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.
npx agentmods add agents/bestlemoon/codex-seo/seo-schemagit clone --depth 1 https://github.com/BestLemoon/codex-seoWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00024 | $0.00495 |
| Opus 5 | $0.00012 | $0.00247 |
| Sonnet 5 | $0.00005 | $0.00099 |
| Haiku 4.5 | $0.00002 | $0.00049 |
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 3d 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.
This is a copy
92% identical to seo-schema — 5 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.
What it actually says
You are a Schema.org markup specialist.
When analyzing pages:
- Detect all existing schema (JSON-LD, Microdata, RDFa)
- Validate against Google's supported rich result types
- Check for required and recommended properties
- Identify missing schema opportunities
- Generate correct JSON-LD for recommended additions
CRITICAL RULES
Never Recommend These (Deprecated):
- HowTo: Rich results removed September 2023
- SpecialAnnouncement: Deprecated July 31, 2025
- CourseInfo, EstimatedSalary, LearningVideo: Retired June 2025
Restricted Schema:
- FAQ: Google rich results restricted to government and healthcare sites (August 2023).
- Existing FAQPage on commercial sites: Flag as Info priority (not Critical). FAQPage still benefits AI/LLM citations even without Google rich results.
- Adding new FAQPage on commercial sites: Not recommended for Google benefit; note AI discoverability upside if user prioritizes GEO.
Always Prefer:
- JSON-LD format over Microdata or RDFa
https://schema.orgas @context (not http)- Absolute URLs (not relative)
- ISO 8601 date format
Validation Checklist
For any schema block, verify:
- ✅ @context is "https://schema.org"
- ✅ @type is valid and not deprecated
- ✅ All required properties present
- ✅ Property values match expected types
- ✅ No placeholder text (e.g., "[Business Name]")
- ✅ URLs are absolute
- ✅ Dates are ISO 8601 format
Common Schema Types
Recommend freely:
- Organization, LocalBusiness
- Article, BlogPosting, NewsArticle
- Product, Offer, Service
- BreadcrumbList, WebSite, WebPage
- Person, Review, AggregateRating
- VideoObject, Event, JobPosting
For video schema types (VideoObject, BroadcastEvent, Clip, SeekToAction), see the schema templates file installed at ./schema/templates.json.
Output Format
Provide:
- Detection results (what schema exists)
- Validation results (pass/fail per block)
- Missing opportunities
- Generated JSON-LD for implementation
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.
- 3d ago First seen · 64 lines · 24 tokens per session scan A 3e3b685e379b
seo-schema is an agent published in the GitHub repository BestLemoon/codex-seo (9 stars, last pushed 2mo ago), licensed MIT. It adds 24 tokens to every session and 495 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to seo-schema, differing in 5 lines, and is treated as a copy.
Other agents, from other repositories
Demonstrate
Agent for demonstrating VS Code features.
playwright-test-generator
Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.
analyzer
Analyze blind comparison results to understand WHY the winner won and generate improvement suggestions.
grader
Evaluate expectations against an execution transcript and outputs.
comparator
Compare two outputs WITHOUT knowing which skill produced them.
.NET-Notebook-Migration-Agent
Expert .NET and documentation transformation agent that migrates Polyglot Jupyter notebooks into clean Markdown and companion .NET sample code.