same.

In plain words
What is it for?
Use it to assess test coverage, find code smells, plan small refactoring steps, preserve behavior, and verify each change.
Why use it?
It provides a careful way to reduce technical debt and improve maintainability without changing what the software does.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to assess test coverage, find code smells, plan small refactoring steps, preserve behavior, and verify each change.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lhfer/claude-howto-zh-cn/refactor
About the project

Claude Code 中文全面上手指南 is a Chinese-language learning guide for using Claude Code and combining features such as commands, memory, skills, hooks, MCP, subagents, and plugins. It is aimed at Chinese beginners and provides learning paths, examples, and compatibility guidance, while the catalogue entries package parts of that guidance as agent resources.

lhfer/claude-howto-zh-cn · 2,320 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add lhfer/claude-howto-zh-cn --skill refactor
Clone the repo
git clone --depth 1 https://github.com/lhfer/claude-howto-zh-cn

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for refactor

README.md
[![agentmods](https://agentmods.dev/badge/skills/lhfer/claude-howto-zh-cn/refactor/github.svg)](https://agentmods.dev/skills/lhfer/claude-howto-zh-cn/refactor)
Your own site
<a href="https://agentmods.dev/skills/lhfer/claude-howto-zh-cn/refactor"><img src="https://agentmods.dev/badge/skills/lhfer/claude-howto-zh-cn/refactor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for refactor

Your own site · 80×15
<a href="https://agentmods.dev/skills/lhfer/claude-howto-zh-cn/refactor"><img src="https://agentmods.dev/badge/skills/lhfer/claude-howto-zh-cn/refactor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 215 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.00215
Opus 5.5 $0.00016 $0.00086
Sonnet 5.5 $0.00008 $0.00043
Haiku 4.5 $0.00004 $0.00021

Measured 2mo ago against content hash 82e502de379a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

refactor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/analyze-complexity.py, scripts/detect-smells.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

03-skills/refactor/SKILL.md · 37 lines

What it actually says

Code Refactoring Skill / 重构技能

这个 skill 用于安全、渐进式地做重构,重点强调:

  • 外部行为不变
  • 小步迭代
  • 测试先行
  • 每个阶段都可回退

工作流概览

  1. Research & Analysis
  2. Test Coverage Assessment
  3. Code Smell Identification
  4. Refactoring Plan Creation
  5. Incremental Implementation
  6. Review & Iteration

核心原则

  1. Behavior Preservation
  2. Small Steps
  3. Test-Driven
  4. Continuous
  5. Collaborative

输出要求

  • 先说明问题和目标
  • 再给分阶段计划
  • 每步都说明风险和验证方式
Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 37 lines · 41 tokens per session scan A 82e502de379a

Subscribe to this mod's changes

refactor is a skill published in the GitHub repository lhfer/claude-howto-zh-cn (2,320 stars, last pushed 3mo ago), licensed MIT. It adds 41 tokens to every session and 215 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

refactor compared with skills from other repositories

refactor next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
refactorlhfer/claude-howto-zh-cnSkill2.3k3mo agoMITA41Claude Code, Codex
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143ktodayMITA103Claude Code