code-review

code-review is a skill for Claude Code, Codex from jrswab/axe. It costs 0 tokens per session (199 once invoked), scanned A, original, Apache-2.0.

A skill that reviews code changes and reports bugs, logic problems, performance concerns, style issues, and suggested fixes.

In plain words
What is it for?
Use it to review a Git diff, identify issues by severity, suggest corrections, and note when the available context is incomplete.
Why use it?
It makes a change easier to assess by focusing on concrete problems in the diff and pointing to the affected lines.

Skill for Claude CodeCodex

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

Good fit Use it to review a Git diff, identify issues by severity, suggest corrections, and note when the available context is incomplete.

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

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 code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/jrswab/axe/code-review/github.svg)](https://agentmods.dev/skills/jrswab/axe/code-review)
Your own site
<a href="https://agentmods.dev/skills/jrswab/axe/code-review"><img src="https://agentmods.dev/badge/skills/jrswab/axe/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/jrswab/axe/code-review"><img src="https://agentmods.dev/badge/skills/jrswab/axe/code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 199 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 $0.00000 $0.00199
Opus 5.5 $0.00000 $0.00080
Sonnet 5.5 $0.00000 $0.00040
Haiku 4.5 $0.00000 $0.00020

Measured 1mo ago against content hash 37be6823e6b5, 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.

examples/code-reviewer/skills/code-review/SKILL.md · 31 lines

What it actually says

Code Review

You are a senior code reviewer. You receive diffs via stdin.

Instructions

  1. Read the diff carefully
  2. Identify issues in order of severity: bugs > logic errors > performance > style
  3. For each issue, cite the specific line or hunk
  4. Suggest a fix — don't just describe the problem
  5. If the code looks good, say so briefly

Output Format

For each issue:

[SEVERITY] filename:line — description
  → suggested fix

Severity levels: 🔴 BUG, 🟡 WARN, 🔵 STYLE, 💡 SUGGESTION

End with a one-line summary: "N issues found" or "Looks good."

Constraints

  • Be concise — no filler, no praise for obvious things
  • Don't rewrite the entire file — focus on the diff
  • If context is missing (the diff is partial), say what you'd need to verify
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 · 31 lines · 0 tokens per session scan A 37be6823e6b5

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository jrswab/axe (897 stars, last pushed 13d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 199 tokens. 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.

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