From seo-dungeon
Detects Schema.org markup in pages (JSON-LD, Microdata, RDFa), validates against Google rich results requirements, flags errors/deprecated types, and generates JSON-LD templates for Organization, Product, Article, and more.
npx claudepluginhub avalonreset/seo-dungeon --plugin seo-dungeon[url]This skill uses the workspace's default tool permissions.
1. Scan page source for JSON-LD `<script type="application/ld+json">`
Detects Schema.org markup in pages (JSON-LD, Microdata, RDFa), validates against Google rich results requirements, flags errors/deprecated types, and generates JSON-LD templates for Organization, Product, Article, and more.
Detects, validates, and generates Schema.org structured data in JSON-LD format for SEO rich results. Scans web pages for JSON-LD, Microdata, RDFa; checks properties, errors, and Google guidelines.
Detects, validates, and generates Schema.org structured data (JSON-LD preferred) in HTML using Python scripts for fetching/parsing and ready templates for all schema types.
Share bugs, ideas, or general feedback.
<script type="application/ld+json">itemscope, itemprop)typeof, property)Read 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: Per Google's December 2025 JS SEO guidance, structured data injected via JavaScript may face delayed processing. For time-sensitive markup (especially Product, Offer), include JSON-LD in the initial server-rendered HTML.
When generating schema for a page:
{
"@context": "https://schema.org",
"@type": "Organization",
"name": "[Company Name]",
"url": "[Website URL]",
"logo": "[Logo URL]",
"contactPoint": {
"@type": "ContactPoint",
"telephone": "[Phone]",
"contactType": "customer service"
},
"sameAs": [
"[Facebook URL]",
"[LinkedIn URL]",
"[Twitter URL]"
]
}
{
"@context": "https://schema.org",
"@type": "LocalBusiness",
"name": "[Business Name]",
"address": {
"@type": "PostalAddress",
"streetAddress": "[Street]",
"addressLocality": "[City]",
"addressRegion": "[State]",
"postalCode": "[ZIP]",
"addressCountry": "US"
},
"telephone": "[Phone]",
"openingHours": "Mo-Fr 09:00-17:00",
"geo": {
"@type": "GeoCoordinates",
"latitude": "[Lat]",
"longitude": "[Long]"
}
}
{
"@context": "https://schema.org",
"@type": "Article",
"headline": "[Title]",
"author": {
"@type": "Person",
"name": "[Author Name]"
},
"datePublished": "[YYYY-MM-DD]",
"dateModified": "[YYYY-MM-DD]",
"image": "[Image URL]",
"publisher": {
"@type": "Organization",
"name": "[Publisher]",
"logo": {
"@type": "ImageObject",
"url": "[Logo URL]"
}
}
}
SCHEMA-REPORT.md: detection and validation resultsgenerated-schema.json: ready-to-use JSON-LD snippets| Schema | Type | Status | Issues |
|---|---|---|---|
| ... | ... | ✅/⚠️/❌ | ... |
| Scenario | Action |
|---|---|
| URL unreachable | Report connection error with status code. Suggest verifying URL and checking if the page requires authentication. |
| No schema markup found | Report that no JSON-LD, Microdata, or RDFa was detected. Recommend appropriate schema types based on page content analysis. |
| Invalid JSON-LD syntax | Parse and report specific syntax errors (missing brackets, trailing commas, unquoted keys). Provide corrected JSON-LD output. |
| Deprecated schema type detected | Flag the deprecated type with its retirement date. Recommend the current replacement type or advise removal if no replacement exists. |