What is schema-markup?

SEOエージェントが高度なスキーママークアップと構造化データの最適化を必要とする場合に最適です。 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.

How do I install schema-markup?

Run the command: npx killer-skills add gracefullight/pkgs. It works with Cursor, Windsurf, VS Code, Claude Code, and 19+ other IDEs.

What are the use cases for schema-markup?

Key use cases include: 検索エンジンのクローラー用のウェブサイトコンテンツを最適化する, 製品ページと記事のスキーママークアップを生成する, 検索エンジンの結果でリッチスニペットの問題をデバッグする.

Which IDEs are compatible with schema-markup?

This skill is compatible with Cursor, Windsurf, VS Code, Trae, Claude Code, OpenClaw, Aider, Codex, OpenCode, Goose, Cline, Roo Code, Kiro, Augment Code, Continue, GitHub Copilot, Sourcegraph Cody, and Amazon Q Developer. Use the Killer-Skills CLI for universal one-command installation.

Are there any limitations for schema-markup?

JSON-LDとschema.orgの語彙の知識が必要. 既存のコンテンツと構造を持つウェブサイトのみに限定.

schema-markup

Install schema-markup, an AI agent skill for AI agent workflows and automation. Works with Claude Code, Cursor, and Windsurf with one-command setup.

SKILL.md

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Imported Repository Instructions

The section below is supporting source material from the upstream repository. Use the Killer-Skills review above as the primary decision layer.

Supporting Evidence

Schema Markup

Name: schema-markup
Availability: InStock
Author: gracefullight

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	Tutorials	name, step
BreadcrumbList	Any page with breadcrumbs	itemListElement
LocalBusiness	Local business pages	name, address
Event	Events, webinars	name, startDate, location

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:

json
1{
2  "@context": "https://schema.org",
3  "@graph": [
4    { "@type": "Organization", ... },
5    { "@type": "WebSite", ... },
6    { "@type": "BreadcrumbList", ... }
7  ]
8}

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

json
1// Full JSON-LD code block
2{
3  "@context": "https://schema.org",
4  "@type": "...",
5  // Complete markup
6}

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

schema-markup — angular schema-markup, community, angular, ide skills, astrology, cafe24, citation, divination, fortune-telling, four-pillars, Claude Code

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