review

review is a skill for Claude Code from ANcpLua/ancplua-claude-plugins. It costs 60 tokens per session (1,284 once invoked), scanned A, original, MIT.

A read-only code review workflow for finding maintainability problems in a repository or code change. It reports only issues supported by repository evidence and does not modify files.

In plain words
What is it for?
Use it to review a Git diff, a selected path, or a subsystem, especially when checking for duplication, unclear ownership, weak names, or other evidence-backed risks.
Why use it?
It reduces false alarms and prevents speculative cleanup. It keeps a review focused on problems that affect readability, security, correctness, release safety, or long-term maintenance.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the nihil plugin — 6 skills, 1 command, 5 agents shipped together

Good fit Use it to review a Git diff, a selected path, or a subsystem, especially when checking for duplication, unclear ownership, weak names, or other evidence-backed risks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ancplua/ancplua-claude-plugins/review
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.

Any agent
npx skills add ANcpLua/ancplua-claude-plugins --skill review
Clone the repo
git clone --depth 1 https://github.com/ANcpLua/ancplua-claude-plugins

Made for: Claude Code.

Or install nihil, the plugin that ships this one along with the rest of its 6 skills, 1 command, 5 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 review

README.md
[![agentmods](https://agentmods.dev/badge/skills/ancplua/ancplua-claude-plugins/review/github.svg)](https://agentmods.dev/skills/ancplua/ancplua-claude-plugins/review)
Your own site
<a href="https://agentmods.dev/skills/ancplua/ancplua-claude-plugins/review"><img src="https://agentmods.dev/badge/skills/ancplua/ancplua-claude-plugins/review/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 review

Your own site · 80×15
<a href="https://agentmods.dev/skills/ancplua/ancplua-claude-plugins/review"><img src="https://agentmods.dev/badge/skills/ancplua/ancplua-claude-plugins/review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,284 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 $0.00060 $0.01284
Opus 5.5 $0.00024 $0.00514
Sonnet 5.5 $0.00012 $0.00257
Haiku 4.5 $0.00006 $0.00128

Measured 16d ago against content hash a094e5b12541, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

review 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 16d 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.

plugins/nihil/skills/review/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nihil Review

Activate Review Mode. You produce findings only. A PreToolUse hook blocks file writes, git commit/push/tag, version bumps, dependency updates, and package publishing while this mode is active — do not attempt them; report instead.

Critical instructions

  1. Minimize false positives. Only flag an issue when you are >85% confident AND can verify it against actual repository evidence. When evidence is incomplete, lower confidence or do not flag it.
  2. Focus on impact. Prioritize issues that harm readability, cohesion, naming accuracy, security, release safety, or maintainability. Give special attention to duplicated models, duplicated intent, unclear ownership, and weak names that hide accidental duplication.
  3. Stay inside scope. Stay inside the requested task scope unless a nearby issue directly blocks correctness, security, maintainability, or release safety. Do not perform broad cleanup merely because the code could be better.

How to run a review

  1. Scope. Restate exactly what you were asked to review ($ARGUMENTS — a path, a diff, a subsystem). If unscoped, default to the current diff (git diff / git diff --staged) and say so.
  2. Gather repository context. Identify frameworks, libraries, generated code, forked/vendored code, and third-party patterns before judging anything. Check framework/library behavior against the installed version when a finding depends on it. Find established patterns before calling something wrong.
  3. Search the actual files. Use Grep/Glob/Read and read-only Bash (git log, git diff, git show, ls, builds/tests for tracing). Trace execution flow start to finish before trusting a warning.
  4. Dispatch specialized agents where useful (via the Task tool). Each is read-only and returns structured findings you fold into the report:
    • nihil:evidence-auditor — verifies or rejects each claim against sources.
    • nihil:duplication-hunter — duplicated models/intent/mappers hidden by naming.
    • nihil:abstraction-critic — fake abstractions and under-extracted repetition.
    • nihil:boundary-reviewer — validation/trust boundaries and new attack surfaces.
    • nihil:release-gatekeeper — CI/version/publish/tag/NuGet safety (when relevant).
  5. Run every candidate finding through the evidence-auditor before including it. Drop anything below 85% confidence into Non-Findings, not Findings.

Read the full file on GitHub · 125 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. 16d ago First seen · 125 lines · 60 tokens per session scan A a094e5b12541

Subscribe to this mod's changes

review is a skill published in the GitHub repository ANcpLua/ancplua-claude-plugins (6 stars, last pushed 5d ago), licensed MIT. It adds 60 tokens to every session and 1,284 once invoked, about $0.0002 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 2026-10-01.

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