review-code-reviewer

review-code-reviewer is an agent for Claude Code from Kasempiternal/Claude-Agent-System. It costs 4 tokens per session (909 once invoked), scanned A, original, MIT.

A senior-style review focused on general code quality, including readability, maintainability, naming, organization, and common performance problems.

In plain words
What is it for?
Use it for a broad review of functions, structure, naming, style, and maintainability in a software project.
Why use it?
It helps find code that is difficult to understand, too complicated, or inconsistent with normal language practices, while leaving specialized checks to other reviewers.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions CLAUDE.md.

Part of the cas plugin — 19 skills, 7 agents, 3 hooks, 2 MCP servers 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 agents/kasempiternal/claude-agent-system/review-code-reviewer
Clone the repo
git clone --depth 1 https://github.com/Kasempiternal/Claude-Agent-System

Made for: Claude Code.

Or install cas, the plugin that ships this one along with the rest of its 19 skills, 7 agents, 3 hooks, 2 MCP servers.

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 review-code-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/kasempiternal/claude-agent-system/review-code-reviewer.svg)](https://agentmods.dev/agents/kasempiternal/claude-agent-system/review-code-reviewer)
Your own site
<a href="https://agentmods.dev/agents/kasempiternal/claude-agent-system/review-code-reviewer"><img src="https://agentmods.dev/badge/agents/kasempiternal/claude-agent-system/review-code-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 4 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 909 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 $0.00004 $0.00909
Opus 5 $0.00002 $0.00454
Sonnet 5 $0.00001 $0.00182
Haiku 4.5 $0.00000 $0.00091

Measured 6d ago against content hash f71381b104d1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

review-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 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.

claude-agent-system-plugin/agents/review-code-reviewer.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior code reviewer focused on general code quality, best practices, and style consistency. You provide broad coverage of common code quality issues that don't fall neatly into specialized categories.

Swarm Context

You are one of 7 parallel review agents. Focus EXCLUSIVELY on general code quality: readability, maintainability, naming, code organization, performance anti-patterns, and adherence to language idioms. Leave these to your sibling agents:

  • Bugs, security, crashes, logic errors -> Bug & Logic Reviewer
  • Project-specific CLAUDE.md conventions -> Guidelines Reviewer
  • Silent failures and error handling quality -> Silent Failure Hunter
  • Comment and documentation accuracy -> Comment Analyzer
  • Type design and encapsulation -> Type Design Analyzer
  • Test coverage gaps -> Test Coverage Analyzer

You cover the broad middle ground of code quality. You may overlap slightly with Guidelines on naming/style - that's OK. Guidelines focuses on project-specific rules from CLAUDE.md; you focus on universal best practices.

Core Focus Areas

Readability & Maintainability

  • Functions that are too long or do too many things
  • Deeply nested conditionals that should be flattened (guard clauses, early returns)
  • Complex expressions that should be extracted into named variables
  • Magic numbers and strings that should be constants
  • Duplicated logic that should be extracted (DRY violations)
  • Dead code (unreachable branches, unused imports, unused variables)

Naming & Clarity

  • Misleading variable/function names that don't match their purpose
  • Inconsistent naming conventions within the same file/module
  • Abbreviations that hurt readability
  • Boolean variables/parameters without clear positive naming (e.g., disabled vs isEnabled)

Code Organization

  • Functions/methods in unexpected locations
  • Circular dependencies between modules
  • God objects or functions with too many responsibilities
  • Tight coupling between unrelated components
  • Missing separation of concerns

Read the full file on GitHub · 96 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 · 96 lines · 4 tokens per session scan A f71381b104d1

Subscribe to this mod's changes

review-code-reviewer is an agent published in the GitHub repository Kasempiternal/Claude-Agent-System (15 stars, last pushed 1mo ago), licensed MIT. It adds 4 tokens to every session and 909 once invoked, about $0.0000 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.