Installation
$npx skills add lionkiii/claude-seo-skills --skill seo-schemaSummary
Scan pages for schema markup in JSON-LD, Microdata, and RDFa formats; validate against Google's supported rich result types and current restrictions; generate valid JSON-LD snippets with traffic prioritization via Ahrefs integration. Invoke when a user needs to audit schema implementation, fix validation errors, or add markup to pages.
SKILL.MD
Schema Markup Analysis & Generation
Detection
- Scan page source for JSON-LD
<script type="application/ld+json"> - Check for Microdata (
itemscope,itemprop) - Check for RDFa (
typeof,property) - Always recommend JSON-LD as primary format (Google's stated preference)
Validation
- Check required properties per schema type
- Validate against Google's supported rich result types
- Test for common errors:
- Missing @context
- Invalid @type
- Wrong data types
- Placeholder text
- Relative URLs (should be absolute)
- Invalid date formats
- Flag deprecated types (see below)
Schema Type Status (as of Feb 2026)
Read references/schema-types.md for the full list. Key rules:
ACTIVE — recommend freely:
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
VIDEO & SPECIALIZED — recommend freely:
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.
RESTRICTED — only for specific sites:
- FAQ: ONLY for government and healthcare authority sites (restricted Aug 2023)
DEPRECATED — never recommend:
- HowTo: Rich results removed September 2023
- SpecialAnnouncement: Deprecated July 31, 2025
- CourseInfo, EstimatedSalary, LearningVideo: Retired June 2025
- ClaimReview: Retired from rich results June 2025
- VehicleListing: Retired from rich results June 2025
- Practice Problem: Retired from rich results late 2025
- Dataset: Retired from rich results late 2025
- Book Actions: Deprecated then reversed — still functional as of Feb 2026 (historical note)
Generation
When generating schema for a page:
- Identify page type from content analysis
- Select appropriate schema type(s)
- Generate valid JSON-LD with all required + recommended properties
- Include only truthful, verifiable data — use placeholders clearly marked for user to fill
- Validate output before presenting
Common Schema Templates
Organization
{
"@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]"
]
}
LocalBusiness
{
"@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]"
}
}
Article/BlogPosting
{
"@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]"
}
}
}
Output
SCHEMA-REPORT.md— detection and validation resultsgenerated-schema.json— ready-to-use JSON-LD snippets
Validation Results
| Schema | Type | Status | Issues |
|---|---|---|---|
| ... | ... | ✅/⚠️/❌ | ... |
Recommendations
- Missing schema opportunities
- Validation fixes needed
- Generated code for implementation
Live Data Insights (MCP Overlay)
@skills/seo/references/mcp-degradation.md
Ahrefs Traffic Prioritization
If Ahrefs available: Use ToolSearch with query "+ahrefs" to check availability.
- If Ahrefs MCP tools are returned: fetch
site-explorer-top-pagesfor the domain to identify highest-traffic pages. - Add
### Schema Priority by Trafficsection showing which pages receive the most organic traffic and their current schema status — prioritize schema implementation on these pages first. - Pages with high traffic but missing schema are the highest-impact opportunities.
- If Ahrefs MCP is not available: proceed with static schema analysis only, noting that traffic-based prioritization is unavailable.
Schema Priority by Traffic (when Ahrefs available)
| Page | Monthly Visits | Schema Status | Priority |
|---|---|---|---|
| [top page 1] | [visits] | [present/missing] | [High/Medium/Low] |
| [top page 2] | [visits] | [present/missing] | [High/Medium/Low] |
Prioritization logic: pages with >1,000 monthly visits and missing schema are Critical priority. Pages with >500 visits and incomplete schema are High priority.
Data Sources
| Source | Status | Data Provided |
|---|---|---|
| Static HTML Analysis | Always available | Schema detection, validation, type checking |
Ahrefs MCP (+ahrefs) | If connected | Top-pages traffic data for schema prioritization |