code-review

code-review is a skill for Claude Code, Codex from fabioc-aloha/Alex_Skill_Mall. It costs 19 tokens per session (2,007 once invoked), scanned A, original, MIT.

A systematic review method that checks code for correctness, security, maintainability, performance, and style.

In plain words
What is it for?
Use it for pull requests, code changes, and reviews where bugs, security issues, or future maintenance problems need attention.
Why use it?
It gives reviewers a repeatable way to catch edge cases and risky changes while explaining findings clearly to the author.

Skill for Claude CodeCodex

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

Good fit Use it for pull requests, code changes, and reviews where bugs, security issues, or future maintenance problems need attention.

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

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/fabioc-aloha/alex_skill_mall/code-review/github.svg)](https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/code-review)
Your own site
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/code-review"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/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/fabioc-aloha/alex_skill_mall/code-review"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,007 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 $0.00019 $0.02007
Opus 5 $0.00010 $0.01004
Sonnet 5 $0.00004 $0.00401
Haiku 4.5 $0.00002 $0.00201

Measured 6d ago against content hash 615ec9874c58, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 6d 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.

plugins/code-quality/code-review/skills/code-review/SKILL.md · 196 lines

How it starts

The opening of the file, as written. The whole thing — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Review Skill

Good reviews catch bugs. Great reviews teach the author something.

Review Priority (What Matters Most)

  1. Correctness — Does it do what it's supposed to?
  2. Security — Can it be exploited?
  3. Maintainability — Will the next person understand this?
  4. Performance — Will it scale?
  5. Style — Is it consistent? (ideally enforced by linters, not humans)

3-Pass Review

Pass Focus What You're Looking For Time
1. Orientation Big picture Does the approach make sense? Is the scope right? Over-engineered? 2-3 min
2. Logic Deep read Edge cases, null handling, error paths, concurrency, off-by-one 10-15 min
3. Polish Surface Naming, duplication, test coverage, docs 3-5 min

Pass 1 shortcut: Read the PR description and test names first. They reveal intent faster than code.

Comment Prefixes

Prefix Meaning Author Response
[blocking] Must fix before merge Fix it
[suggestion] Better approach exists Consider it, explain if declining
[question] I don't understand Clarify (in code, not just in reply)
[nit] Trivial style issue Fix if easy, skip if not
[praise] This is well done Appreciate it

Good vs Bad Comment Examples

Bad Why Good
"This is confusing" Vague, unhelpful "[suggestion] This nested ternary is hard to follow. Consider extracting to a named function like isEligibleForDiscount()."
"Fix this" No context "[blocking] This accepts user input without sanitization. Use escapeHtml() before rendering."
"Why?" Sounds hostile "[question] What's the motivation for the custom sort here vs Array.sort()? Is there a performance concern?"
"LGTM" (on 500-line PR) Rubber stamp "Pass 1: Approach looks right. Pass 2 comments below. Pass 3: naming is clean."

Review Checklist

Security

Read the full file on GitHub · 196 lines

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. 6d ago First seen · 196 lines · 19 tokens per session scan A 615ec9874c58

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository fabioc-aloha/Alex_Skill_Mall (4 stars, last pushed 3d ago), licensed MIT. It adds 19 tokens to every session and 2,007 once invoked, about $0.0001 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 2026-09-03.

Related

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