seo-hreflang SKILL.md skillA
seo-hreflang from haniubub/seo-toolkit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add haniubub/seo-toolkit/seo-hreflang@v2.2.5Pins v2.2.5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- haniubub/seo-toolkit
- Path
skills/seo-hreflang/SKILL.md- Versions recorded
- 1
- Latest version
- v2.2.5, committed Sep 11, 2026
- Size
- 12,617 bytes
- Repository stars
- 8
- License
- a license file GitHub does not identify
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".
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Hreflang & International SEO Validate existing hreflang implementations or generate correct hreflang tags for multi-language and multi-region sites. Supports HTML, HTTP header, and XML sitemap implementations. ## Validation Checks ### 1. Self-Referencing Tags - Every page must include an hreflang tag pointing to itself - The self-referencing URL must exactly match the page's canonical URL - Missing self-referencing tags cause Google to ignore the entire hreflang set ### 2. Return Tags - If page A links to page B with hreflang, page B must link back to page A - Every hreflang relationship must be bidirectional (A→B and B→A) - Missing return tags invalidate the hreflang signal for both pages - Check all language versions reference each other (full mesh) ### 3. x-default Tag - Recommended when a selector/fallback URL exists: designates the fallback page for unmatched languages/regions - Typically points to the language selector page or English version - Only one x-default per set of alternates - Must also have return tags from all other language versions ### 4. Language Code Validation - Must use ISO 639-1 two-letter codes (e.g., `en`, `fr`, `de`, `ja`) …
Read the whole file at its exact version.
How to install
mdr add haniubub/seo-toolkit/seo-hreflang@sha256:b249aaad42738161The line at the top of this page pins the label v2.2.5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ahcnqvlptcsuzx65)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 11, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12617 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
haniubub/seo-toolkit · 8 stars · license a license file GitHub does not identify · pushed 2026-09-11 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ahcnqvlptcsuzx65 GET https://markdownregistry.com/api/v1/resolve?ref=haniubub/seo-toolkit/seo-hreflang GET https://markdownregistry.com/api/v1/blob/b249aaad42738161927048c0fc24aa9e6750cdea56157416fcf46c83b0790174
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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