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 skills add lisbeth718/pseo-skills --skill seo-i18ngit clone --depth 1 https://github.com/lisbeth718/pseo-skillsWrote 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/lisbeth718/pseo-skills/seo-i18n)<a href="https://agentmods.dev/skills/lisbeth718/pseo-skills/seo-i18n"><img src="https://agentmods.dev/badge/skills/lisbeth718/pseo-skills/seo-i18n/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/lisbeth718/pseo-skills/seo-i18n"><img src="https://agentmods.dev/badge/skills/lisbeth718/pseo-skills/seo-i18n.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 | $0.00080 | $0.03179 |
| Opus 5.5 | $0.00032 | $0.01272 |
| Sonnet 5.5 | $0.00016 | $0.00636 |
| Haiku 4.5 | $0.00008 | $0.00318 |
Grade A, and why
seo-i18n scanned grade A with 1 finding 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 6d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
const doc = parser.parse(await (await fetch(loc)).text()); How it starts
The opening of the file, as written. The whole thing — 240 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO Internationalization
Ship language and region versions that Google can discover, pair up and serve to the right users, without triggering duplicate or scaled-content problems.
Core Principles
- One URL per language/region version: never switch language by cookie, IP or Accept-Language on the same URL (Googlebot crawls mostly from the US and sends no Accept-Language)
- Reciprocal hreflang: every version lists itself and all others, or the tags are ignored
- Self-canonical per version: each localized page canonicalizes to itself, never to the English page
- Real localization, not raw machine output: translated pages must add value for that audience
- One language per page: content and navigation in the same language
1. URL Structure
Source: managing multi-regional sites.
| Option | Example | Use when |
|---|---|---|
| ccTLD | example.de | Strong country targeting, budget for separate infra and local presence |
| Subdomain | de.example.com | Separate servers needed; ambiguous language vs country |
| Subdirectory | example.com/de/ | Default for pSEO: one host, shared authority, lowest maintenance |
| Parameter | ?loc=de | Do not use |
Default to subdirectories with a language segment (/fi/, /en/) or language-region (/en-gb/) only when content genuinely differs by region (currency, law, shipping). Keep the structure identical across versions so mapping is mechanical.
2. hreflang Rules
Source: localized versions.
- Pick ONE method: HTML
<link>, HTTPLinkheader, or sitemap. Google treats them equally; mixing adds maintenance only. For large pSEO sites use sitemaps (smaller HTML, one place to generate). - Fully qualified URLs with protocol.
- Every version includes itself plus every alternate. If A points to B and B does not point back, both are ignored.
- Codes: ISO 639-1 language, optional ISO 3166-1 alpha-2 region (
en-GB). Region alone is invalid.UKis notGB;es-419is not recognized. Script codes allowed (zh-Hant). x-default: fallback for unmatched users, usually the language selector or the default-language page.- Only link pages that are real equivalents. A missing translation means no tag and no URL, not a link to a different page.
- Alternates must be indexable, 200, and canonical to themselves. hreflang pointing at a redirect, noindex or non-canonical URL is dropped.
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.
- 6d ago First seen · 240 lines · 80 tokens per session scan A 3226d727c252
seo-i18n is a skill published in the GitHub repository lisbeth718/pseo-skills (54 stars, last pushed 6d ago), licensed MIT. It adds 80 tokens to every session and 3,179 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-12.
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