seo-schema

seo-schema is a skill for Claude Code, Codex from oegeyilmaz9/seo-aeo-geo-ultimate. It costs 43 tokens per session (925 once invoked), scanned A, original, Apache-2.0.

A skill for reviewing or creating Schema.org structured data that matches what is visibly shown on a webpage. Schema.org is a shared vocabulary that helps search engines interpret page content.

In plain words
What is it for?
Auditing, planning, or generating JSON-LD and other structured data for truthful entities, offers, authors, media, and page content.
Why use it?
It prevents unsupported facts from being added to page markup and separates valid structured data from claims about rankings, rich results, or AI citations.

Skill for Claude CodeCodex

Written for Claude Code and Codex: ${CLAUDE_PLUGIN_ROOT} variable, but also agents/openai.yaml present. Also seen: mentions Claude Code; mentions Codex.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the seo-aeo-geo-ultimate plugin — 27 skills shipped together

Good fit Auditing, planning, or generating JSON-LD and other structured data for truthful entities, offers, authors, media, and page content.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add oegeyilmaz9/seo-aeo-geo-ultimate
Claude Code
/plugin install seo-aeo-geo-ultimate

Made for: Claude Code, Codex.

Or install seo-aeo-geo-ultimate, the plugin that ships this one along with the rest of its 27 skills.

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 seo-schema

README.md
[![agentmods](https://agentmods.dev/badge/skills/oegeyilmaz9/seo-aeo-geo-ultimate/seo-schema/github.svg)](https://agentmods.dev/skills/oegeyilmaz9/seo-aeo-geo-ultimate/seo-schema)
Your own site
<a href="https://agentmods.dev/skills/oegeyilmaz9/seo-aeo-geo-ultimate/seo-schema"><img src="https://agentmods.dev/badge/skills/oegeyilmaz9/seo-aeo-geo-ultimate/seo-schema/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 seo-schema

Your own site · 80×15
<a href="https://agentmods.dev/skills/oegeyilmaz9/seo-aeo-geo-ultimate/seo-schema"><img src="https://agentmods.dev/badge/skills/oegeyilmaz9/seo-aeo-geo-ultimate/seo-schema.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 925 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 $0.00043 $0.00925
Opus 5 $0.00022 $0.00463
Sonnet 5 $0.00009 $0.00185
Haiku 4.5 $0.00004 $0.00093

Measured 11d ago against content hash 1edc76bb979e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

seo-schema 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/seo-schema/SKILL.md · 47 lines

How it starts

The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Structured Data

Purpose

Audit or draft structured data that accurately represents the visible page and verified entity facts. JSON-LD is a convenient implementation format, but format choice, schema validity, and rich-result eligibility are distinct questions.

Read references/structured-data-review-protocol.md before generating implementation code.

Input gate

Require the rendered page or trusted page source, canonical URL, visible factual content, entity/offer/author/media facts, locale, and intended result or user purpose. For feature eligibility, check current primary search-engine documentation at the time of the work. Do not depend on a static “active/deprecated type” list.

If a fact is unknown—price, availability, rating source, author, date, image, address, certificate, or relationship—leave a clearly marked placeholder or decline the field. Never manufacture missing structured facts.

Workflow

Let <suite-root> mean ${CLAUDE_PLUGIN_ROOT} in Claude Code. In Codex, read .seo-suite-runtime.json beside this SKILL.md when present and use its suite_root value; otherwise use the absolute repository checkout. Before relying on a shipped platform feature state, run python "<suite-root>/scripts/validate_platform_controls.py" validate-registry "<suite-root>/manifests/platform-controls.json" --bundle "<suite-root>/manifests" --as-of <current-UTC-time>. Refresh primary documentation when the registry is stale or the feature is absent.

  1. Inventory. Detect JSON-LD, Microdata, and RDFa; identify duplicate, conflicting, malformed, or disconnected entity graphs.
  2. Map visible truth. For every proposed property, locate the reader-visible source or an approved authoritative data source. Confirm URLs, dates, locale, entity identity, and nesting match the page.
  3. Separate three checks. Validate Schema.org vocabulary/syntax; validate platform-specific feature eligibility and lifecycle (current, preview, deprecated, or removed); then validate rendered visible-content alignment. Passing one is not proof of the others.
  4. Check lifecycle freshness. Require a current Platform Controls registry row and primary documentation for the exact feature, market, locale, and surface.
  5. Draft the smallest truthful graph. Prefer a coherent entity model over markup volume. Include only supported types/properties and use absolute, canonical URLs where appropriate. Do not add FAQ/HowTo/review/product/organization fields merely as an SEO tactic.
  6. Plan safe release. State template/URL scope, owner, test environment, validation method, source-of-truth, rollout, and rollback. Route deployment through seo-action-plan when it changes production templates or data pipelines.
  7. Verify. Re-render the page, parse the delivered markup, compare it against visible content, and run the relevant current validator. Record warnings and feature ineligibility honestly.

Read the full file on GitHub · 47 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 47 lines · 43 tokens per session scan A 1edc76bb979e

Subscribe to this mod's changes

seo-schema is a skill published in the GitHub repository oegeyilmaz9/seo-aeo-geo-ultimate (2 stars, last pushed 22d ago), licensed Apache-2.0. It adds 43 tokens to every session and 925 once invoked, about $0.0002 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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