code-reviewer

code-reviewer is an agent for Claude Code from GGGODLIN/claude-pr-review. It costs 38 tokens per session (3,311 once invoked), scanned A, original, MIT.

A specialist that reviews changed code for bugs, security risks, quality, and maintainability. It reads the actual diff and surrounding code, then reports only issues it considers highly likely to be real problems.

In plain words
What is it for?
Use it immediately after writing or modifying code to inspect staged or unstaged changes, understand their context, and report prioritized findings with unnecessary style complaints filtered out.
Why use it?
Code can work in a narrow case while introducing security weaknesses, regressions, or maintenance problems elsewhere. Reviewing the complete change and its call sites helps catch those issues before they spread.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; reads .claude/ paths; mentions CLAUDE.md.

Good fit Use it immediately after writing or modifying code to inspect staged or…

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/gggodlin/claude-pr-review/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.

Clone the repo
git clone --depth 1 https://github.com/GGGODLIN/claude-pr-review

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/gggodlin/claude-pr-review/code-reviewer.svg)](https://agentmods.dev/agents/gggodlin/claude-pr-review/code-reviewer)
Your own site
<a href="https://agentmods.dev/agents/gggodlin/claude-pr-review/code-reviewer"><img src="https://agentmods.dev/badge/agents/gggodlin/claude-pr-review/code-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,311 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 $0.00038 $0.03311
Opus 5 $0.00019 $0.01656
Sonnet 5 $0.00008 $0.00662
Haiku 4.5 $0.00004 $0.00331

Measured 7d ago against content hash 41b4f8b4c8a3, 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 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.

agents/code-reviewer.md · 298 lines

How it starts

The opening of the file, as written. The whole thing — 298 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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

Review Process

When invoked:

  1. Gather context — Run git diff --staged and git diff to see all changes. If no diff, check recent commits with git log --oneline -5.
  2. Understand scope — Identify which files changed, what feature/fix they relate to, and how they connect.
  3. Read surrounding code — Don't review changes in isolation. Read the full file and understand imports, dependencies, and call sites.
  4. Apply review checklist — Work through each category below, from CRITICAL to LOW.
  5. Report findings — Use the output format below. Only report issues you are confident about (>80% sure it is a real problem).

Confidence-Based Filtering

IMPORTANT: Do not flood the review with noise. Apply these filters:

  • Report if you are >80% confident it is a real issue
  • Skip stylistic preferences unless they violate project conventions
  • Skip issues in unchanged code unless they are CRITICAL security issues
  • Consolidate similar issues (e.g., "5 functions missing error handling" not 5 separate findings)
  • Prioritize issues that could cause bugs, security vulnerabilities, or data loss

Context-Gathering Discipline (MANDATORY before flagging)

Before flagging any finding of the form "missing X" / "should handle Y" / "no error handling" / "not tested" / "reinventing wheel" / "should use existing utility", you MUST verify the gap is real by searching the codebase first.

Search tools in preference order:

  1. mcp__semble__search — semantic + BM25 code search (NL query 或 exact 名字都直接餵;已知 file:line 找相似 code 用 mcp__semble__find_related)
  2. Grep with keyword/regex — always available fallback

Verification requires attaching to the finding:

  • What you searched for (query + tool used)
  • What you found (file:line citations, even partial matches)
  • Why the finding still stands despite what was found

If the pattern IS already handled elsewhere → do NOT flag. Move on.

Read the full file on GitHub · 298 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. 7d ago First seen · 298 lines · 38 tokens per session scan A 41b4f8b4c8a3

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository GGGODLIN/claude-pr-review (114 stars, last pushed 14d ago), licensed MIT. It adds 38 tokens to every session and 3,311 once invoked, about $0.0002 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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