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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".

68

Quality

86%

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SKILL.md
Quality
Evals
Security

Quality

Content

71%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.

The body is well-structured and highly actionable, with complete code examples for all three implementation methods, a severity-graded mistakes table, and clean one-level-deep progressive disclosure to four real reference files. The main costs are token duplication between the Common Mistakes table and the inline validation rules, restatement of hreflang fundamentals, and the lack of an explicit numbered audit workflow matching the well-sequenced generation workflow.

Suggestions

Deduplicate the Common Mistakes table against the Validation Checks sections: code examples like "eng" and "en-uk" are explained inline and repeated in the table — keep the table to issue/severity/fix without re-explaining each error.

Trim restatements of widely known hreflang fundamentals (e.g., the return-tag reciprocity explanation in section 2) down to terse checklist items, moving any nuance to a reference file.

Add an explicit numbered audit workflow (parallel to the Hreflang Generation Process) that includes how to fetch/scan the target site and a final verification pass, so validating existing sites has the same sequenced checkpoints.

DimensionReasoningScore

Conciseness

Mostly efficient checklist/bullet style, but the "Common Mistakes" table duplicates code examples already detailed inline in Validation Checks ("eng instead of en", "en-uk instead of en-GB" each appear twice), and sections 1–4 restate well-known hreflang fundamentals Claude already knows (e.g., "If page A links to page B with hreflang, page B must link back to page A"). Fits the score-3 anchor (mostly efficient but could be tightened) better than 4, where over-explanation would be only minor.

3 / 5

Actionability

Provides copy-paste-ready HTML link tags, HTTP header syntax, and complete sitemap XML examples, plus a method comparison table, templated report output, and a concrete error-handling table. Not score 5 because process steps like "Detect languages: Scan site for language indicators (URL path, subdomain, TLD, HTML lang attribute)" stop short of executable fetch/scan mechanics for auditing a live site.

4 / 5

Workflow Clarity

The "Hreflang Generation Process" is a clear 7-step sequence with embedded validation checkpoints (step 3 "Validate language codes", step 5 "Verify return tags"), and the Error Handling table gives per-scenario recovery actions. Not score 5 because the audit path (validating an existing site) has no equivalent explicit numbered sequence — its flow is only implied by the checks list plus output template.

4 / 5

Progressive Disclosure

References are one level deep, well-signaled per section ("Load `references/cultural-profiles.md`", "Load `references/content-parity.md`", etc.), and all four cited paths exist in the bundle. The dedicated Reference Files section explicitly instructs "Load on-demand as needed (do NOT load all at startup)", matching the score-5 anchor for clear overview with well-signaled references and easy navigation.

5 / 5

Total

16

/

20

Passed

Description

96%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: it states concrete capabilities in third person, includes an explicit 'Use when' clause with natural trigger phrases, and occupies a well-defined niche. The only weakness is that broad triggers like "multi-language" could overlap with a general localization/translation skill.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions — "audit, validation, and generation", "Detects common mistakes, validates language/region codes, and generates correct hreflang implementations" — with comprehensive domain coverage, all in third-person voice. This matches the score-5 anchor (multiple specific concrete actions, comprehensive coverage) rather than 4, where actions would have minor gaps.

5 / 5

Completeness

Clearly answers both "what" ("Hreflang and international SEO audit, validation, and generation... validates language/region codes, and generates correct hreflang implementations") and "when" ("Use when user says 'hreflang', 'i18n SEO'...") with concrete trigger phrases. This matches the score-5 anchor exactly; the explicit 'Use when' clause rules out the caps at 3 or 4.

5 / 5

Trigger Term Quality

"hreflang", "i18n SEO", "international SEO", "multi-language", "multi-region", or "language tags" gives comprehensive coverage of natural terms including synonyms and abbreviations. A user needing this skill would naturally say these exact phrases, matching the score-5 anchor; no common variation is missing.

5 / 5

Distinctiveness Conflict Risk

"hreflang" and "i18n SEO" are highly distinct niche triggers, but "multi-language" and "language tags" could also naturally trigger a general localization/translation skill, creating minor overlap risk with a closely related skill. This fits the score-4 anchor better than 5 (minimal conflict risk) and clearly above 3 (broad overlap).

4 / 5

Total

19

/

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
Reviewed

Table of Contents

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