seo-hreflang
An agent skill by AgriciDaniel, from AgriciDaniel/claude-seo. Tags: international, localization, markup, seo, validation.
What it does
Hreflang and international SEO audit, validation, and generation. Detects common mistakes, validates language/region codes, and generates correct hreflang implementations. Use when user says "hreflang", "i18n SEO", "international SEO", "multi-language", "multi-region", or "language tags".
Install
With the skills CLI, which installs into Claude Code, Codex, Cursor and other agents:
npx skills add AgriciDaniel/claude-seo --skill seo-hreflangOr copy the skill folder into Claude Code's skills directory by hand (~/.claude/skills for every project, or .claude/skills inside one):
git clone --depth 1 https://github.com/AgriciDaniel/claude-seo
cp -r claude-seo/skills/seo-hreflang ~/.claude/skills/seo-hreflangSafety box score
Grade B, low risk: 14 of 100 risk points, rated 2026-10-20. The grade rates what the skill and its scripts can reach on the machine of whoever installs it, across eight categories from shell execution to secrets access. How the score works.
This skill is a read-only SEO audit/generation helper for hreflang and international localization. Its main exposure is that it may fetch public site URLs and emit deployable HTML/header/sitemap snippets, but it does not include executable code, secrets handling, or privileged system changes.
| Category | Level | Why |
|---|---|---|
| Code & shell execution | 0 (none) | The shipped files are Markdown only; there are no scripts, code runners, or `eval`/shell commands to execute. |
| Network access | 1 (low) | It accepts a user-supplied `[url]` and validates live hreflang implementations, so it may fetch public pages, headers, and sitemaps from the target site. |
| Filesystem reach | 1 (low) | It explicitly reads bundled docs like `references/cultural-profiles.md`, `references/content-parity.md`, and `references/locale-formats.md`, but does not write outside the repo. |
| Secrets & credentials | 0 (none) | No tokens, passwords, `.env` files, browser sessions, or login workflows are mentioned. |
| Privilege & persistence | 0 (none) | There is no sudo, service installation, shell startup editing, or OS-level configuration. |
| Instruction hijack surface | 0 (none) | The files do not instruct the agent to ignore its rules, hide behavior, or follow untrusted remote instructions. |
| Irreversible actions | 1 (low) | It can generate production-ready hreflang HTML, HTTP header, and XML sitemap snippets, but it does not publish or deploy them itself. |
| Transparency | 1 (low) | Some guidance depends on external references, including a Google PDF URL and a separate skill command template in `references/machine-translation-qa.md`, which are not fully inspectable in this repo. |
Before installing
- Confirm it only audits public URLs and does not require Search Console, API keys, or other credentials.
- Read `references/machine-translation-qa.md` and the external links it cites before relying on its policy guidance.
- Use a staging or test URL first and review the generated hreflang tags before copying them into production.
Rated 2026-10-20 by an automated review of 6 files from the skill's repository.
Source
- Repository
- AgriciDaniel/claude-seo (all skills from this repository)
- Path
- skills/seo-hreflang/SKILL.md
- Branch
- main
- Collection
- claude-seo
- Updated
- 2026-09-21
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