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.
npx skills add OpenClaudia/openclaudia-skills --skill schema-markupgit clone --depth 1 https://github.com/OpenClaudia/openclaudia-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/skills/openclaudia/openclaudia-skills/schema-markup)<a href="https://agentmods.dev/skills/openclaudia/openclaudia-skills/schema-markup"><img src="https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/schema-markup/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/skills/openclaudia/openclaudia-skills/schema-markup"><img src="https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/schema-markup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Output Handling · line 553 Model output is used without validation or sanitization. Unvalidated output injected into downstream contexts (SQL, shell, HTML) enables injection attacks and arbitrary code execution.Fix: Validate and sanitize all model output before using it in downstream contexts. Use parameterized queries for SQL, shell quoting for commands, and HTML encoding for web output.
- high Output Handling · line 573 Model output is used without validation or sanitization. Unvalidated output injected into downstream contexts (SQL, shell, HTML) enables injection attacks and arbitrary code execution.Fix: Validate and sanitize all model output before using it in downstream contexts. Use parameterized queries for SQL, shell quoting for commands, and HTML encoding for web output.
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 | $0.00082 | $0.04444 |
| Opus 5 | $0.00041 | $0.02222 |
| Sonnet 5 | $0.00016 | $0.00889 |
| Haiku 4.5 | $0.00008 | $0.00444 |
Grade A, and why
schema-markup 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 12d 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 — 609 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Schema Markup Generator Skill
You are an expert in Schema.org structured data and Google's rich results requirements. Generate valid, complete JSON-LD markup that maximizes eligibility for Google rich results.
Supported Schema Types
This skill supports the following schema types. When the user asks for schema, determine which type(s) are appropriate based on the page content.
1. Article / BlogPosting / NewsArticle
Use for: Blog posts, news articles, editorial content Rich result: Article carousel, headline in search
{
"@context": "https://schema.org",
"@type": "Article",
"headline": "Your Article Title (max 110 characters)",
"description": "Brief description of the article (max 160 characters)",
"image": [
"https://example.com/image-16x9.jpg",
"https://example.com/image-4x3.jpg",
"https://example.com/image-1x1.jpg"
],
"datePublished": "2025-01-15T08:00:00+00:00",
"dateModified": "2025-01-20T10:30:00+00:00",
"author": [{
"@type": "Person",
"name": "Author Name",
"url": "https://example.com/author/name",
"jobTitle": "Senior Editor",
"sameAs": [
"https://twitter.com/authorhandle",
"https://linkedin.com/in/authorname"
]
}],
"publisher": {
"@type": "Organization",
"name": "Publisher Name",
"logo": {
"@type": "ImageObject",
"url": "https://example.com/logo.png",
"width": 600,
"height": 60
}
},
"mainEntityOfPage": {
"@type": "WebPage",
"@id": "https://example.com/article-url"
},
"wordCount": 2500,
"articleSection": "Technology",
"keywords": ["keyword1", "keyword2", "keyword3"],
"isAccessibleForFree": true
}
Google requirements:
headlineis required (max 110 characters)imageis required (provide 3 aspect ratios: 16:9, 4:3, 1:1; each > 696px wide)datePublishedis required (ISO 8601 format)author.nameis required- For
NewsArticle, also adddatelineif applicable - For
BlogPosting,@typechanges to"BlogPosting"
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.
- 12d ago First seen · 609 lines · 82 tokens per session scan A 4e3a29b9d8d9
schema-markup is a skill published in the GitHub repository OpenClaudia/openclaudia-skills (689 stars, last pushed today), licensed MIT. It adds 82 tokens to every session and 4,444 once invoked, about $0.0004 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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