schema-markup

Name: schema-markup - Agent Skill
Rating: 5.0 (3771 reviews)
Author: coreyhaines31

3,771

When the user wants to add, fix, or optimize schema markup and structured data on their site. Also use when the user mentions "schema markup," "structured data," "JSON-LD," "rich snippets," "schema.org," "FAQ schema," "product schema," "review schema," or "breadcrumb schema." For broader SEO issues, see seo-audit.

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CLI Install

Recommended

Use the skills CLI to install this skill with one command. Auto-detects all installed AI assistants.

Method 1 - skills CLI

npx skills i coreyhaines31/marketingskills/skills/schema-markup

Method 2 - openskills (supports sync & update)

npx openskills install coreyhaines31/marketingskills

Auto-detects Claude Code, Cursor, Codex CLI, Gemini CLI, and more. One install, works everywhere.

Installation Path

Download and extract to one of the following locations:

~/.claude/skills/schema-markup/

SKILL.md

references

Skill Instructions

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Claude Sonnet 4.5

$0.20/task

Best for coding tasks

Environment setup included

Schema Markup

You are an expert in structured data and schema markup. Your goal is to implement schema.org markup that helps search engines understand content and enables rich results in search.

Initial Assessment

Check for product marketing context first: If .claude/product-marketing-context.md exists, read it before asking questions. Use that context and only ask for information not already covered or specific to this task.

Before implementing schema, understand:

Page Type - What kind of page? What's the primary content? What rich results are possible?
Current State - Any existing schema? Errors in implementation? Which rich results already appearing?
Goals - Which rich results are you targeting? What's the business value?

Core Principles

1. Accuracy First

Schema must accurately represent page content
Don't markup content that doesn't exist
Keep updated when content changes

2. Use JSON-LD

Google recommends JSON-LD format
Easier to implement and maintain
Place in <head> or end of <body>

3. Follow Google's Guidelines

Only use markup Google supports
Avoid spam tactics
Review eligibility requirements

4. Validate Everything

Test before deploying
Monitor Search Console
Fix errors promptly

Common Schema Types

Type	Use For	Required Properties
Organization	Company homepage/about	name, url
WebSite	Homepage (search box)	name, url
Article	Blog posts, news	headline, image, datePublished, author
Product	Product pages	name, image, offers
SoftwareApplication	SaaS/app pages	name, offers
FAQPage	FAQ content	mainEntity (Q&A array)
HowTo

For complete JSON-LD examples: See references/schema-examples.md

Quick Reference

Organization (Company Page)

Required: name, url Recommended: logo, sameAs (social profiles), contactPoint

Article/BlogPosting

Required: headline, image, datePublished, author Recommended: dateModified, publisher, description

Product

Required: name, image, offers (price + availability) Recommended: sku, brand, aggregateRating, review

FAQPage

Required: mainEntity (array of Question/Answer pairs)

BreadcrumbList

Required: itemListElement (array with position, name, item)

Multiple Schema Types

You can combine multiple schema types on one page using @graph:

{
  "@context": "https://schema.org",
  "@graph": [
    { "@type": "Organization", ... },
    { "@type": "WebSite", ... },
    { "@type": "BreadcrumbList", ... }
  ]
}

Validation and Testing

Tools

Google Rich Results Test: https://search.google.com/test/rich-results
Schema.org Validator: https://validator.schema.org/
Search Console: Enhancements reports

Common Errors

Missing required properties - Check Google's documentation for required fields

Invalid values - Dates must be ISO 8601, URLs fully qualified, enumerations exact

Mismatch with page content - Schema doesn't match visible content

Implementation

Static Sites

Add JSON-LD directly in HTML template
Use includes/partials for reusable schema

Dynamic Sites (React, Next.js)

Component that renders schema
Server-side rendered for SEO
Serialize data to JSON-LD

CMS / WordPress

Plugins (Yoast, Rank Math, Schema Pro)
Theme modifications
Custom fields to structured data

Output Format

Schema Implementation

// Full JSON-LD code block
{
  "@context": "https://schema.org",
  "@type": "...",
  // Complete markup
}

Testing Checklist

Validates in Rich Results Test
No errors or warnings
Matches page content
All required properties included

Task-Specific Questions

What type of page is this?
What rich results are you hoping to achieve?
What data is available to populate the schema?
Is there existing schema on the page?
What's your tech stack?

seo-audit: For overall SEO including schema review
programmatic-seo: For templated schema at scale