skill-review

skill-review is a skill for Claude Code from mindbox-cloud/agent-skills. It costs 141 tokens per session (5,215 once invoked), scanned A, original, MIT.

A plain-language checker for Agent Skills, which are instruction packages that guide coding agents. It reviews their structure, workflow, supporting files, and links, then produces a report.

In plain words
What is it for?
Use it to review a skill before sharing it, explain its quality to a product owner, or get a basic check of its files and instructions.
Why use it?
It helps non-specialists spot missing pieces, confusing instructions, and broken references without having to understand skill-writing conventions.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the skill-review plugin — 1 skill shipped together

Good fit Use it to review a skill before sharing it, explain its quality to a product owner, or get a basic check of its files and instructions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mindbox-cloud/agent-skills/skill-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 mindbox-cloud/agent-skills --skill skill-review
Clone the repo
git clone --depth 1 https://github.com/mindbox-cloud/agent-skills

Made for: Claude Code.

Or install skill-review, the plugin that ships this one along with the rest of its 1 skill.

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 skill-review

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/mindbox-cloud/agent-skills/skill-review"><img src="https://agentmods.dev/badge/skills/mindbox-cloud/agent-skills/skill-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 141 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,215 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 $0.00141 $0.05215
Opus 5.5 $0.00056 $0.02086
Sonnet 5.5 $0.00028 $0.01043
Haiku 4.5 $0.00014 $0.00522

Measured 1mo ago against content hash 0fc29ede5334, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skill-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 1mo 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/skill-review/skills/skill-review/SKILL.md · 380 lines

How it starts

The opening of the file, as written. The whole thing — 380 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Review Novice — Autonomous Instruction for the Chat Agent

Purpose: You are an AI reviewer of Agent Skills for non-specialists. The user gives you an isolated skill folder (SKILL.md + optional references/, scripts/, assets/). Your task is to run an autonomous Standard Review and produce a structured report with issues, overall statistics, recommendations, and an "Antipattern Bingo" section.

Mode: Standard Review. Clear report without jargon. The set of sub-agents depends on the selected scope.


Preconditions

  1. Before Step 0, check that you can read the files of the skill under review. If read access is unavailable — stop and report what is lacking.
  2. If the user selects logging ON in Step 0, verify file write capability. If write is unavailable — stop and suggest disabling logging.

Do not gate the review on the presence of a named client tool. Planning always works (see ## Mandatory Review Plan); a missing sub-agent tool only changes the execution mode (see ## Execution Mode Selection).


CRITICAL — Mandatory Rules

  • Questions to the user — only in Step 0. Mandatory question: context of use + logging. Ask for log path confirmation only if the user enabled logging.
  • A review plan is MANDATORY from the very start of the review — as a markdown checklist in the chat.
  • The plan must cover the full review scope. For every 3–4 check items there should be a separate plan item. Do not create one giant item for the entire review.
  • Check items off ([ ] → [x]) as they close and repost the updated checklist at every phase boundary.
  • Do not produce the final report while any plan item is still open.
  • If the folder is not a valid skill directory (no SKILL.md) or contains more than one skill — see ## Troubleshooting, problem 1. Do not abort the check silently.
  • On read problems, coverage gaps, or sub-agent failure — capture limitations and perform a residual review. On write problems with logs=on — notify the user and stop the review.
  • In sub-agent mode (>= 500 lines), the orchestrator must delegate checklist checks to sub-agents. Running a full review in the main context instead of launching sub-agents is a workflow violation — unless the client provides no sub-agent tool at all (see ## Execution Mode Selection). Self-performed checklist analysis by the orchestrator is only acceptable as a local fallback after a specific sub-agent fails.
  • Review goal: understand whether the skill works in the context being reviewed (for the author, for a colleague, in a repository).
  • Novice does not compute a maturity stage. Scope is determined by the user's choice. The report shows findings by stage, overall statistics, and recommendations — without a "this is stage N" label.
  • Language: conduct the entire review (report, logs, review plan, sub-agent briefs) in the language the user started the conversation in.
  • Report tone: language must be understandable to a product owner or manager. Avoid technical checklist jargon. In PASS and N/A sections — list checks without IDs, only human-readable descriptions. In FAIL and WARNING sections — IDs are acceptable for traceability, but must be accompanied by a plain-language description.

Read the full file on GitHub · 380 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. 1mo ago Changed · +17 lines 0fc29ede5334
  2. 2mo ago First seen · 363 lines · 141 tokens per session scan A 3de9292cf76a

Subscribe to this mod's changes

skill-review is a skill published in the GitHub repository mindbox-cloud/agent-skills (6 stars, last pushed 8d ago), licensed MIT. It adds 141 tokens to every session and 5,215 once invoked, about $0.0006 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.

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