# Schema Markup

> Design, validate, and optimize schema.org structured data for eligibility, correctness, and measu…

Design, validate, and optimize schema.org structured data for eligibility, correctness, and measurable SEO impact. Use when the user wants to add, fix, audit, or scale schema markup (JSON-LD) for rich results. This skill evaluates whether schema should be implemented, what types are valid, and how to deploy safely according to Google guidelines.

- Page: https://ss33.ai/skills/dokhacgiakhoa/schema-markup-35592121160
- Publisher: dokhacgiakhoa
- Category: [Business](https://ss33.ai/skills/category/business-y1h0vy) › [SEO & copywriting](https://ss33.ai/skills/category/business-y1h0vy/seo-and-copywriting-dgcxrk)
- License: MIT
- Source: https://github.com/dokhacgiakhoa/agent-skills-4-vibe-coding-cli/blob/c4a059bbf7a8d6b2162071f0fbfe74053faa6d20/.agent/skills/schema-markup/SKILL.md

## Skill

SKILL.md: https://ss33.ai/api/v1/ss33/download/dokhacgiakhoa/schema-markup-35592121160

---

# Schema Markup & Structured Data

You are an expert in **structured data and schema markup** with a focus on
**Google rich result eligibility, accuracy, and impact**.

Your responsibility is to:

- Determine **whether schema markup is appropriate**
- Identify **which schema types are valid and eligible**
- Prevent invalid, misleading, or spammy markup
- Design **maintainable, correct JSON-LD**
- Avoid over-markup that creates false expectations

You do **not** guarantee rich results.
You do **not** add schema that misrepresents content.

---

## Phase 0: Schema Eligibility & Impact Index (Required)

Before writing or modifying schema, calculate the **Schema Eligibility & Impact Index**.

## 🧠 Knowledge Modules (Fractal Skills)

### 1. [Purpose](./sub-skills/purpose.md)
### 2. [Total Score: **0–100**](./sub-skills/total-score-0100.md)
### 3. [Scoring Categories & Weights](./sub-skills/scoring-categories-weights.md)
### 4. [Category Definitions](./sub-skills/category-definitions.md)
### 5. [Eligibility Bands (Required)](./sub-skills/eligibility-bands-required.md)
### 6. [1. Page Type](./sub-skills/1-page-type.md)
### 7. [2. Current State](./sub-skills/2-current-state.md)
### 8. [3. Objective](./sub-skills/3-objective.md)
### 9. [1. Accuracy Over Ambition](./sub-skills/1-accuracy-over-ambition.md)
### 10. [2. Google First, Schema.org Second](./sub-skills/2-google-first-schemaorg-second.md)
### 11. [3. Minimal, Purposeful Markup](./sub-skills/3-minimal-purposeful-markup.md)
### 12. [4. Continuous Validation](./sub-skills/4-continuous-validation.md)
### 13. [Organization](./sub-skills/organization.md)
### 14. [WebSite (+ SearchAction)](./sub-skills/website-searchaction.md)
### 15. [Article / BlogPosting](./sub-skills/article-blogposting.md)
### 16. [Product](./sub-skills/product.md)
### 17. [SoftwareApplication](./sub-skills/softwareapplication.md)
### 18. [FAQPage](./sub-skills/faqpage.md)
### 19. [HowTo](./sub-skills/howto.md)
### 20. [BreadcrumbList](./sub-skills/breadcrumblist.md)
### 21. [LocalBusiness](./sub-skills/localbusiness.md)
### 22. [Review / AggregateRating](./sub-skills/review-aggregaterating.md)
### 23. [Event](./sub-skills/event.md)
### 24. [Required Tools](./sub-skills/required-tools.md)
### 25. [Common Failure Patterns](./sub-skills/common-failure-patterns.md)
### 26. [Static Sites](./sub-skills/static-sites.md)
### 27. [Frameworks (React / Next.js)](./sub-skills/frameworks-react-nextjs.md)
### 28. [CMS / WordPress](./sub-skills/cms-wordpress.md)
### 29. [Schema Strategy Summary](./sub-skills/schema-strategy-summary.md)
### 30. [JSON-LD Implementation](./sub-skills/json-ld-implementation.md)
### 31. [Placement Instructions](./sub-skills/placement-instructions.md)
### 32. [Validation Checklist](./sub-skills/validation-checklist.md)