skill-review

skill-review is a skill for Claude Code, Codex from stacklok/toolhive-catalog. It costs 68 tokens per session (2,596 once invoked), scanned A, original, Apache-2.0.

A review process for checking coding-agent skill submissions and updates. It examines their files, instructions, security, quality, and suitability for a shared registry.

In plain words
What is it for?
Use it to review new or updated skill packages, including their skill metadata, main instructions, repository content, and requested changes.
Why use it?
It helps catch missing files, invalid metadata, unsafe instructions, unclear behaviour, and other problems before a skill is accepted.

Skill for Claude CodeCodex

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 skills/stacklok/toolhive-catalog/skill-review
Any agent
npx skills add stacklok/toolhive-catalog --skill skill-review
Clone the repo
git clone --depth 1 https://github.com/stacklok/toolhive-catalog

Made for: Claude Code, Codex.

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/stacklok/toolhive-catalog/skill-review.svg)](https://agentmods.dev/skills/stacklok/toolhive-catalog/skill-review)
Your own site
<a href="https://agentmods.dev/skills/stacklok/toolhive-catalog/skill-review"><img src="https://agentmods.dev/badge/skills/stacklok/toolhive-catalog/skill-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,596 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 $0.00068 $0.02596
Opus 5 $0.00034 $0.01298
Sonnet 5 $0.00014 $0.00519
Haiku 4.5 $0.00007 $0.00260

Measured 4d ago against content hash 9e1bc5ac6bf9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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/skills/skill-review/SKILL.md · 257 lines

How it starts

The opening of the file, as written. The whole thing — 257 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Submission Review

You are an expert reviewer for the ToolHive Registry. Evaluate skill submissions for spec compliance, security, registry inclusion criteria, prompt quality, and completeness.

For skill.json field specs, see skill-json-spec.md. For registry inclusion criteria, see registry-criteria.md and skill-criteria.md.

Review Workflow

Step 1: Identify Change Scope

Determine what you're reviewing:

  • New skill submission -- Full review (spec + content + repository assessment + inclusion criteria)
  • Version update -- Focused review (changed fields, prompt diffs, scope changes, skill shadowing)
  • Config change -- Targeted review (just the changed aspects + security implications)

Step 2: Validate Directory Structure

Check the skill directory at registries/toolhive/skills/<name>/:

  1. Required files -- skill.json, icon.svg, and skill/SKILL.md must all exist
  2. Subfolder separation -- installable content lives in skill/; registry metadata (skill.json, icon.svg) at root
  3. No stray files -- only recognized directories inside skill/ (scripts/, references/, assets/)

Step 3: Validate skill.json

Read the skill.json and check:

  1. Required fields -- namespace, name, description, version, packages all present
  2. Name format -- lowercase letters, numbers, hyphens only; matches directory name
  3. Name consistency -- name in skill.json matches name in SKILL.md frontmatter
  4. Namespace -- valid reverse-DNS (e.g., io.github.stacklok)
  5. Version -- semantic versioning format (e.g., 0.1.0)
  6. Packages -- at least one entry with valid registryType (oci or git)
  7. Subfolder path -- packages[].subfolder ends with /skill (points to skill content, not root)
  8. Icons -- icons array present with icon.svg reference
  9. allowedTools -- if present, lists tools as server/tool_name format
  10. No auto-populated fields -- reject if metadata contains CI-populated data in new submissions

Read the full file on GitHub · 257 lines

Files

What ships with it

3 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. 4d ago First seen · 257 lines · 68 tokens per session scan A 9e1bc5ac6bf9

Subscribe to this mod's changes

skill-review is a skill published in the GitHub repository stacklok/toolhive-catalog (22 stars, last pushed today), licensed Apache-2.0. It adds 68 tokens to every session and 2,596 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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