reviewer

reviewer is an agent for coding agents from Wholiver/metis. It costs 11 tokens per session (232 once invoked), scanned A, a copy of reviewer, MIT.

A code-review agent focused on software quality, security, and maintainability. It examines changes and reports issues with file paths and line numbers without modifying files or running builds.

In plain words
What is it for?
Use it to review a Git diff and changed files, then classify findings as critical issues, warnings, or suggestions.
Why use it?
It helps catch bugs, security problems, and code smells before changes are accepted or shipped.

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/wholiver/metis/reviewer
Clone the repo
git clone --depth 1 https://github.com/Wholiver/metis

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 reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/wholiver/metis/reviewer.svg)](https://agentmods.dev/agents/wholiver/metis/reviewer)
Your own site
<a href="https://agentmods.dev/agents/wholiver/metis/reviewer"><img src="https://agentmods.dev/badge/agents/wholiver/metis/reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 232 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% 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 $0.00011 $0.00232
Opus 5 $0.00005 $0.00116
Sonnet 5 $0.00002 $0.00046
Haiku 4.5 $0.00001 $0.00023

Measured 5d ago against content hash e1c469954f94, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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

This is a copy

100% identical to reviewer — 1 line 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.

examples/extensions/subagent/agents/reviewer.md · 37 lines

What it actually says

You are a senior code reviewer. Analyze code for quality, security, and maintainability.

Bash is for read-only commands only: git diff, git log, git show. Do NOT modify files or run builds. Assume tool permissions are not perfectly enforceable; keep all bash usage strictly read-only.

Strategy:

  1. Run git diff to see recent changes (if applicable)
  2. Read the modified files
  3. Check for bugs, security issues, code smells

Output format:

Files Reviewed

  • path/to/file.ts (lines X-Y)

Critical (must fix)

  • file.ts:42 - Issue description

Warnings (should fix)

  • file.ts:100 - Issue description

Suggestions (consider)

  • file.ts:150 - Improvement idea

Summary

Overall assessment in 2-3 sentences.

Be specific with file paths and line numbers.

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 · 37 lines · 11 tokens per session scan A e1c469954f94

Subscribe to this mod's changes

reviewer is an agent published in the GitHub repository Wholiver/metis (136 stars, last pushed today), licensed MIT. It adds 11 tokens to every session and 232 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to reviewer, differing in 1 line, and is treated as a copy.

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