When should this skill be used?

Use it when auditing metadata, crawlability, structured data, or indexability related to Add structured data markup.

Why check rendered HTML instead of source files?

The rendered HTML and HTTP response show what a page actually serves, which can differ from the source files. Verifying those gives a more accurate audit.

Does it work on any page?

It audits web pages by examining their rendered HTML and server responses; the item does not list restrictions on which pages can be checked.

Add structured data markup

SkillWeb & browsing

structured-data is a skill for auditing a web page's structured data markup, metadata, crawlability, and indexability. It checks the rendered HTML and the HTTP response rather than relying only on source files, so an agent can verify how a page actually behaves when served. Use it when a task involves Add structured data markup or related SEO checks.

Available today. Use it from your connected AI after setup.

No other account needed.

Have an AI agent setup that can load skills.

Then ask your AI: use the Add structured data markup skill

What your AI can do with it

Audit structured data markup on web pages
Check metadata and indexability
Assess crawlability of a page
Verify the rendered HTML instead of only source files
Inspect the HTTP response a server returns

Getting started

Have an AI agent setup that can load skills.
Add the structured-data skill to the agent's available skills.
Give the agent a page URL or source to audit and ask for a structured data, metadata, crawlability, or indexability check.
Review the agent's findings, which are based on rendered HTML and the HTTP response.

What this skill tells your AI

The instructions your AI receives, as published by thedaviddias/front-end-checklist in skills/structured-data/SKILL.md and read by ahel’s review.

Structured data enables rich snippets with stars, prices, images, and FAQ dropdowns in search results—significantly increasing click-through rates.

Quick Reference

Structured data enables rich snippets in search results
Use JSON-LD format (Google recommended)
Common types: Article, Product, FAQ, HowTo, LocalBusiness
Validate with Google Rich Results Test

Check

Analyze if this webpage implements structured data using Schema.org vocabulary. Check for JSON-LD, Microdata, or RDFa markup.

Fix

Add appropriate Schema.org structured data to this webpage based on its content type (Article, Product, LocalBusiness, etc.).

Explain

Explain how structured data helps search engines understand page content and enables rich snippets in search results.

Code Review

Review metadata generation, rendered HTML, structured data, and response headers related to Add structured data markup. Flag exact routes or templates where search-facing output violates the rule, and describe how to verify the final page output.

For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/en/rules/seo/structured-data

Signals

GitHub stars: 74k
Forks: 7k
Last commit: Aug 2026

Questions

When should this skill be used?: Use it when auditing metadata, crawlability, structured data, or indexability related to Add structured data markup.
Why check rendered HTML instead of source files?: The rendered HTML and HTTP response show what a page actually serves, which can differ from the source files. Verifying those gives a more accurate audit.
Does it work on any page?: It audits web pages by examining their rendered HTML and server responses; the item does not list restrictions on which pages can be checked.

Advanced

Item type: skill
Key: structured-data-thedaviddias
Source: github.com/thedaviddias/front-end-checklist

github.com/thedaviddias/front-end-checklist

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