refactoring

refactoring is a skill for Claude Code, Codex from rungchan2/frontend-skills. It costs 97 tokens per session (1,577 once invoked), scanned A, original, Apache-2.0.

A guide for reviewing and reorganising CLAUDE.md, the project instruction file used by Claude Code. It covers structure, important development rules, common mistakes, and keeping the file concise.

In plain words
What is it for?
Use it to create, review, or refactor CLAUDE.md files and improve their project rules, architecture notes, and examples.
Why use it?
It helps make project guidance easier for an agent to find and follow, while removing duplication and unclear instructions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions CLAUDE.md; mentions Claude Code.

Good fit Use it to create, review, or refactor CLAUDE.md files and improve their project rules, architecture notes, and examples.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rungchan2/frontend-skills/refactoring
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 rungchan2/frontend-skills --skill refactoring
Clone the repo
git clone --depth 1 https://github.com/rungchan2/frontend-skills

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 refactoring

README.md
[![agentmods](https://agentmods.dev/badge/skills/rungchan2/frontend-skills/refactoring/github.svg)](https://agentmods.dev/skills/rungchan2/frontend-skills/refactoring)
Your own site
<a href="https://agentmods.dev/skills/rungchan2/frontend-skills/refactoring"><img src="https://agentmods.dev/badge/skills/rungchan2/frontend-skills/refactoring/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 refactoring

Your own site · 80×15
<a href="https://agentmods.dev/skills/rungchan2/frontend-skills/refactoring"><img src="https://agentmods.dev/badge/skills/rungchan2/frontend-skills/refactoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,577 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.
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 $0.00097 $0.01577
Opus 5 $0.00048 $0.00788
Sonnet 5 $0.00019 $0.00315
Haiku 4.5 $0.00010 $0.00158

Measured 8d ago against content hash d61f7b4e52c8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

refactoring 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 8d ago.

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.

skills/claudemd/skills/refactoring/SKILL.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md Refactoring Skill

CLAUDE.md 파일 분석, 구조화, 최적화를 통해 Claude Code의 프로젝트 이해도와 작업 효율성을 극대화합니다.

Workflow Decision Tree

사용자 요청 분석
├─ 새 CLAUDE.md 작성
│   └─ 템플릿 기반 생성 → references/template.md 참조
├─ 기존 CLAUDE.md 리팩토링
│   ├─ 1단계: 현재 파일 분석
│   ├─ 2단계: 문제점 식별
│   ├─ 3단계: 구조 재설계
│   └─ 4단계: 컨텍스트 최적화
└─ CLAUDE.md 검토/평가
    └─ 품질 메트릭 기반 분석

Step 1: 분석 (Analysis)

현재 CLAUDE.md 평가 체크리스트

□ 필수 섹션 포함 여부
  - [ ] Header (프로젝트명 + 설명)
  - [ ] Technical Stack & Conventions
  - [ ] Path Aliases
  - [ ] Critical Development Rules
  - [ ] NOT TO DOs

□ 컨텍스트 효율성
  - [ ] 토큰 예산 효율적 사용
  - [ ] 중복 정보 없음
  - [ ] 코드 예제 > 장황한 설명

□ 오류 방지 패턴
  - [ ] ✅/❌ 패턴 사용
  - [ ] Common Mistakes 테이블
  - [ ] 구체적 필드명/경로명

□ 아키텍처 문서화
  - [ ] 레이어 구조 다이어그램
  - [ ] Forbidden Patterns
  - [ ] 파일/디렉토리 구조

문제점 식별 패턴

문제 유형 증상 해결책
정보 부족 Claude가 스키마/타입을 자주 물어봄 Database Schema 섹션 추가
모호한 규칙 같은 실수 반복 ✅/❌ 코드 예제로 구체화
과도한 정보 토큰 낭비, 핵심 놓침 테이블/코드로 압축
구조 혼란 필요 정보 찾기 어려움 섹션 재구성, 목차 추가

Step 2: 구조화 (Structure)

필수 섹션 순서

  1. Header - 프로젝트명 + 1-2문장 설명
  2. Technical Stack & Conventions - 프레임워크, UI, 상태관리
  3. Path Aliases - @/ 경로 매핑
  4. Database Schema Overview - 테이블 요약 + 주의사항
  5. Critical Development Rules - ✅/❌ 패턴
  6. Architecture Patterns - 레이어 다이어그램
  7. Workflow Notes - 작업 전 체크리스트
  8. NOT TO DOs - 금지 사항 목록
  9. Reference Documentation - 상세 문서 링크

상세 가이드


Step 3: 최적화 (Optimization)

컨텍스트 압축 기법

Before (72 tokens):

When you need to get students from the database, you should always use the service layer functions that are located in the /lib/services directory. Never import the Supabase client directly into your components.

After (28 tokens):

### Data Access - Use Service Layer

// ✅ CORRECT
import { getStudents } from '@/lib/services/students'

// ❌ WRONG
import { createClient } from '@/lib/supabase/client'

Read the full file on GitHub · 181 lines

Files

What ships with it

4 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. 8d ago First seen · 181 lines · 97 tokens per session scan A d61f7b4e52c8

Subscribe to this mod's changes

refactoring is a skill published in the GitHub repository rungchan2/frontend-skills (2 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 97 tokens to every session and 1,577 once invoked, about $0.0005 per session on Opus 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 2026-08-31.

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