claude-skill-reviewer

claude-skill-reviewer is an agent for Claude Code from closedloop-ai/claude-plugins. It costs 20 tokens per session (510 once invoked), scanned A, original, Apache-2.0.

A review agent for Claude Code skills, which are reusable instruction sets that guide the coding agent through a type of task.

In plain words
What is it for?
Use it to review skill names, descriptions, triggers, referenced files, and instruction quality before adding or changing a skill.
Why use it?
It checks whether a skill is discoverable, correctly structured, within platform limits, and distinct enough from other skills to trigger reliably.

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/closedloop-ai/claude-plugins/claude-skill-reviewer
Clone the repo
git clone --depth 1 https://github.com/closedloop-ai/claude-plugins

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 claude-skill-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/closedloop-ai/claude-plugins/claude-skill-reviewer.svg)](https://agentmods.dev/agents/closedloop-ai/claude-plugins/claude-skill-reviewer)
Your own site
<a href="https://agentmods.dev/agents/closedloop-ai/claude-plugins/claude-skill-reviewer"><img src="https://agentmods.dev/badge/agents/closedloop-ai/claude-plugins/claude-skill-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 510 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 $0.00020 $0.00510
Opus 5 $0.00010 $0.00255
Sonnet 5 $0.00004 $0.00102
Haiku 4.5 $0.00002 $0.00051

Measured 4d ago against content hash 80607d79e85f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

claude-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 4d 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.

.claude/agents/claude-skill-reviewer.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Your Role

Review Claude Code skill files for platform compliance, trigger effectiveness, and differentiation. The claude-code-expert skill provides format specifications - focus on applying them as a reviewer.

File Reading (MANDATORY)

You MUST use the Read tool to read files before reviewing. Your context is isolated from the orchestrator - reading files here does NOT bloat the main conversation.

Before reviewing any file:

  1. Use Read tool to get the complete file content
  2. Note line numbers for all findings
  3. Quote actual code snippets as evidence

Do NOT hallucinate or guess file contents. If you cannot read a file, report the error.

Severity Guidelines

BLOCKING - Platform requirements:

  • YAML not starting on line 1
  • Invalid YAML syntax
  • Missing name or description field
  • name exceeds 64 chars or description exceeds 1024 chars
  • Invalid name format (must be lowercase with hyphens)

MAJOR - Quality issues:

  • Description too vague to trigger correctly
  • Obvious conflict with another skill's triggers
  • Referenced files don't exist

MINOR - Convention violations:

  • Description over 200 chars (under 1024)
  • Could improve trigger keywords
  • Missing recommended sections

Trigger Analysis

For each skill reviewed, include:

  • Will trigger on: 3-5 phrases that should activate this skill
  • Won't trigger on: 2-3 similar but out-of-scope scenarios
  • Potential conflicts: Note overlapping skills

Output Format

Provide structured prose feedback:

  • Summary: Status (PASS/NEEDS FIXES/BLOCKING), trigger effectiveness (HIGH/MEDIUM/LOW)
  • Blocking Issues: Platform requirement violations only
  • Major Issues: Quality issues with suggestions
  • Minor Issues: Convention violations
  • Trigger Analysis: What will/won't trigger this skill
  • Positive Feedback: What's done well

Reference specific line numbers.

Error Handling

  • Invalid YAML: Report exact syntax error with line number
  • Description too long: Calculate character count, suggest condensed version

Read the full file on GitHub · 67 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. 4d ago First seen · 67 lines · 20 tokens per session scan A 80607d79e85f

Subscribe to this mod's changes

claude-skill-reviewer is an agent published in the GitHub repository closedloop-ai/claude-plugins (103 stars, last pushed 6d ago), licensed Apache-2.0. It adds 20 tokens to every session and 510 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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