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.
git clone --depth 1 https://github.com/Vibe-Marketer/plugins-and-skillsWrote 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.
[](https://agentmods.dev/agents/vibe-marketer/plugins-and-skills/skill-reviewer)<a href="https://agentmods.dev/agents/vibe-marketer/plugins-and-skills/skill-reviewer"><img src="https://agentmods.dev/badge/agents/vibe-marketer/plugins-and-skills/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.
<a href="https://agentmods.dev/agents/vibe-marketer/plugins-and-skills/skill-reviewer"><img src="https://agentmods.dev/badge/agents/vibe-marketer/plugins-and-skills/skill-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00237 | $0.01332 |
| Opus 5 | $0.00118 | $0.00666 |
| Sonnet 5 | $0.00047 | $0.00266 |
| Haiku 4.5 | $0.00024 | $0.00133 |
Grade A, and why
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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.
<step_2 name="validate_structure">
- Frontmatter format: YAML between
---delimiters - Required fields:
name,description - Body content exists and is substantial
- Pure XML structure (no markdown headings in body)
- Required XML tags:
<objective>,<quick_start>,<success_criteria></step_2>
<step_3 name="evaluate_description"> This is the most critical check. Evaluate:
- Trigger phrases: Does description include specific phrases users would say?
- Third person: Uses "This skill should be used when..." not imperative form
- Specificity: Concrete scenarios, not vague categories
- Length: 50-500 chars (not too short, not too long)
- Trigger coverage: Lists specific user queries that should activate the skill
- Target: 90%+ trigger rate on relevant queries </step_3>
<step_4 name="assess_content">
- Line count: SKILL.md body should be under 500 lines (lean, focused)
- Writing style: Imperative/infinitive form in body ("To do X, do Y")
- Organization: Clear sections, logical flow
- Specificity: Concrete guidance, not vague advice
- Conciseness: Only context Claude doesn't already have </step_4>
<step_5 name="check_progressive_disclosure">
- Core SKILL.md: Essential information only, under 500 lines
- references/: Detailed docs moved out of core
- workflows/: Step-by-step procedures separated
- examples/: Working examples separate
- Pointers: SKILL.md references these resources clearly </step_5>
<step_6 name="review_supporting_files"> If present, check:
- references/: quality, relevance, organization, pure XML structure
- examples/: completeness, correctness
- scripts/: executable, documented
- All referenced files actually exist </step_6>
<step_7 name="identify_anti_patterns"> Flag:
- Vague trigger descriptions
- Too much content in SKILL.md (should be in references/)
- Second person in description
- Missing key trigger phrases
- Markdown headings in body (should be XML tags)
- Hybrid XML/markdown structure
- Unclosed XML tags
- Explaining things Claude already knows </step_7>
<output_format>
Skill Review: [skill-name]
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.
- 9d ago First seen · 172 lines · 237 tokens per session scan A ff2c11d213c2
skill-reviewer is an agent published in the GitHub repository Vibe-Marketer/plugins-and-skills (2 stars, last pushed 6mo ago), licensed MIT. It adds 237 tokens to every session and 1,332 once invoked, about $0.0012 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 2026-08-31.
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