Borrowing it
Nothing to install: this file belongs to harukiseller-droid/commerce-agent-bench. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/harukiseller-droid/commerce-agent-bench/main/.agents/skills/schema-validator/SKILL.mdgit clone --depth 1 https://github.com/harukiseller-droid/commerce-agent-benchWrote 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/harukiseller-droid/commerce-agent-bench/schema-validator)<a href="https://agentmods.dev/skills/harukiseller-droid/commerce-agent-bench/schema-validator"><img src="https://agentmods.dev/badge/skills/harukiseller-droid/commerce-agent-bench/schema-validator/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/harukiseller-droid/commerce-agent-bench/schema-validator"><img src="https://agentmods.dev/badge/skills/harukiseller-droid/commerce-agent-bench/schema-validator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00018 | $0.00292 |
| Opus 5 | $0.00009 | $0.00146 |
| Sonnet 5 | $0.00004 | $0.00058 |
| Haiku 4.5 | $0.00002 | $0.00029 |
Grade A, and why
schema-validator 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.
What it actually says
Schema Validator
Purpose
Validate structured data against visible page content and verified runtime or merchant data.
When to use
Use when reviewing Product, Offer, AggregateRating, BreadcrumbList, Organization, WebSite, or related structured data.
Inputs
- JSON-LD, HTML, or template source;
- visible page values and runtime data when available;
- the expected schema type and route scope.
Required checks
- Trace every commercial value to runtime or verified merchant data.
- Do not synthesize ratings, review counts, prices, stock, GTINs, SKUs, materials, or shipping details.
- Check duplicate Product graphs and conflicting offers.
- Treat a value that only exists in schema, but not in a verified source, as unsupported.
- Prefer removal of unsupported properties over invented completion.
Output contract
Report each issue using the PROTOCOL.md finding contract and identify the exact property and evidence path.
Failure conditions
- Missing source or runtime evidence: mark the property
UNKNOWNor unsupported. - Never invent ratings, review counts, prices, stock, GTINs, SKUs, materials, or shipping details.
- Do not call a graph valid solely because it parses as JSON.
Verification
Run schema fixtures and deterministic evals; compare emitted properties with visible or verified values.
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 · 41 lines · 18 tokens per session scan A 373e486b0e28
schema-validator is a skill published in the GitHub repository harukiseller-droid/commerce-agent-bench (102 stars, last pushed 28d ago), licensed MIT. It adds 18 tokens to every session and 292 once invoked, about $0.0001 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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