Is the Schema Markup skill free?

Yes. The skill itself is free from coreyhaines31/marketingskills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Schema Markup SkillProof Score?

9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.

How do I install Schema Markup?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Schema Markup with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Schema Markup

JSON-LD generator/validator for schema.org rich-results markup.

by coreyhaines31 · coreyhaines31/marketingskills

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.6/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · e601213

Asked for schema on a SaaS pricing page: the skill combined Organization + SoftwareApplication + FAQPage under one @graph block using the correct required properties (name+offers for SoftwareApplication) straight from its own reference table. An unguided pass produced a single incomplete SoftwareApplication block that was missing offers entirely.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 9/10
Docs & honesty 5/5

What Schema Markup does

Walks through page type, existing schema, and target rich results, then outputs complete JSON-LD (Organization, Product, SoftwareApplication, FAQPage, HowTo, BreadcrumbList, LocalBusiness, Event, etc.), combinable on one page via @graph. Backed by a 398-line reference file of full worked examples and a required/recommended-properties table, plus a validation checklist against Google's Rich Results Test.

How to install Schema Markup

git clone https://github.com/coreyhaines31/marketingskills.git
cd marketingskills
mkdir -p ~/.claude/skills
cp -r skills/schema ~/.claude/skills/schema-markup

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Schema Markup

/schema-markup JSON-LD generator/validator for schema.org rich-results markup.

It also activates on plain-language prompts like these:

Add FAQ schema markup to this support page
Generate product schema JSON-LD for this listing page
Validate my breadcrumb schema against Google's rich results

Appears in

The Website Stack

Frequently asked questions

Is the Schema Markup skill free?: Yes. The skill itself is free from coreyhaines31/marketingskills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Schema Markup work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. Asked for schema on a SaaS pricing page: the skill combined Organization + SoftwareApplication + FAQPage under one @graph block using the correct required properties (name+offers for SoftwareApplication) straight from its own reference table. An unguided pass produced a single incomplete SoftwareApplication block that was missing offers entirely.
What is the Schema Markup SkillProof Score?: 9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.
How do I install Schema Markup?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Schema Markup with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.