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seo-hreflang

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".

Quality

88%

Does it follow best practices?

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SKILL.md
Quality
Evals
Security

Quality

Content

85%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A highly actionable, well-structured skill with exemplary progressive disclosure and explicit validation/feedback loops. The main weakness is conciseness: a niche dated section belongs in a reference file and some content is restated across multiple sections.

Suggestions

Move section 5c (region-specific Search units for EEA, South Africa, Türkiye) into a reference file like references/regional-search-features.md, keeping only a one-line pointer in the main body.

Deduplicate the Common Mistakes table against the numbered validation checks by consolidating shared items (e.g., self-referencing tags, return tags) into one location and cross-referencing from the other.

Place time-sensitive details (documentation dates such as 2026-09-08, GSC feature removal in 2022) into the relevant reference files or a clearly marked 'recent changes' section so the main body does not go stale.

DimensionReasoningScore

Conciseness

The bulk is lean, checklist-and-table driven, but section 5c inlines ~20 lines of niche regional Search-unit detail with embedded time-sensitive dates ('2026-09-08', 'since 2026-09-18', 'removed in 2022') that belong in a reference file, and content is duplicated across the validation checks, Common Mistakes table, and method comparison.

3 / 5

Actionability

Provides copy-paste-ready HTML link, HTTP header, and XML sitemap examples, concrete valid/invalid code pairs ('en-uk' vs 'en-GB', 'eng' vs 'en'), a severity-rated fix table, and explicit report templates covering the common cases.

5 / 5

Workflow Clarity

The 7-step generation process embeds verification steps (validate codes, verify return tags), an 8-check validation checklist covers the audit path, and the error-handling table gives explicit recovery actions, yielding clear sequences with checkpoints and feedback loops.

5 / 5

Progressive Disclosure

Four real reference files are each clearly signaled in the body with 'Load references/X for Y', are one level deep, and a dedicated Reference Files section instructs loading on demand ('do NOT load all at startup'), keeping the main body a well-navigable overview.

5 / 5

Total

18

/

20

Passed

Description

87%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong description that clearly states concrete capabilities and provides an explicit trigger clause with natural keywords. The only weakness is slight incompleteness in capability coverage and a few missing trigger synonyms.

DimensionReasoningScore

Specificity

Names the domain and three concrete third-person actions ('Detects common mistakes, validates language/region codes, and generates correct hreflang implementations'), but omits other body capabilities such as cultural adaptation and content parity auditing, leaving minor coverage gaps.

4 / 5

Completeness

Explicitly answers both 'what' (audit, validation, and generation with three concrete capabilities) and 'when' ('Use when user says "hreflang", "i18n SEO"...') with concrete trigger phrases, matching the top anchor's example pattern.

5 / 5

Trigger Term Quality

Good natural coverage anchored on the definitive term 'hreflang' plus 'i18n SEO', 'international SEO', 'multi-language', 'multi-region', and 'language tags', though common variations like 'localization', 'x-default', or 'hreflang tags' are missing.

4 / 5

Distinctiveness Conflict Risk

'hreflang' is a clear, unmistakable niche trigger and the described capabilities are specific to international SEO, leaving only minimal conflict risk with a generic SEO skill.

5 / 5

Total

18

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository

AgriciDaniel/claude-seo

Path

skills/seo-hreflang/SKILL.md

Reviewed

Table of Contents

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