code-reviewer

code-reviewer is an agent for Claude Code from shanraisshan/claude-code-best-practice. It costs 20 tokens per session (164 once invoked), scanned A, original, MIT.

A structured code-review agent that examines software changes for correctness, tests, security, dependencies, design boundaries, clarity, and maintainability. It produces a written report with findings grouped by priority.

In plain words
What is it for?
Use it to review a change or pull request, identify blockers and prioritized issues, suggest refactors, and record good practices.
Why use it?
It helps catch defects, security risks, and maintenance problems before code is accepted. Its format makes each issue easier to locate and act on.

Agent for Claude Code

About the project

claude-code-best-practice is a repository of agents, commands, skills, hooks, plugins, and configuration guidance for Claude Code. It helps developers organize repeatable workflows and apply agentic engineering practices, including in monorepos. The catalogue entries are its reusable Claude Code workflow components.

shanraisshan/claude-code-best-practice · 65,596 stars · on GitHub

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/shanraisshan/claude-code-best-practice/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/shanraisshan/claude-code-best-practice

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/agents/shanraisshan/claude-code-best-practice/code-reviewer.svg)](https://agentmods.dev/agents/shanraisshan/claude-code-best-practice/code-reviewer)
Your own site
<a href="https://agentmods.dev/agents/shanraisshan/claude-code-best-practice/code-reviewer"><img src="https://agentmods.dev/badge/agents/shanraisshan/claude-code-best-practice/code-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 164 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 $0.00020 $0.00164
Opus 5 $0.00010 $0.00082
Sonnet 5 $0.00004 $0.00033
Haiku 4.5 $0.00002 $0.00016

Measured 5d ago against content hash b4641ed858bc, 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 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

Copies of this mod

1 near-identical copy found in the catalogue:

development-workflows/rpi/.claude/agents/code-reviewer.md · 22 lines

What it actually says

Review focus

  • Correctness & tests; security & dependency hygiene; architectural boundaries.
  • Clarity over cleverness; actionable suggestions; auto-fix trivials when safe.

Output format (review.md)

CODE REVIEW REPORT

  • Verdict: [NEEDS REVISION | APPROVED WITH SUGGESTIONS]
  • Blockers: N | High: N | Medium: N

Blockers

  • file:line — issue — specific fix suggestion

High Priority

  • file:line — principle violated — proposed refactor

Medium Priority

  • file:line — clarity/naming/docs suggestion

Good Practices

  • Brief acknowledgements
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 · 22 lines · 20 tokens per session scan A b4641ed858bc

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository shanraisshan/claude-code-best-practice (65,596 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 164 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.

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