skill-review

skill-review is a skill for Claude Code from marcoguillermaz/Tierward. It costs 0 tokens per session (3,071 once invoked), scanned A, original, MIT.

A structured review process for checking the quality and behavior of a coding-agent skill.

In plain words
What is it for?
Use it to run preflight checks, inspect a skill's structure, walk through its behavior, review test fixtures, and complete integration and closeout steps.
Why use it?
It gives reviewers defined stages and stopping points, so problems can be recorded and fixes are made only after approval.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; reads .claude/ paths; names the AskUserQuestion tool.

Part of the tierward plugin — 29 skills, 1 command, 1 hook, 1 MCP server shipped together

Good fit Use it to run preflight checks, inspect a skill's structure, walk through its behavior, review test fixtures, and complete integration and closeout steps.

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

Made for: Claude Code.

Or install tierward, the plugin that ships this one along with the rest of its 29 skills, 1 command, 1 hook, 1 MCP server.

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/marcoguillermaz/tierward/skill-review/github.svg)](https://agentmods.dev/skills/marcoguillermaz/tierward/skill-review)
Your own site
<a href="https://agentmods.dev/skills/marcoguillermaz/tierward/skill-review"><img src="https://agentmods.dev/badge/skills/marcoguillermaz/tierward/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/marcoguillermaz/tierward/skill-review"><img src="https://agentmods.dev/badge/skills/marcoguillermaz/tierward/skill-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,071 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 $0.00000 $0.03071
Opus 5 $0.00000 $0.01536
Sonnet 5 $0.00000 $0.00614
Haiku 4.5 $0.00000 $0.00307

Measured 11d ago against content hash ecec4ba415ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, 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 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.

packages/cli/templates/tier-l/.claude/skills/skill-review/SKILL.md · 260 lines

How it starts

The opening of the file, as written. The whole thing — 260 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a skill-quality reviewer running the framework v1.2 pipeline. Your job: orchestrate the review end-to-end, enforce STOP gates, and keep the reviewer (user) calibrated across the cycle. You produce findings - you do not silently fix. Fixes happen in Phase 3 after explicit user Go.

Arguments

  • skill-name (required): target skill directory name (e.g. ui-audit, security-audit).
  • tier (optional, default all): which tier variants to review. all triggers cross-tier family review per framework §Phase 2.B.
  • mode (optional, default full): full runs all phases; preflight-only stops after Phase 1; fixtures-only runs only Phase 2.E behavioral fixtures (for the 11 stack-dependent skills targeted by D1 + P3.2 — canonical list in SKILLS_INVENTORY.md § Behavioral fixture targets).

Supporting documents (load order at cycle-start)

Before Phase 1, read these in order. They are siblings of this file.

  1. REVIEW_FRAMEWORK.md - the pipeline definition. Source of truth for phase boundaries, STOP gates, closing criteria.
  2. SEVERITY_SCALE.md (P2) - severity rubric. Required reading before every Phase 2 finding.
  3. SPEC_SNAPSHOT.md (P4) - Anthropic spec frozen reference. Used by Phase 1 C1-C8.
  4. SKILLS_INVENTORY.md (P3) - canonical skill list + coverage check + review ordering. Gate for cycle start.
  5. CALIBRATION_KIT.md (P5) - anchor catalog + drift detection. Read at cycle-start and at Phase 9 midpoint.

When to use

  • Auditing a single skill against Anthropic spec + internal quality rubric.
  • Running a portfolio review across all skills in .claude/skills/ (invoke once per skill, following the review ordering in SKILLS_INVENTORY.md).
  • Re-scoring a skill at Phase 9 midpoint to detect reviewer drift.

When NOT to use

  • Quick mechanical linting (use grep + wc -l directly).
  • Skill authoring from scratch (use /skill-dev instead).
  • Runtime finding triage in a user project (this skill reviews the skill itself, not its output).

Read the full file on GitHub · 260 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 First seen · 260 lines · 0 tokens per session scan A ecec4ba415ba

Subscribe to this mod's changes

skill-review is a skill published in the GitHub repository marcoguillermaz/Tierward (4 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 3,071 tokens. 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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