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 Hainrixz/claude-seo-ai/plugin install claude-seo-aiWrote 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/skills/hainrixz/claude-seo-ai/seo-sitemaps)<a href="https://agentmods.dev/skills/hainrixz/claude-seo-ai/seo-sitemaps"><img src="https://agentmods.dev/badge/skills/hainrixz/claude-seo-ai/seo-sitemaps/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/skills/hainrixz/claude-seo-ai/seo-sitemaps"><img src="https://agentmods.dev/badge/skills/hainrixz/claude-seo-ai/seo-sitemaps.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 | $0.00068 | $0.01734 |
| Opus 5 | $0.00034 | $0.00867 |
| Sonnet 5 | $0.00014 | $0.00347 |
| Haiku 4.5 | $0.00007 | $0.00173 |
Grade A, and why
seo-sitemaps scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.
seo-sitemaps (M17)
Sitemaps are the discovery contract you hand the crawler — they should list exactly the canonical, indexable URLs and nothing else. Schema rules for related markup: references/schema-tier1.md.
Inputs
Work from the PageSnapshot named in your dispatch envelope: read parsed from <run_dir>/pages/<slug>.json plus <run_dir>/site/sitemaps.json (+ site/sitemap-urls.txt), <run_dir>/site/robots.json, and <run_dir>/crawl.json for orphan reconciliation and per-URL status; Grep pages/<slug>.html for verbatim evidence. Deterministic findings already emitted by audit.mjs are listed in <run_dir>/findings.deterministic.json — do not re-emit those ids; add model-judged findings only. If invoked directly with a URL/path and no snapshot exists, first run node "${CLAUDE_PLUGIN_ROOT}/scripts/snapshot.mjs" <target> --out "${CLAUDE_PLUGIN_DATA}/runs" and use the printed snapshot path.
Audits
Working from the PageSnapshot (parsed_rendered when render.used is not none, else parsed) plus site/sitemaps.json and site/robots.json:
- Presence & validity: locate XML sitemap(s) (
/sitemap.xml, robotsSitemap:lines, sitemap index); parse as well-formed XML against the sitemaps.org schema. - Size limits: each sitemap
<=50,000URLs and<=50MBuncompressed; if exceeded, expect a sitemap index splitting the set. - Extensions: where relevant, validate
image:,video:, andnews:namespace entries (correct namespace declared, required child elements present). - lastmod accuracy:
<lastmod>is valid ISO 8601 and reflects real last-modified time — not a build-time stamp on every URL (which trains crawlers to ignore it). - robots referencing: at least one absolute
Sitemap:line inrobots.txt. - Sitemap-to-canonical consistency: no URL in the sitemap is
noindex, redirected, 4xx/5xx, or non-canonical (self-referencing canonical only). Cross-check indexability with M-indexability. - Orphan reconciliation: diff sitemap URLs against the internal link graph — flag indexable pages absent from the sitemap and sitemap URLs unreachable by internal links.
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.
- 5d ago Changed · +8 lines c3482e05e1d2
- 6d ago Changed · +3 lines da28a13eae08
- 13d ago First seen · 41 lines · 68 tokens per session scan A 2de0f13030a9
seo-sitemaps is a skill published in the GitHub repository Hainrixz/claude-seo-ai (59 stars, last pushed 5d ago), licensed MIT. It adds 68 tokens to every session and 1,734 once invoked, about $0.0003 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 2026-08-30.
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