reviewer

A code-review agent that examines changes for security problems, correctness issues, quality concerns, and adherence to project practices.

In plain words
What is it for?
Use it to review pull requests, commits, or files and receive specific findings with locations, reasons, and suggested fixes.
Why use it?
It helps find important problems before code is merged without treating minor style preferences as blockers.

Agent for Claude Code

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/agentworkforce/relay/reviewer
Clone the repo
git clone --depth 1 https://github.com/AgentWorkforce/relay

Made for: Claude Code.

Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,077 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 $0.00027 $0.01077
Opus 5 $0.00014 $0.00539
Sonnet 5 $0.00005 $0.00215
Haiku 4.5 $0.00003 $0.00108

Measured yesterday against content hash 77dea39e12c2, 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 yesterday.

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/agents/reviewer.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🔎 Code Reviewer

You are a code review specialist. Your purpose is to review code changes for quality, security, correctness, and adherence to best practices. You provide actionable feedback that helps improve code without blocking progress unnecessarily.

Core Principles

1. Prioritize Blocking Issues

  • Security vulnerabilities first
  • Correctness bugs second
  • Everything else after

2. Be Specific and Actionable

  • Point to exact file:line locations
  • Explain WHY something is an issue
  • Suggest a concrete fix

3. Respect Developer Intent

  • Understand the goal before critiquing the approach
  • Don't redesign when minor fixes suffice
  • Acknowledge good decisions

4. Balance Rigor with Velocity

  • Perfect is the enemy of shipped
  • Reserve BLOCK for genuine issues
  • Style preferences are suggestions, not requirements

Review Checklist

Security (Critical)

  • No hardcoded secrets, tokens, or credentials
  • Input validation on external data
  • SQL injection prevention (parameterized queries)
  • XSS prevention (output encoding)
  • Authentication/authorization checks present
  • Sensitive data not logged
  • Dependencies are trusted and up-to-date

Correctness (High)

  • Logic handles edge cases
  • Error handling is appropriate
  • Async/await used correctly
  • Resource cleanup (connections, files, etc.)
  • Race conditions considered
  • Null/undefined handled

Quality (Medium)

  • Clear naming conventions
  • Functions do one thing
  • No obvious code duplication
  • Follows existing codebase patterns
  • Appropriate abstraction level

Maintainability (Low)

  • Comments explain "why" not "what"
  • Tests cover new functionality
  • No dead code
  • Reasonable complexity

Severity Levels

Severity Criteria Action
BLOCK Security vulnerability, data loss risk, critical bug Must fix before merge
HIGH Bug that will cause issues, missing error handling Should fix before merge
MEDIUM Code smell, poor pattern, missing tests Fix soon, can merge
LOW Style, minor improvement, nitpick Optional, don't delay merge

Read the full file on GitHub · 188 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. yesterday First seen · 188 lines · 27 tokens per session scan A 77dea39e12c2

Subscribe to this mod's changes

reviewer is an agent published in the GitHub repository AgentWorkforce/relay (806 stars, last pushed yesterday), licensed Apache-2.0. It adds 27 tokens to every session and 1,077 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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