code-review

code-review is a skill for Claude Code, Codex from OKHP3/skillz. It costs 109 tokens per session (1,168 once invoked), scanned A, original, MIT.

Code review guidance for examining a change, such as a diff, pull request, branch, or uncommitted work, for correctness, risk, and maintainability.

In plain words
What is it for?
Reviewing code changes, finding missing tests or migrations, tracing affected callers, and ranking problems by severity.
Why use it?
It focuses review time on failures that could reach production instead of spending it on formatting or minor preferences.

Skill for Claude CodeCodex

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

Good fit Reviewing code changes, finding missing tests or migrations, tracing affected callers, and ranking problems by severity.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/okhp3/skillz/code-review
View source ↗ OKHP3/skillz
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 OKHP3/skillz --skill code-review
Clone the repo
git clone --depth 1 https://github.com/OKHP3/skillz

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/okhp3/skillz/code-review/github.svg)](https://agentmods.dev/skills/okhp3/skillz/code-review)
Your own site
<a href="https://agentmods.dev/skills/okhp3/skillz/code-review"><img src="https://agentmods.dev/badge/skills/okhp3/skillz/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/okhp3/skillz/code-review"><img src="https://agentmods.dev/badge/skills/okhp3/skillz/code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 109 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,168 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 $0.00109 $0.01168
Opus 5 $0.00055 $0.00584
Sonnet 5 $0.00022 $0.00234
Haiku 4.5 $0.00011 $0.00117

Measured 6d ago against content hash baec0f167ab6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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.

community/code-review/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code review

A review is a search for the ways this change fails in production, ranked by how badly. It is not a style pass. Style is the lint job's work — if you spend the review on formatting, you have used up the reader's attention on the cheapest possible findings.

The bar for reporting: could you write the input that makes this go wrong? If not, you have a question, not a finding. Say it as a question.

1. Understand the intent before reading the diff

Read the PR description, linked issue, or ask. Reviewing a change without knowing its goal produces suggestions that fight the author's purpose.

Then decide what should have changed. Files you expected to see and don't are the highest- yield finding in any review — a new state field with no migration, a new branch with no test, a new error path with no logging.

Done when: you can state the intent in a sentence, and you have a list of what you expect the diff to touch.

2. Read the change in dependency order

Not top to bottom, and not alphabetically, the order the tool shows you is meaningless. Start at the data model or interface, then the logic, then the callers, then the tests. Meaning flows that direction and reviewing against the flow means re-reading everything twice.

Done when: you have read every changed hunk, including the ones that look boring.

3. Hunt in priority order

Work down this list. Stop going deeper once you have found something serious enough to block — a review that reports one real bug promptly beats a complete review delivered late.

Correctness

  • Off-by-one, inverted condition, wrong default, wrong variable in a copy-pasted block
  • Error paths — what happens when the call fails, returns empty, times out, returns partial?
  • Boundaries — empty, one, many, null, zero, negative, maximum, duplicate, out of order
  • Concurrency — shared mutable state, non-atomic read-modify-write, assumed ordering

Blast radius

  • Is it reversible? A schema change, a data migration, or a published API is not
  • Does it change behaviour for existing callers or stored data?
  • Is it behind a flag, and does the off path actually work?

Read the full file on GitHub · 107 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 · 107 lines · 109 tokens per session scan A baec0f167ab6

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository OKHP3/skillz (3 stars, last pushed yesterday), licensed MIT. It adds 109 tokens to every session and 1,168 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 2026-09-03.

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