seo-schema

seo-schema is a skill for Claude Code from joaoguirunas/team-os. It costs 44 tokens per session (1,579 once invoked), scanned A, a copy of seo-schema, MIT.

A tool for finding, checking, and creating Schema.org structured data, especially JSON-LD. Structured data is extra information in a page’s code that helps search engines understand its content.

In plain words
What is it for?
Use it to audit or generate markup for structured data, rich results, and JSON-LD implementations.
Why use it?
It helps identify invalid or missing markup that may prevent pages from being understood correctly or qualifying for enhanced search results.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Good fit Use it to audit or generate markup for structured data, rich results, and JSON-LD implementations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/joaoguirunas/team-os/seo-schema
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 joaoguirunas/team-os --skill seo-schema
Clone the repo
git clone --depth 1 https://github.com/joaoguirunas/team-os

Made for: Claude Code.

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/joaoguirunas/team-os/seo-schema/github.svg)](https://agentmods.dev/skills/joaoguirunas/team-os/seo-schema)
Your own site
<a href="https://agentmods.dev/skills/joaoguirunas/team-os/seo-schema"><img src="https://agentmods.dev/badge/skills/joaoguirunas/team-os/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/joaoguirunas/team-os/seo-schema"><img src="https://agentmods.dev/badge/skills/joaoguirunas/team-os/seo-schema.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,579 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 97% copy Near-identical to another mod 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 $0.00044 $0.01579
Opus 5.5 $0.00018 $0.00632
Sonnet 5.5 $0.00009 $0.00316
Haiku 4.5 $0.00004 $0.00158

Measured 20d ago against content hash 0256e9ce6076, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 20d 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.

Origin

This is a copy

97% identical to seo-schema — 25 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/seo-schema/SKILL.md · 175 lines

How it starts

The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Schema Markup Analysis & Generation

Detection

  1. Scan page source for JSON-LD <script type="application/ld+json">
  2. Check for Microdata (itemscope, itemprop)
  3. Check for RDFa (typeof, property)
  4. Always recommend JSON-LD as primary format (Google's stated preference)

Validation

  • Check required properties per schema type
  • Validate against Google's supported rich result types
  • Test for common errors:
    • Missing @context
    • Invalid @type
    • Wrong data types
    • Placeholder text
    • Relative URLs (should be absolute)
    • Invalid date formats
  • Flag deprecated types (see below)

Schema Type Status (as of June 2026)

Read ../seo/references/schema-types.md for the full list. Key rules:

ACTIVE (recommend freely):

Organization, LocalBusiness, SoftwareApplication, WebApplication, Product (with Certification markup as of April 2025), ProductGroup, Offer, Service, Article, BlogPosting, NewsArticle, Review, AggregateRating, BreadcrumbList, WebSite, WebPage, Person, ProfilePage, ContactPage, VideoObject, ImageObject, Event, JobPosting, Course, DiscussionForumPosting

VIDEO & SPECIALIZED (recommend freely):

BroadcastEvent, Clip, SeekToAction, SoftwareSourceCode

See schema/templates.json for ready-to-use JSON-LD templates for these types.

JSON-LD and JavaScript rendering: Per Google's December 2025 JS SEO guidance, structured data injected via JavaScript may face delayed processing. For time-sensitive markup (especially Product, Offer), include JSON-LD in the initial server-rendered HTML.

NO RICH RESULTS, KEEP IF USEFUL:

  • FAQPage: Google retired FAQ rich results for ALL sites on May 7, 2026 (supersedes the Aug 2023 gov/health restriction). No Google SERP rich-result benefit; flag existing FAQPage at Info (not Critical) rather than removal. For genuine user Q&A pages, use QAPage.

DEPRECATED (never recommend):

  • HowTo: Rich results removed September 2023
  • SpecialAnnouncement: Deprecated July 31, 2025
  • CourseInfo, EstimatedSalary, LearningVideo: Retired June 2025
  • ClaimReview: Retired from rich results June 2025
  • VehicleListing: Retired from rich results June 2025
  • Practice Problem: Deprecation notice 2025-11-05; Search Console / Rich Results Test support removed 2026-01-06
  • Book Actions: Deprecated/removed from Google rich results; do not recommend it for SERP features.
  • Search Console / Rich Results Test / appearance-filter support for CourseInfo, EstimatedSalary, LearningVideo, SpecialAnnouncement, VehicleListing was removed 2025-09-09; Practice Problem support was removed 2026-01-06.

Read the full file on GitHub · 175 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. 20d ago Changed · -1 lines 0256e9ce6076
  2. 25d ago First seen · 176 lines · 44 tokens per session scan A 67b0fa5004e7

Subscribe to this mod's changes

seo-schema is a skill published in the GitHub repository joaoguirunas/team-os (4 stars, last pushed 2d ago), licensed MIT. It adds 44 tokens to every session and 1,579 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 97% identical to seo-schema, differing in 25 lines, and is treated as a copy.

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