code-review

code-review is a skill for Claude Code from the-open-agent/oss-skills. It costs 118 tokens per session (2,279 once invoked), scanned A, original, Apache-2.0.

A structured way to review a pull request, which is a proposed code change submitted for others to check before it is merged.

In plain words
What is it for?
It helps review the issue, proposal, tests, public interface changes, implementation, missing documentation, and error cases.
Why use it?
It catches problems in purpose, behavior, compatibility, tests, and documentation while keeping feedback useful to contributors.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the oss-skills plugin — 18 skills shipped together

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/the-open-agent/oss-skills/code-review
Any agent
npx skills add the-open-agent/oss-skills --skill code-review
Clone the repo
git clone --depth 1 https://github.com/the-open-agent/oss-skills

Made for: Claude Code.

Or install oss-skills, the plugin that ships this one along with the rest of its 18 skills.

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/the-open-agent/oss-skills/code-review.svg)](https://agentmods.dev/skills/the-open-agent/oss-skills/code-review)
Your own site
<a href="https://agentmods.dev/skills/the-open-agent/oss-skills/code-review"><img src="https://agentmods.dev/badge/skills/the-open-agent/oss-skills/code-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 118 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,279 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 5.1 $0.00118 $0.02279
Opus 5 $0.00059 $0.01140
Sonnet 5 $0.00024 $0.00456
Haiku 4.5 $0.00012 $0.00228

Measured 6d ago against content hash 2ace699d9aca, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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.

skills/code-review/SKILL.md · 192 lines

How it starts

The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Maintainer-Grade Code Review

An open-source review does two things at once: it protects the codebase, and it decides whether this person contributes again. Most reviews are competent at the first and terrible at the second.

Read in this order

Never start at the diff. Start at intent.

  1. The linked issue. Was this problem agreed to be worth solving? A perfect implementation of an unwanted feature must be closed, and it is far kinder to discover that in the first minute than the fortieth.
  2. The PR description. What does the author claim it does?
  3. The tests. They tell you what the author believes the behavior is. Read them before the implementation — you will review the implementation more honestly.
  4. The public API diff. New exports, changed signatures, changed defaults, changed error types. This is where irreversible mistakes live (see api-design).
  5. The implementation.
  6. What's missing — docs, changelog entry, migration note, the test for the error path they did not think about.
gh pr checkout 123
gh pr diff 123 --name-only          # scope at a glance
gh pr view 123 --json title,body,additions,deletions,files,author
make test                            # run it locally; CI green is necessary, not sufficient

Severity, stated explicitly

Unlabeled feedback makes contributors guess which comments block the merge. Prefix every comment:

Prefix Meaning Author must
blocking: Must change before merge Fix it
question: I don't understand yet Answer; may resolve to nothing
suggestion: Better, but your call Decide
nit: Style/taste, non-blocking Ignore freely
praise: This is good Nothing — but say it anyway

Reserve blocking for: correctness bugs, security issues, data loss, breaking changes without a migration path, missing tests on new behavior, and public API mistakes. Everything else is a suggestion. A review where every comment is blocking is a rewrite request wearing a costume.

Read the full file on GitHub · 192 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 · 192 lines · 118 tokens per session scan A 2ace699d9aca

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository the-open-agent/oss-skills (5 stars, last pushed 28d ago), licensed Apache-2.0. It adds 118 tokens to every session and 2,279 once invoked, about $0.0006 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.

Related

Other skills, from other repositories

opentrons-dev-update

Guide users through setting up or updating a local development environment for the Opentrons opentrons/opentrons monorepo. Use this skill whenever a user mentions setting up or updating Opentrons development, cloning the Opentrons repo, installing or refreshing dev dependencies for Opentrons, getting started…

koji/opentrons-devenv-skill · 170 tokens

opentrons-dev-setup

Guide users through setting up a local development environment for the Opentrons opentrons/opentrons monorepo. Use this skill whenever a user mentions setting up Opentrons development, cloning the Opentrons repo, installing dev dependencies for Opentrons, getting started contributing to Opentrons, or hits errors…

koji/opentrons-devenv-skill · 164 tokens

cn-check

Install and run the Continue CLI (cn) to execute AI agent checks on local code changes. Use when asked to "run checks", "lint with AI", "review my changes with cn", or set up Continue CI locally.

continuedev/continue · 49 tokens

design-taste-frontend

Anti-slop frontend skill for landing pages, portfolios, and redesigns. The agent reads the brief, infers the right design direction, and ships interfaces that do not look templated. Real design systems when applicable, audit-first on redesigns, strict pre-flight check.

Leonxlnx/taste-skill · 61 tokens

docs-style

Style guidelines for writing and updating documentation. Use when writing new docs, updating existing docs, or reviewing docs for quality.

continuedev/continue · 27 tokens

image-to-code

Elite website image-to-code skill for Codex. For visually important web tasks, it must first generate the design image(s) itself, deeply analyze them, then implement the website to match them as closely as possible. In Codex, it must prefer large, readable, section-specific images instead of tiny compressed boards…

Leonxlnx/taste-skill · 116 tokens