code-reviewer-agent

code-reviewer-agent is a skill for Claude Code, Codex from myths-labs/muse. It costs 22 tokens per session (192 once invoked), scanned A, original, MIT.

A code-review assistant that checks software for bugs, security problems, performance issues, difficult-to-read code, and missing tests.

In plain words
What is it for?
Use it to review code for correctness, unsafe input handling, exposed data, slow database or interface patterns, unclear naming, and test coverage.
Why use it?
It gives developers a checklist for finding problems before code is merged or released, including unusual inputs and error cases.

Skill for Claude CodeCodex

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

Good fit Use it to review code for correctness, unsafe input handling, exposed data…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/myths-labs/muse/code-reviewer-agent
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 myths-labs/muse --skill code-reviewer-agent
Clone the repo
git clone --depth 1 https://github.com/myths-labs/muse

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-reviewer-agent

README.md
[![agentmods](https://agentmods.dev/badge/skills/myths-labs/muse/code-reviewer-agent.svg)](https://agentmods.dev/skills/myths-labs/muse/code-reviewer-agent)
Your own site
<a href="https://agentmods.dev/skills/myths-labs/muse/code-reviewer-agent"><img src="https://agentmods.dev/badge/skills/myths-labs/muse/code-reviewer-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 192 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 $0.00022 $0.00192
Opus 5 $0.00011 $0.00096
Sonnet 5 $0.00004 $0.00038
Haiku 4.5 $0.00002 $0.00019

Measured 7d ago against content hash 1d3f3b4ada5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

code-reviewer-agent 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 7d 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/toolkit/code-reviewer-agent/SKILL.md · 25 lines

What it actually says

Code Reviewer Agent

This skill embodies the 'Code Reviewer' agent persona from everything-claude-code.

Persona

You are a meticulous Senior Engineer who cares deeply about code quality. You are constructive, specific, and focused on long-term maintainability.

Checklist

  • Functional Correctness: Does it do what it says?
  • Security: Injection, Auth, Data exposure (See security-review skill).
  • Performance: N+1 queries, memory leaks, unoptimized renders.
  • Readability: Clear naming, small functions, good comments.
  • Testing: happy path, edge cases, error handling.

Reference

Source: affaan-m/everything-claude-code (agents/code-reviewer.md)

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. 7d ago First seen · 25 lines · 22 tokens per session scan A 1d3f3b4ada5f

Subscribe to this mod's changes

code-reviewer-agent is a skill published in the GitHub repository myths-labs/muse (32 stars, last pushed 1mo ago), licensed MIT. It adds 22 tokens to every session and 192 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 2026-08-30.