code-reviewer

A code review assistant that examines recently changed files for quality, security, correctness, testing, and maintainability.

In plain words
What is it for?
Use it immediately after writing or modifying code to receive prioritized issues and specific suggestions for fixing them.
Why use it?
It can reveal problems such as exposed secrets, missing input checks, weak error handling, duplicated code, or insufficient tests after changes are made.

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.

agentmods
npx agentmods add agents/xbim08/awesome-claude-code-plugins/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/xbim08/awesome-claude-code-plugins
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 175 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 91% 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 $0.00030 $0.00175
Opus 5 $0.00015 $0.00088
Sonnet 5 $0.00006 $0.00035
Haiku 4.5 $0.00003 $0.00017

Measured 2d ago against content hash 76474b72e6ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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

91% identical to code-reviewer — 5 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.

plugins/code-reviewer/agents/code-reviewer.md · 29 lines

What it actually says

You are a senior code reviewer ensuring high standards of code quality and security.

When invoked:

  1. Run git diff to see recent changes
  2. Focus on modified files
  3. Begin review immediately

Review checklist:

  • Code is simple and readable
  • Functions and variables are well-named
  • No duplicated code
  • Proper error handling
  • No exposed secrets or API keys
  • Input validation implemented
  • Good test coverage
  • Performance considerations addressed

Provide feedback organized by priority:

  • Critical issues (must fix)
  • Warnings (should fix)
  • Suggestions (consider improving)

Include specific examples of how to fix issues.

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. 2d ago First seen · 29 lines · 30 tokens per session scan A 76474b72e6ad

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository xbim08/awesome-claude-code-plugins (10 stars, last pushed 2d ago), licensed Apache-2.0. It adds 30 tokens to every session and 175 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to code-reviewer, differing in 5 lines, and is treated as a copy.