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-international)<a href="https://agentmods.dev/skills/hainrixz/claude-seo-ai/seo-international"><img src="https://agentmods.dev/badge/skills/hainrixz/claude-seo-ai/seo-international/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-international"><img src="https://agentmods.dev/badge/skills/hainrixz/claude-seo-ai/seo-international.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 | $0.00067 | $0.01786 |
| Opus 5 | $0.00034 | $0.00893 |
| Sonnet 5 | $0.00013 | $0.00357 |
| Haiku 4.5 | $0.00007 | $0.00179 |
Grade A, and why
seo-international 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 4d 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 — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.
seo-international (M20)
hreflang tells search engines which language/region URL to serve. This module is conditional: it only runs when seo-vertical-detect flags a multilingual site (multiple lang/locale URLs, language switcher, or existing hreflang). On monolingual sites every finding is not_applicable at severity 0. Schema-type concerns defer to references/schema-tier1.md; this module owns link-level localization only.
Inputs
Work from the PageSnapshot named in your dispatch envelope: read parsed from <run_dir>/pages/<slug>.json (hreflang[], canonicals[], <html lang> in parsed) plus headers.link and the sibling pages under <run_dir>/pages/ for reciprocity; Grep pages/<slug>.html for verbatim evidence; site artifacts live in <run_dir>/site/{robots.json,sitemaps.json,discovery.json}. 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). Read hreflang from <link rel="alternate" hreflang="..."> in <head> (also accept HTTP Link: headers / sitemap xhtml:link when present):
- Reciprocity — if page A declares an alternate B, B must declare A back. One-way hreflang is ignored by Google.
- BCP-47 validity — each
hreflangvalue is a valid language (en) or language-region (en-GB,pt-BR) tag; region is ISO-3166-1 alpha-2, not a country-of-language guess (en-UKis invalid; useen-GB). - Self-reference — the page lists itself in its own hreflang set.
- x-default — at least one
hreflang="x-default"for the language-selector / fallback URL. - hreflang↔canonical conflict — an hreflang URL must be self-canonical; pointing hreflang at a URL whose
rel=canonicalis a different page neutralizes the cluster (cross-check M2/seo-indexability). <html lang>agreement — the documentlangattribute matches the locale this URL targets in its own hreflang entry.
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.
- 4d ago Changed · +7 lines 3377a91dacc0
- 6d ago Changed · +3 lines 13586ea207d1
- 12d ago First seen · 41 lines · 67 tokens per session scan A c2b1661eb771
seo-international is a skill published in the GitHub repository Hainrixz/claude-seo-ai (59 stars, last pushed 5d ago), licensed MIT. It adds 67 tokens to every session and 1,786 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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web-optimization
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multilingual-score
Score translated or localized content into one composite quality verdict — technical translation scoring (length ratio, formatting, do-not-translate terms, placeholders), content quality in the target language, brand voice consistency, and target-market compliance — classified as Publish Ready (85+), Native Speaker…