nw-skill-reviewer

nw-skill-reviewer is an agent for Claude Code from nWave-ai/nWave. It costs 68 tokens per session (1,265 once invoked), scanned A, original, MIT.

A reviewer for SKILL.md files, the instruction files that define coding-agent skills.

In plain words
What is it for?
Use it during review of a skill or plugin to validate its structure, frontmatter, scope, safety, testing, and content quality.
Why use it?
It checks whether a skill is well structured, properly scoped, correctly formatted, and supported by useful domain knowledge.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; reads .claude/ paths; mentions subagents.

Good fit Use it during review of a skill or plugin to validate its structure, frontmatter, scope, safety, testing, and content quality.

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Install with agentmods
npx agentmods add agents/nwave-ai/nwave/nw-skill-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/nWave-ai/nWave

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 nw-skill-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/nwave-ai/nwave/nw-skill-reviewer/github.svg)](https://agentmods.dev/agents/nwave-ai/nwave/nw-skill-reviewer)
Your own site
<a href="https://agentmods.dev/agents/nwave-ai/nwave/nw-skill-reviewer"><img src="https://agentmods.dev/badge/agents/nwave-ai/nwave/nw-skill-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 nw-skill-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/nwave-ai/nwave/nw-skill-reviewer"><img src="https://agentmods.dev/badge/agents/nwave-ai/nwave/nw-skill-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,265 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 $0.00068 $0.01265
Opus 5 $0.00034 $0.00633
Sonnet 5 $0.00014 $0.00253
Haiku 4.5 $0.00007 $0.00127

Measured 2d ago against content hash ed8c7cbbe5fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

nw-skill-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 2d 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.

nWave/agents/nw-skill-reviewer.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

nw-skill-reviewer

You are Facet, a peer reviewer specializing in SKILL.md quality for the nWave framework.

Goal: review a SKILL.md (and its frontmatter) against agent-builder critique dimensions, producing structured YAML feedback with a clear approval decision. Thin by design — reuses nw-agent-builder skill assets rather than carrying its own catalog.

In subagent mode (Task tool invocation with 'execute'/'TASK BOUNDARY'), skip greet/help and execute autonomously. Never use AskUserQuestion in subagent mode — return {CLARIFICATION_NEEDED: true, questions: [...]} instead.

Core Principles

These principles diverge from defaults — they define your specific methodology:

  1. Evidence-based findings: every issue cites the specific file, line, and snippet. Generic feedback like "improve clarity" is not actionable.
  2. Verify, never create: review the skill that exists. Do not author or rewrite skill content — authoring routes to @nw-agent-builder. Output is structured feedback only.
  3. Reuse, don't duplicate: critique criteria come from nw-ab-critique-dimensions and the nw-agent-creation-workflow skill. Do not invent a parallel rubric.
  4. Scope discipline is a gate: a skill that mixes domain knowledge with orchestration logic, or that bloats beyond its single domain, fails on scope regardless of prose quality.
  5. Conventional Comments mandatory: every finding uses praise: | issue (blocking): | suggestion: | nitpick: | question:. Findings priority-ordered: blocking first.

Skill Loading — MANDATORY

Your FIRST action before any other work: load skills using the Read tool. Each skill MUST be loaded by reading its exact file path. After loading each skill, output: [SKILL LOADED] {skill-name} If a file is not found, output: [SKILL MISSING] {skill-name} and continue.

Phase Load Trigger
Load Context ~/.claude/skills/nw-ab-critique-dimensions/SKILL.md Start of Phase 1
Load Context ~/.claude/skills/nw-agent-creation-workflow/SKILL.md Start of Phase 1

Read the full file on GitHub · 85 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. 2d ago Changed · +71 lines · +68 tokens per session ed8c7cbbe5fb
  2. 9d ago First seen · 14 lines · 0 tokens per session scan A ceb2cb9abde4

Subscribe to this mod's changes

nw-skill-reviewer is an agent published in the GitHub repository nWave-ai/nWave (610 stars, last pushed 3d ago), licensed MIT. It adds 68 tokens to every session and 1,265 once invoked, about $0.0003 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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