international-seo

international-seo is a skill for Claude Code, Codex from thisisAhsanIqbal/nextjs-seo-audit. It costs 39 tokens per session (882 once invoked), scanned A, original, MIT.

A checker for websites that serve different languages or regional versions of their pages. Hreflang tags tell search engines which language and region each page targets.

In plain words
What is it for?
Use it to validate hreflang tags, language and region codes, fallback pages, self-references, duplicate entries, and broken alternate-page URLs.
Why use it?
It helps prevent search engines from showing the wrong language or regional page to visitors.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to validate hreflang tags, language and region codes, fallback pages, self-references, duplicate entries, and broken alternate-page URLs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thisisahsaniqbal/nextjs-seo-audit/international-seo
Install

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.

Any agent
npx skills add thisisAhsanIqbal/nextjs-seo-audit --skill international-seo
Clone the repo
git clone --depth 1 https://github.com/thisisAhsanIqbal/nextjs-seo-audit

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for international-seo

README.md
[![agentmods](https://agentmods.dev/badge/skills/thisisahsaniqbal/nextjs-seo-audit/international-seo/github.svg)](https://agentmods.dev/skills/thisisahsaniqbal/nextjs-seo-audit/international-seo)
Your own site
<a href="https://agentmods.dev/skills/thisisahsaniqbal/nextjs-seo-audit/international-seo"><img src="https://agentmods.dev/badge/skills/thisisahsaniqbal/nextjs-seo-audit/international-seo/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.

agentmods 80×15 button for international-seo

Your own site · 80×15
<a href="https://agentmods.dev/skills/thisisahsaniqbal/nextjs-seo-audit/international-seo"><img src="https://agentmods.dev/badge/skills/thisisahsaniqbal/nextjs-seo-audit/international-seo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 882 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.00882
Opus 5 $0.00019 $0.00441
Sonnet 5 $0.00008 $0.00176
Haiku 4.5 $0.00004 $0.00088

Measured 12d ago against content hash 5bd66d403003, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

international-seo 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 12d 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.

skills/international-seo/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

International SEO

Audit the page for multi-language and regional targeting issues.

When to activate: Only relevant if the site serves multiple languages, regions, or has localised content. If a page is monolingual with no internationalisation signals, report ✅ PASS "No internationalisation issues (single-language site)".

1. Hreflang tags

Look for <link rel="alternate" hreflang="..."> in <head>:

Check Status
No hreflang tags on a multi-language site ❌ FAIL "Add hreflang tags to indicate language/region variants"
Hreflang tags present ✅ PASS — list all language-region codes found

Hreflang validation rules

Rule Violation =
Self-referencing hreflang missing (page must include itself) ❌ FAIL
x-default fallback missing ⚠️ WARN "Add hreflang=\"x-default\" for the default/fallback page"
Invalid language code (must be ISO 639-1, e.g. en, fr, de) ❌ FAIL
Invalid region code (must be ISO 3166-1 alpha-2, e.g. en-US, fr-CA) ⚠️ WARN
Hreflang URLs return 4xx or 5xx ❌ FAIL "Hreflang points to broken URL"
Duplicate hreflang entries for same language-region ⚠️ WARN

2. HTML lang attribute

Check Status
<html lang="..."> missing ❌ FAIL
lang value doesn't match hreflang self-reference ⚠️ WARN "Mismatch between html lang and hreflang"
Properly set ✅ PASS

3. Content-Language header (meta)

  • <meta http-equiv="Content-Language" content="..."> → check if present
  • If present, verify it matches the lang attribute → ⚠️ WARN if mismatch

4. URL structure for internationalisation

Detect URL pattern used:

Pattern Example Assessment
Subdirectory /en/, /fr/, /de/ ✅ Recommended
Subdomain en.example.com ✅ Acceptable
ccTLD example.fr, example.de ✅ Strong geo-targeting
URL parameter ?lang=en ⚠️ WARN "Not recommended — search engines may ignore parameters"

5. Translated content checks

Read the full file on GitHub · 82 lines

Changes

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.

  1. 12d ago First seen · 82 lines · 39 tokens per session scan A 5bd66d403003

Subscribe to this mod's changes

international-seo is a skill published in the GitHub repository thisisAhsanIqbal/nextjs-seo-audit (7 stars, last pushed 6mo ago), licensed MIT. It adds 39 tokens to every session and 882 once invoked, about $0.0002 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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