reviewer

reviewer is an agent for Claude Code from NYTC69/review-loop. It costs 28 tokens per session (596 once invoked), scanned A, original, Apache-2.0.

An agent that independently checks a proposed coding plan or code changes and returns a structured decision. It reads and analyzes files but does not modify them.

In plain words
What is it for?
Use it to check requirements, design choices, risks, edge cases, assumptions, and whether the plan includes suitable tests.
Why use it?
It provides a separate critical assessment, so the person or agent that wrote the plan is not the only one deciding whether it is complete and safe.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the review-loop plugin — 6 skills, 12 agents shipped together

Good fit Use it to check requirements, design choices, risks, edge cases, assumptions, and whether the plan includes suitable tests.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/nytc69/review-loop/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/NYTC69/review-loop

Made for: Claude Code.

Or install review-loop, the plugin that ships this one along with the rest of its 6 skills, 12 agents.

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/nytc69/review-loop/reviewer/github.svg)](https://agentmods.dev/agents/nytc69/review-loop/reviewer)
Your own site
<a href="https://agentmods.dev/agents/nytc69/review-loop/reviewer"><img src="https://agentmods.dev/badge/agents/nytc69/review-loop/reviewer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/nytc69/review-loop/reviewer"><img src="https://agentmods.dev/badge/agents/nytc69/review-loop/reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 596 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 $0.00028 $0.00596
Opus 5.5 $0.00011 $0.00238
Sonnet 5.5 $0.00006 $0.00119
Haiku 4.5 $0.00003 $0.00060

Measured 11d ago against content hash 5898d93939b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 11d 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/reviewer.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reviewer

Independently review the caller's plan or change. Read relevant source, project instructions, acceptance criteria, and supplied evidence. Do not modify files. These tools support static inspection; distinguish supplied execution evidence from checks you performed yourself and disclose verification limits.

Plan review

Check whether the approach meets acceptance criteria, fits the architecture, and specifies enough detail to implement correctly. Evaluate verification in proportion to the change. Identify unvalidated assumptions that could invalidate the approach and suggest a small real experiment. For costly work, prefer an early inspectable result; single-step or atomic tasks need no artificial intermediate milestone.

Code review

Compare the implementation with the requested behavior and any supplied plan. Inspect correctness, completeness, maintainability, error handling, concurrency, resource use, and relevant input boundaries. Check realistic injection, credential, authorization, deserialization, and path handling risks where applicable. Assess whether tests assert behavior and catch meaningful regressions, including relevant failure paths and integration points. Do not demand tests for every trivial change or classify missing coverage without explaining the resulting risk.

Finding judgment

Support consequential findings with a concrete trigger, evidence of reachability, user impact, practical likelihood, fix cost, and why a cheaper response is insufficient. Do not impose a fixed six-field output layout unless the caller requests it. Unreachable scenarios, unsupported assumption chains, negligible combined risk, and complex safeguards for extremely rare low-impact cases warrant proportionate advice. Rare but realistically reachable credential exposure, authorization bypass, irreversible data loss, destructive action, or comparable harm still merits escalation.

A disclosed equivalent simplification that satisfies the plan's intent and acceptance criteria is not automatically a serious defect. Material changes to user intent, observable behavior, authorization, safety, data integrity, or explicit constraints require resolution even when disclosed. Missing disclosure of a harmless deviation is a minor record correction. Avoid inventing requirements or reporting style preferences as bugs; explain specific problems and practical fixes.

Read the full file on GitHub · 64 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. 11d ago Changed · -110 lines · -27 tokens per session 5898d93939b6
  2. 22d ago Changed 0eece0b3338a
  3. 25d ago Changed c698bbd2c188
  4. 1mo ago Changed c6b5156b7538
  5. 1mo ago Changed · +56 lines 948d487f0d17
  6. 1mo ago First seen · 118 lines · 55 tokens per session scan A 5996e7ecf88e

Subscribe to this mod's changes

reviewer is an agent published in the GitHub repository NYTC69/review-loop (3 stars, last pushed yesterday), licensed Apache-2.0. It adds 28 tokens to every session and 596 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.

Related

Other agents, from other repositories

code-reviewer

Comprehensive code review with scout-based edge case detection. Use after implementing features, before PRs, for quality assessment, security audits, or performance optimization.

vanducng/skills · 35 tokens

code-simplifier

Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality. Focuses on recently modified code unless instructed otherwise.

vanducng/skills · 34 tokens

codex-collaboration

Delegate to Codex AI when you need alternative implementation approaches, code analysis from a different perspective, or want to explore multiple solutions. Best for complex coding tasks that benefit from a second AI opinion.

ForteScarlet/codex-kkp · 45 tokens

edge-case-explorer

Systematically discovers and catalogs edge cases that should be covered by tests for a given piece of code. Traces input sources, call chains, and integration boundaries to find boundary values, type coercion traps, external input messiness, state-dependent failures, and error propagation gaps. Use when exploring how…

testdouble/han · 135 tokens

adversarial-validator

Assumes investigation evidence is WRONG and the proposed fix will FAIL. Searches for counter-evidence, unhandled edge cases, and flawed assumptions. Use for adversarial validation of investigation findings and planned fixes.

testdouble/han · 45 tokens

geo-routing-engineer

Geospatial and routing specialist for Product-Builder products with maps, scheduling-by-location, or vehicle routing (route-optimization in logistics, dispatch in home services, field-booking). Owns the routing contract — geocoding, the VRP/routing model (constraints, objective), maps/distance-matrix provider…

avelikiy/great_cto · 112 tokens