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Postalocity
PostalocityOFFICIAL
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seo-schema

Detect, validate, and generate Schema.org JSON-LD from HTML pages.

1|Updated Mar 5, 2026
Search Tags:#validation#structured-data#schema.org#markup#json-ld#detect
One-click install
npx skills add https://github.com/Postalocity/template-microsite --skill seo-schema-postalocity
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: seo-schema
Source: https://github.com/Postalocity/template-microsite/tree/main/.opencode/integrations/claude-seo/seo-schema
Command: npx skills add https://github.com/Postalocity/template-microsite --skill seo-schema-postalocity

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Automatically detect schema markup on webpages, validate its correctness, and generate accurate JSON-LD or other Schema.org data to improve search visibility and reduce structured data errors.

Core Features & Use Cases

  • Automatic detection of JSON-LD, Microdata, and RDFa
  • Validation against required properties and supported schema types
  • Generation of ready-to-use JSON-LD templates for common types (Organization, LocalBusiness, Article, Product, etc.)

Quick Start

Provide the page URL and receive ready JSON-LD markup for the appropriate Schema.org types.

Frequently Asked Questions about seo-schema

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I validate Schema.org structured data on a webpage?▼

To validate Schema.org structured data, the Skill detects existing JSON-LD, Microdata, or RDFa markup on your webpage and checks it against required properties and supported schema types to identify errors. It returns validation results highlighting missing or incorrect properties.

How do I generate JSON-LD markup for an Article or Product page?▼

You can generate JSON-LD markup by providing the page URL to the Skill. It outputs ready-to-use JSON-LD templates populated with required and recommended properties for common types like Article, Product, Organization, and LocalBusiness.

Can I detect Microdata and RDFa alongside JSON-LD on the same website?▼

Yes, the Skill automatically detects JSON-LD, Microdata, and RDFa formats simultaneously. It scans the HTML page to identify all existing structured data markup formats and validates them against schema types.

What is the best way to add structured data for rich results across CMS pages?▼

The best way is to use the Skill to detect existing markup, validate it, and generate valid JSON-LD with required and recommended properties. This ensures your articles, products, and organization pages have accurate structured data for rich results.

Why does my structured data fail validation for required schema properties?▼

Structured data fails validation when required properties are missing or incorrectly formatted. The Skill checks your JSON-LD, Microdata, or RDFa against supported schema types and identifies exactly which required and recommended properties need correction.

Does the seo-schema Skill work with any HTML page?▼

Yes, the Skill works with any HTML page URL provided as input. It detects existing structured data formats, validates them against schema types, and generates appropriate JSON-LD markup regardless of the underlying CMS or website platform.

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