refactor

refactor is a skill for Claude Code, Codex from forest6511/claude-code-recipes-v2. It costs 55 tokens per session (502 once invoked), scanned A, original, MIT.

A code-cleanup helper that improves a program's internal structure without changing what it does. Refactoring includes tasks such as extracting functions, removing duplication, and simplifying conditions.

In plain words
What is it for?
Use it to plan and perform one small refactoring at a time, running the tests after each change.
Why use it?
It helps make code easier to read and maintain while requiring its existing behavior to stay the same.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/forest6511/claude-code-recipes-v2/refactor
Any agent
npx skills add forest6511/claude-code-recipes-v2 --skill refactor
Clone the repo
git clone --depth 1 https://github.com/forest6511/claude-code-recipes-v2

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/forest6511/claude-code-recipes-v2/refactor.svg)](https://agentmods.dev/skills/forest6511/claude-code-recipes-v2/refactor)
Your own site
<a href="https://agentmods.dev/skills/forest6511/claude-code-recipes-v2/refactor"><img src="https://agentmods.dev/badge/skills/forest6511/claude-code-recipes-v2/refactor.svg" alt="Measured on agentmods" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 502 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00055 $0.00502
Opus 5 $0.00028 $0.00251
Sonnet 5 $0.00011 $0.00100
Haiku 4.5 $0.00006 $0.00050

Measured 4d ago against content hash eafbf7cb4776, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 4d 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.

ch08-skills-templates/recipe-42/.claude/skills/refactor/SKILL.md · 29 lines

What it actually says

対象: $ARGUMENTS

適用していいリファクタパターン

  1. 関数の抽出: 長い関数の一部を切り出して別関数にする
  2. 変数の改名: 命名を意図に合わせる (auserIndex)
  3. 重複の除去: 同じロジックを共通関数に集約
  4. 条件式の簡略化: ネスト深い if を早期リターンに、複雑な条件を変数に切り出す
  5. マジックナンバー定数化: 0.08TAX_RATE に、60SECONDS_PER_MINUTE
  6. デッドコード削除: 呼び出されていない関数・到達しないコードの除去

厳守ルール

  • 振る舞いを変える変更(バグ修正、機能追加、API シグネチャ変更)は行わない
  • 1リファクタ = 1コミット粒度。複数パターンを混ぜない
  • 各リファクタ後にテストを実行し、全テストが通ったことを確認してから次へ

進め方

  1. 対象を読み、適用候補のリファクタパターンを5件まで列挙
  2. パターン1つに絞ってユーザーに確認
  3. リファクタを実行 → テスト実行 → 結果報告
  4. 次のパターンに進むか、ここで完了かをユーザーに確認
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. 4d ago First seen · 29 lines · 55 tokens per session scan A eafbf7cb4776

Subscribe to this mod's changes

refactor is a skill published in the GitHub repository forest6511/claude-code-recipes-v2 (5 stars, last pushed 4mo ago), licensed MIT. It adds 55 tokens to every session and 502 once invoked, about $0.0003 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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