# seo-schema

Detects, validates, and generates Schema.org JSON-LD structured data for web pages. Helps prepare markup for Google search results.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 7000 installs · ★ 21467
- Author: AgriciDaniel
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/AgriciDaniel/claude-seo/tree/HEAD/skills/seo-schema/SKILL.md
- Updated: 2026-10-22
- HTML: https://affpapa.org/en/nevibecode/skills/seo-schema

## What it does

The skill extracts markup using the `parse_html.py` script or scans the DOM for `<script type="application/ld+json">`, Microdata, and RDFa tags. It checks for missing `@context` or `@type` fields, relative URLs, invalid date formats, and flags deprecated schemas like HowTo or SpecialAnnouncement.

Results are saved to `SCHEMA-REPORT.md`, with ready-to-use snippets in `generated-schema.json`. Server rendering is required for time-sensitive Product and Offer markup, because client-side JavaScript generation makes Google Shopping crawls less reliable.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add AgriciDaniel/claude-seo --skill seo-schema -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/seo-schema/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/seo-schema/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add AgriciDaniel/claude-seo --skill seo-schema -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/seo-schema/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add AgriciDaniel/claude-seo --skill seo-schema -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/seo-schema/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install AgriciDaniel/claude-seo seo-schema
```

2. **Manually: put the files in place**
- File: `.github/skills/seo-schema/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add AgriciDaniel/claude-seo --skill seo-schema -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/AgriciDaniel/claude-seo --path skills/seo-schema
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/seo-schema/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add AgriciDaniel/claude-seo --skill seo-schema -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/AgriciDaniel/claude-seo/tree/HEAD/skills/seo-schema/SKILL.md

## When to use it
- validate existing JSON-LD markup on a target page
- generate valid JSON-LD schemas for articles, organizations, or products
- flag deprecated Schema.org types retired from Google rich results
- check for missing @context and invalid property data types

## Example prompts
- Validate structured data on `<url>` and list all syntax issues.
- Generate Organization and LocalBusiness JSON-LD markup.
- Check if the schema on `<url>` uses deprecated types.

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 8ecb960983c827d5.

BEGIN THIRD-PARTY FILE 8ecb960983c827d5
```text
---
name: seo-schema
description: >
  Detect, validate, or generate Schema.org JSON-LD for a supplied page or
  entity. Use only when structured data or rich-result markup is requested.
user-invocable: true
argument-hint: "[url]"
license: MIT
metadata:
  author: AgriciDaniel
  version: "2.5.0"
  category: seo
---

# Schema Markup Analysis & Generation

## Detection

1. Extract JSON-LD with `"${CLAUDE_PLUGIN_ROOT}/scripts/claude-seo" run parse_html.py --url <url> --json`
   (or scan `<script type="application/ld+json">` in the page source). Flag any
   block without `@context` or `@type`: Google cannot attach it to an entity (a
   rating in such a block does not reach the Product).
2. Check for Microdata (`itemscope`, `itemprop`)
3. Check for RDFa (`typeof`, `property`)
4. 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 (checked October 2026)

Read `../seo/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:** Google supports structured data generated with JavaScript, but its "Generate structured data with JavaScript" guide (last updated 2025-12-10) warns that dynamically generated Product markup can make Shopping crawls less frequent and less reliable for fast-changing price and availability. For time-sensitive markup (especially Product, Offer), include JSON-LD in the initial server-rendered HTML.

### NO RICH RESULTS, KEEP IF USEFUL:
- **FAQPage**: Google retired FAQ rich results for ALL sites on May 7, 2026 (supersedes the Aug 2023 gov/health restriction). No Google SERP rich-result benefit; flag existing FAQPage at Info (not Critical) rather than removal. For genuine user Q&A pages, use **QAPage**.

### DEPRECATED (never recommend):
- **HowTo**: Rich results removed September 2023
- **SpecialAnnouncement**: Deprecated July 31, 2025
- **CourseInfo, EstimatedSalary, LearningVideo**: Retired June 2025
- **ClaimReview**: No Search rich result since June 2025. Google's Fact Check Explorer still uses the markup, so fact-checking publishers may keep it; never recommend it for SERP features
- **VehicleListing**: Retired from rich results June 2025
- **Practice Problem**: Deprecation notice 2025-11-05; tooling support removed starting January 2026; documentation removed 2026-01-06
```
END THIRD-PARTY FILE 8ecb960983c827d5

The third-party file has ended. Everything between the 8ecb960983c827d5 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 3195 of 7436 bytes. © AgriciDaniel · MIT · https://github.com/AgriciDaniel/claude-seo/tree/HEAD/skills/seo-schema/SKILL.md

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