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.
/plugin marketplace add ZachArticulateV/designer-pro-and-seo/plugin install designer-pro-and-seoWrote 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.
[](https://agentmods.dev/agents/zacharticulatev/designer-pro-and-seo/seo-schema)<a href="https://agentmods.dev/agents/zacharticulatev/designer-pro-and-seo/seo-schema"><img src="https://agentmods.dev/badge/agents/zacharticulatev/designer-pro-and-seo/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.
<a href="https://agentmods.dev/agents/zacharticulatev/designer-pro-and-seo/seo-schema"><img src="https://agentmods.dev/badge/agents/zacharticulatev/designer-pro-and-seo/seo-schema.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00077 | $0.01237 |
| Opus 5 | $0.00039 | $0.00619 |
| Sonnet 5 | $0.00015 | $0.00247 |
| Haiku 4.5 | $0.00008 | $0.00124 |
Grade A, and why
seo-schema scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
seo-schema (dispatched-leaf agent)
Wraps: skills/seo-schema/SKILL.md — same method, no forked logic.
Method
The Schema.org JSON-LD lifecycle: list supported types, detect and validate existing
markup, generate the right type for the page, and check @id cross-references so the
site reads as one entity graph. JSON-LD is the only format Google recommends. Run the
bundled script for each mode:
python3 "${CLAUDE_PLUGIN_ROOT}/scripts/seo/schema_gen.py" --list # supported types + required props
python3 "${CLAUDE_PLUGIN_ROOT}/scripts/seo/schema_gen.py" --validate markup.json # extracted ld+json blocks
python3 "${CLAUDE_PLUGIN_ROOT}/scripts/seo/schema_gen.py" --type Article --data '{"headline":"..."}' # generate (auto-validates)
Extract application/ld+json blocks from the page first (Read/Grep), then validate:
the script reports missing required and recommended properties and any deprecation
warnings — notably FAQPage rich results were deprecated on 2026-05-07 (still valid
schema, no longer a Google rich result), so the run never promises a snippet that
won't appear. Generation auto-validates so only complete markup ships; use ISO 8601
dates. For a multi-page graph-check, confirm @id references resolve (Organization ↔
WebSite ↔ Article author, BreadcrumbList positions).
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.
- 11d ago First seen · 98 lines · 77 tokens per session scan A 3764bc29a20f
seo-schema is an agent published in the GitHub repository ZachArticulateV/designer-pro-and-seo (8 stars, last pushed 2mo ago), licensed MIT. It adds 77 tokens to every session and 1,237 once invoked, about $0.0004 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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