schema-markup

schema-markup is a skill for Claude Code, Codex from Sudhakaran88/solopreneur-skills. It costs 92 tokens per session (3,257 once invoked), scanned A, original, MIT.

A guide for adding structured data—machine-readable information about a webpage, usually written as JSON-LD, that search engines can use for enhanced search listings.

In plain words
What is it for?
Adding, checking, or fixing FAQ, product, review, breadcrumb, and other schema markup through code, a CMS, or Google Tag Manager.
Why use it?
It helps identify suitable schema types and correct errors so search engines can better understand pages and may show extra details in results.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Adding, checking, or fixing FAQ, product, review, breadcrumb, and other schema markup through code, a CMS, or Google Tag Manager.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sudhakaran88/solopreneur-skills/schema-markup
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Sudhakaran88/solopreneur-skills --skill schema-markup
Clone the repo
git clone --depth 1 https://github.com/Sudhakaran88/solopreneur-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for schema-markup

README.md
[![agentmods](https://agentmods.dev/badge/skills/sudhakaran88/solopreneur-skills/schema-markup/github.svg)](https://agentmods.dev/skills/sudhakaran88/solopreneur-skills/schema-markup)
Your own site
<a href="https://agentmods.dev/skills/sudhakaran88/solopreneur-skills/schema-markup"><img src="https://agentmods.dev/badge/skills/sudhakaran88/solopreneur-skills/schema-markup/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for schema-markup

Your own site · 80×15
<a href="https://agentmods.dev/skills/sudhakaran88/solopreneur-skills/schema-markup"><img src="https://agentmods.dev/badge/skills/sudhakaran88/solopreneur-skills/schema-markup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 92 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,257 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00092 $0.03257
Opus 5 $0.00046 $0.01629
Sonnet 5 $0.00018 $0.00651
Haiku 4.5 $0.00009 $0.00326

Measured 11d ago against content hash e920e3d3a081, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

schema-markup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/schema-markup/SKILL.md · 290 lines

How it starts

The opening of the file, as written. The whole thing — 290 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a structured data expert helping solopreneurs implement schema markup that earns rich results, improves click-through rates, and signals entity clarity to both Google and AI search engines.


When to Use This Skill

Trigger this skill when the user wants to:

  • Add schema markup to a page for the first time
  • Fix schema validation errors flagged in Google Search Console
  • Understand which schema types to prioritize for their site
  • Improve click-through rates through rich results
  • Make their content more legible to AI search engines (Perplexity, ChatGPT, Google AI Overviews)
  • Audit existing structured data for gaps or mistakes
  • Implement schema via code, CMS plugin, or Google Tag Manager

Context Check

Before diving into implementation, ask or confirm:

  1. What CMS or platform are they on? (WordPress, Webflow, Framer, custom code, Shopify, etc.)
  2. What type of site is it? (SaaS, blog, local service, e-commerce, personal brand, course site)
  3. Do they already have schema markup? If yes, have they checked GSC for errors?
  4. What pages are the priority? (Homepage, product pages, blog posts, landing pages)
  5. Have they validated their markup? (Rich Results Test, Schema Markup Validator)

Do not recommend a schema type before knowing what the page is actually about. Schema must reflect visible page content — not aspirational content.


What Schema Markup Does (and Does Not Do)

What it DOES:

  • Enables rich results in Google SERP (star ratings, price, breadcrumbs, sitelinks, etc.)
  • Improves click-through rate — rich results see 20–40% higher CTR vs. plain listings
  • Sends entity clarity signals to Google's Knowledge Graph
  • Makes content more parseable by AI search engines (Perplexity, Bing Copilot, ChatGPT)
  • Helps AI Overviews and AI Mode cite your content more reliably
  • Supports GEO (Generative Engine Optimization) — 81% of AI-cited pages have schema markup

What it DOES NOT:

  • Does not directly improve rankings. Google has confirmed this repeatedly. Schema is a visibility tool, not a ranking signal.
  • Does not substitute for good content or technical SEO
  • Does not guarantee rich results — Google decides whether to display them
  • Does not help if the schema doesn't match the visible page content

Read the full file on GitHub · 290 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 290 lines · 92 tokens per session scan A e920e3d3a081

Subscribe to this mod's changes

schema-markup is a skill published in the GitHub repository Sudhakaran88/solopreneur-skills (5 stars, last pushed 2mo ago), licensed MIT. It adds 92 tokens to every session and 3,257 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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