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Detect, validate, and generate Schema.org structured data. JSON-LD format preferred.
Passed 23 of 23 test cases with the skill, and 16 of 23 without it.
and 7 more in the full report
7 fixed16 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.6-flash on 10/2/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
We sell adult novelty products online and need to update our e-commerce product schema to comply with explicit content markup standards. What specific property and URI value must be added to our Product schema?
| Checked | Without skill | With skill |
|---|---|---|
| The generated markup includes the hasAdultConsideration property. | Passed | Passed |
| The property value is set to https://schema.org/SexualContentConsideration. | Missed | Passed |
The instructions your model reads when the skill loads.
"${CLAUDE_PLUGIN_ROOT}/scripts/claude-seo" run parse_html.py --url <url> --json
(or scan <script type="application/ld+json"> in the page source). Flag any
block without @context or @type: Google cannot attach it to an entity (a
rating in such a block does not reach the Product).itemscope, itemprop)typeof, property)Read ../seo/references/schema-types.md for the full list. Key rules:
Organization, LocalBusiness, SoftwareApplication, WebApplication, Product (with Certification markup as of April 2025), ProductGroup, Offer, Service, Article, BlogPosting, NewsArticle, Review, AggregateRating, BreadcrumbList, WebSite, WebPage, Person, ProfilePage, ContactPage, VideoObject, ImageObject, Event, JobPosting, Course, DiscussionForumPosting
BroadcastEvent, Clip, SeekToAction, SoftwareSourceCode
See schema/templates.json for ready-to-use JSON-LD templates for these types.
JSON-LD and JavaScript rendering: Google supports structured data generated with JavaScript, but its "Generate structured data with JavaScript" guide (last updated 2025-12-10) warns that dynamically generated Product markup can make Shopping crawls less frequent and less reliable for fast-changing price and availability. For time-sensitive markup (especially Product, Offer), include JSON-LD in the initial server-rendered HTML.
test cases passed, vs 16 / 23 without
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