code-reviewer

code-reviewer is a skill for Claude Code from eric861129/SKILLS_All-in-one. It costs 130 tokens per session (1,116 once invoked), scanned A, a copy of code-reviewer, MIT.

A structured code reviewer that examines files and code changes for bugs, security vulnerabilities, performance problems, code smells, test gaps, and design concerns. A code smell is a sign that code may be harder to maintain or may hide a problem.

In plain words
What is it for?
Use it to review pull requests, check architecture, look for issues such as SQL injection or N+1 queries, and assess whether tests cover edge cases.
Why use it?
It gives prioritized feedback on pull requests and audits, helping teams find important issues before merging or releasing code.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to review pull requests, check architecture, look for issues such as SQL injection or N+1 queries, and assess whether tests cover edge cases.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/eric861129/skills_all-in-one/code-reviewer
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 eric861129/SKILLS_All-in-one --skill code-reviewer
Clone the repo
git clone --depth 1 https://github.com/eric861129/SKILLS_All-in-one

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-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/code-reviewer/github.svg)](https://agentmods.dev/skills/eric861129/skills_all-in-one/code-reviewer)
Your own site
<a href="https://agentmods.dev/skills/eric861129/skills_all-in-one/code-reviewer"><img src="https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/code-reviewer/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-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/skills/eric861129/skills_all-in-one/code-reviewer"><img src="https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/code-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 130 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,116 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 97% copy Near-identical to another mod 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 $0.00130 $0.01116
Opus 5 $0.00065 $0.00558
Sonnet 5 $0.00026 $0.00223
Haiku 4.5 $0.00013 $0.00112

Measured 5d ago against content hash d8185a120158, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

code-reviewer 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 5d 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.

Origin

This is a copy

97% identical to code-reviewer — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

public/SKILLS/Development & Code Tools/code-reviewer/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Reviewer

Senior engineer conducting thorough, constructive code reviews that improve quality and share knowledge.

When to Use This Skill

  • Reviewing pull requests
  • Conducting code quality audits
  • Identifying refactoring opportunities
  • Checking for security vulnerabilities
  • Validating architectural decisions

Core Workflow

  1. Context — Read PR description, understand the problem being solved. Checkpoint: Summarize the PR's intent in one sentence before proceeding. If you cannot, ask the author to clarify.
  2. Structure — Review architecture and design decisions. Ask: Does this follow existing patterns in the codebase? Are new abstractions justified?
  3. Details — Check code quality, security, and performance. Apply the checks in the Reference Guide below. Ask: Are there N+1 queries, hardcoded secrets, or injection risks?
  4. Tests — Validate test coverage and quality. Ask: Are edge cases covered? Do tests assert behavior, not implementation?
  5. Feedback — Produce a categorized report using the Output Template. If critical issues are found in step 3, note them immediately and do not wait until the end.

Disagreement handling: If the author has left comments explaining a non-obvious choice, acknowledge their reasoning before suggesting an alternative. Never block on style preferences when a linter or formatter is configured.

Reference Guide

Load detailed guidance based on context:

Topic Reference Load When
Review Checklist references/review-checklist.md Starting a review, categories
Common Issues references/common-issues.md N+1 queries, magic numbers, patterns
Feedback Examples references/feedback-examples.md Writing good feedback
Report Template references/report-template.md Writing final review report
Spec Compliance references/spec-compliance-review.md Reviewing implementations, PR review, spec verification
Receiving Feedback references/receiving-feedback.md Responding to review comments, handling feedback

Read the full file on GitHub · 120 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago First seen · 120 lines · 130 tokens per session scan A d8185a120158

Subscribe to this mod's changes

code-reviewer is a skill published in the GitHub repository eric861129/SKILLS_All-in-one (52 stars, last pushed 4mo ago), licensed MIT. It adds 130 tokens to every session and 1,116 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to code-reviewer, differing in 2 lines, and is treated as a copy.

Related

Other skills, from other repositories

pr-sweep

Use when you want to sweep all open pull requests across all repos, triage their status, run code reviews on unreviewed PRs, merge what's ready, fix quick blockers, and produce a full status report. Trigger when the user says "check my PRs", "close out open PRs", "what's the status of my PRs", "sweep my PRs", "PR…

harnessprotocol/harness-kit · 0 tokens

rubber-ducky

Use when you've planned a non-trivial change and are about to implement it, finished a complex or multi-file piece of work, just wrote tests, or are stuck on repeated failures — and any time the user says "rubber duck this", "rubber ducky", "get a second opinion", "sanity-check my plan", "poke holes in this", "what am…

harnessprotocol/harness-kit · 186 tokens

review

Use when user invokes /review to review code changes. Also triggers on "review my code", "check this PR", "look at my changes". Accepts a PR number (e.g. /review 123), a path filter (e.g. /review src/auth/), or no argument (reviews current branch vs base). Produces structured per-file review with severity labels…

harnessprotocol/harness-kit · 103 tokens

code-review

Systematic code review checklist.

OpenScribbler/syllago · 5 tokens

jira-issue-create

Create one or more Jira issues through acli from user-approved drafts using heading-based Context, Acceptance criteria, and Engineering notes sections. Use only when explicitly invoked to create Jira issues; use jira-issue-refine when requirements still need refinement.

yarlson/yarstack · 53 tokens

a-rules-optimizer

Audit .claude/rules/ and CLAUDE.md against what the codebase actually does.

imisic/claude-marketplace · 26 tokens