Agent skill

Schema Markup

Schema.org markup implementation patterns for rich results. An agent skill from MadAppGang/claude-code.

Install Schema Markup

skills CLI

$ npx skills add MadAppGang/claude-code --skill schema-markup -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install MadAppGang/claude-code schema-markup --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/seo/skills/schema-markup .claude/skills/schema-markup && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "schema-markup" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/seo/skills/schema-markup into .claude/skills/schema-markup/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "schema-markup", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/MadAppGang/claude-code/tree/main/plugins/seo/skills/schema-markup

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add MadAppGang/claude-code --skill schema-markup -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install MadAppGang/claude-code schema-markup --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/seo/skills/schema-markup .agents/skills/schema-markup && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "schema-markup" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/seo/skills/schema-markup into .agents/skills/schema-markup/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "schema-markup", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add MadAppGang/claude-code --skill schema-markup -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install MadAppGang/claude-code schema-markup --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/seo/skills/schema-markup .cursor/skills/schema-markup && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "schema-markup" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/seo/skills/schema-markup into .cursor/skills/schema-markup/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "schema-markup", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/MadAppGang/claude-code.git --path plugins/seo/skills/schema-markup

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add MadAppGang/claude-code --skill schema-markup -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install MadAppGang/claude-code schema-markup --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/seo/skills/schema-markup .gemini/skills/schema-markup && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "schema-markup" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/seo/skills/schema-markup into .gemini/skills/schema-markup/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "schema-markup", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install MadAppGang/claude-code schema-markup

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add MadAppGang/claude-code --skill schema-markup -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/seo/skills/schema-markup .github/skills/schema-markup && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "schema-markup" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/seo/skills/schema-markup into .github/skills/schema-markup/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "schema-markup", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add MadAppGang/claude-code --skill schema-markup -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install MadAppGang/claude-code schema-markup --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/MadAppGang/claude-code.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/seo/skills/schema-markup .opencode/skills/schema-markup && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "schema-markup" agent skill from https://github.com/MadAppGang/claude-code/tree/main/plugins/seo/skills/schema-markup into .opencode/skills/schema-markup/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "schema-markup", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: schema-markup
GitHub stars: 285
Token cost: ~524 tokens
SKILL.md length: 102 words
Files: 1
Skills in repo: 69
Repo updated: Mar 15, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Schema.org markup implementation patterns for rich results. An agent skill from MadAppGang/claude-code.

Works in 5 steps: Be specific: Use most specific type… → Be accurate: Only mark up visible content → Be complete: Include all required… → …
Adding structured data to content for enhanced SERP appearances
SKILL.md covers When to Use, Common Schema Types, Implementation Checklist and Best Practices
Reaches schema.org

What it does

Schema Markup is an agent skill from MadAppGang/claude-code. Schema.org markup implementation patterns for rich results. Use when adding structured data to content for enhanced SERP appearances.

Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Marketing & SEO, covering Schema markup. The repository describes itself as: claude code plugins marketplace. The licence is MIT.

When your agent uses it

Adding structured data to content for enhanced SERP appearances
Tasks that involve Schema markup

Example prompts

“/schema-markup”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Be specific: Use most specific type (BlogPosting over Article)
Be accurate: Only mark up visible content
Be complete: Include all required properties
Test thoroughly: Use validation tools
Monitor: Check Search Console regularly

What it can do on your machine

Read from SKILL.md and the folder at commit 6097ad4. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- schema.org
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Schema Markup loads about 524 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 102 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~37
When it runs · the whole SKILL.md, loaded when a task matches: ~524

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from MadAppGang/claude-code at commit 6097ad4, republished under its MIT licence (© MadAppGang). 102 words, ~524 tokens.

Download SKILL.mdSave it as .claude/skills/schema-markup/SKILL.md (or your agent's skills folder).

name: schema-markup
description: Schema.org markup implementation patterns for rich results. Use when adding structured data to content for enhanced SERP appearances.
plugin: seo
updated: 2026-01-20

plugin: seo updated: 2026-01-20

Schema Markup

When to Use

Adding structured data to content
Implementing rich results
Validating existing schema
Planning schema strategy

Common Schema Types

Article/BlogPosting

json

{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Article Title (max 110 chars)",
  "image": ["https://example.com/image.jpg"],
  "author": {
    "@type": "Person",
    "name": "Author Name"
  },
  "publisher": {
    "@type": "Organization",
    "name": "Publisher Name",
    "logo": {
      "@type": "ImageObject",
      "url": "https://example.com/logo.jpg"
    }
  },
  "datePublished": "2025-01-01",
  "dateModified": "2025-01-15"
}

FAQPage

json

{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "Question text?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Answer text."
      }
    }
  ]
}

HowTo

json

{
  "@context": "https://schema.org",
  "@type": "HowTo",
  "name": "How to do something",
  "step": [
    {
      "@type": "HowToStep",
      "name": "Step 1 title",
      "text": "Step 1 description"
    },
    {
      "@type": "HowToStep",
      "name": "Step 2 title",
      "text": "Step 2 description"
    }
  ]
}

Implementation Checklist

Use JSON-LD format (preferred by Google)
Place in <head> or end of <body>
Include all required properties
Validate with Google Rich Results Test
Test with Schema.org validator
Check Search Console for errors

Best Practices

Be specific: Use most specific type (BlogPosting over Article)
Be accurate: Only mark up visible content
Be complete: Include all required properties
Test thoroughly: Use validation tools
Monitor: Check Search Console regularly

Files

Just SKILL.md in plugins/seo/skills/schema-markup of MadAppGang/claude-code.

Open the folder on GitHubat commit 6097ad4

Compare with similar skills

Schema Markup next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Schema Markup compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Schema Markup this skillMadAppGang/claude-code	285	—	~524	Automated safety check: Pass	MIT	6 mo ago
SEO GeoReScienceLab/opc-skills	1.8k	4 repos	~2.1k	Automated safety check: Pass	Apache-2.0	yesterday
GEO-First SEO Audit Toolzubair-trabzada/geo-seo-claude	11k	—	~2.8k	Automated safety check: Notes	MIT	today
SEO Optimizerailabs-393/ai-labs-claude-skills	455	1 repos	~3.2k	Automated safety check: Pass	MIT	11 mo ago
Portaljs Add Dcatdatopian/portaljs	2.4k	1 repos	~1.8k	Automated safety check: Pass	MIT	2 days ago
Schema Markupfreekmurze/dotfiles	1k	15 repos	~1.2k	Automated safety check: Pass	None	2 days ago

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Questions about Schema Markup

What does Schema Markup do?

Schema.org markup implementation patterns for rich results. An agent skill from MadAppGang/claude-code. Schema Markup is an agent skill from MadAppGang/claude-code.org markup implementation patterns for rich results.

When should I use Schema Markup?

Schema Markup fits situations like: adding structured data to content for enhanced SERP appearances; tasks that involve Schema markup.

How do I install Schema Markup in Claude Code?

Run `npx skills add MadAppGang/claude-code --skill schema-markup -a claude-code`. Or copy the skill folder (plugins/seo/skills/schema-markup in MadAppGang/claude-code) into .claude/skills/schema-markup in your project. Claude Code loads it when a task matches its description.

How do I install Schema Markup in Codex?

Run `npx skills add MadAppGang/claude-code --skill schema-markup -a codex`. Or copy the skill folder (plugins/seo/skills/schema-markup in MadAppGang/claude-code) into .agents/skills/schema-markup in your project. Codex loads it when a task matches its description.

Can I use Schema Markup in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add MadAppGang/claude-code --skill schema-markup -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/schema-markup, .gemini/skills/schema-markup, .github/skills/schema-markup and .opencode/skills/schema-markup in your project.

What does Schema Markup need to run?

SKILL.md names no scripts, command-line tools or credentials: Schema Markup is instructions for the agent only.

Does Schema Markup access the network?

SKILL.md names 1 domain. In commands or code: schema.org; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Schema Markup safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Schema Markup use?

Schema Markup is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Schema Markup use?

About 524 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Schema Markup?

Skills that share tags, products or a category with Schema Markup: SEO Geo (ReScienceLab/opc-skills, 1.8k stars), GEO-First SEO Audit Tool (zubair-trabzada/geo-seo-claude, 11k stars), SEO Optimizer (ailabs-393/ai-labs-claude-skills, 455 stars) and Portaljs Add Dcat (datopian/portaljs, 2.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Schema Markup?

MadAppGang (a GitHub organization) maintains it in MadAppGang/claude-code, which has 285 GitHub stars. The repository holds 69 skills in this directory. The repository was last updated on March 15, 2026.

Source: MadAppGang/claude-code on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Schema Markup

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Schema Markup

When to Use

Common Schema Types

Article/BlogPosting

FAQPage

HowTo

Implementation Checklist

Best Practices

Files

Compare with similar skills

Similar skills

More from MadAppGang/claude-code

Related

Questions about Schema Markup