code-review

code-review is a skill for Claude Code from forest6511/claude-code-recipes-v2. It costs 51 tokens per session (427 once invoked), scanned A, original, MIT.

A general code review for staged changes or specified files. It checks correctness, security, performance, readability, and whether new logic has suitable tests.

In plain words
What is it for?
Reviewing a change set and reporting each issue with its file, line number, severity, problem, and suggested correction.
Why use it?
It helps catch bugs, unsafe behavior, slow code, unclear structure, and missing tests before a change is merged. Problems are ranked from Critical to Low.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: agent in frontmatter.

Good fit Reviewing a change set and reporting each issue with its file, line number, severity, problem, and suggested correction.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/forest6511/claude-code-recipes-v2/code-review
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 forest6511/claude-code-recipes-v2 --skill code-review
Clone the repo
git clone --depth 1 https://github.com/forest6511/claude-code-recipes-v2

Made for: Claude Code.

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 code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/forest6511/claude-code-recipes-v2/code-review/github.svg)](https://agentmods.dev/skills/forest6511/claude-code-recipes-v2/code-review)
Your own site
<a href="https://agentmods.dev/skills/forest6511/claude-code-recipes-v2/code-review"><img src="https://agentmods.dev/badge/skills/forest6511/claude-code-recipes-v2/code-review/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 code-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/forest6511/claude-code-recipes-v2/code-review"><img src="https://agentmods.dev/badge/skills/forest6511/claude-code-recipes-v2/code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 427 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 $0.00051 $0.00427
Opus 5.5 $0.00020 $0.00171
Sonnet 5.5 $0.00010 $0.00085
Haiku 4.5 $0.00005 $0.00043

Measured 1mo ago against content hash c136a7862153, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-review 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 1mo 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-40/.claude/skills/code-review/SKILL.md · 29 lines

What it actually says

以下の対象に対してコードレビューを実施してください。

対象: $ARGUMENTS(未指定の場合は git diff --staged の差分全体)

レビュー観点

  1. 正確性: ロジックエラー、エッジケース、null/undefined の扱い
  2. セキュリティ: 入力検証、認可、機密情報のハードコード、SQL/コマンドインジェクション
  3. パフォーマンス: N+1 クエリ、O(n²) 以上の探索、不要な再計算
  4. 可読性: 命名、関数長、責務分離、コメントの過不足
  5. テスト: 新規ロジックに対するテストの有無

重要度区分

  • Critical: 本番で動作不能/セキュリティ事故レベル。マージ前の修正必須
  • High: 動作はするが想定外動作やパフォーマンス劣化が出る
  • Medium: 改善余地あり、別 PR に切り出してもよい
  • Low: スタイル・命名の提案、任意

出力形式

重要度順に「ファイル:行番号 → 問題 → 推奨修正」の3点セットで列挙してください。 最後に Critical/High の合計件数を1行サマリで報告してください。

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. 1mo ago First seen · 29 lines · 51 tokens per session scan A c136a7862153

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository forest6511/claude-code-recipes-v2 (6 stars, last pushed 5mo ago), licensed MIT. It adds 51 tokens to every session and 427 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 2026-08-31.

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