our-claude-skills/custom-skills/26-seo-international/SKILL.md

name, description

name	description
26-seo-international	International SEO audit and hreflang validation for multi-language and multi-region websites. Triggers: hreflang, international SEO, multi-language, multi-region, content parity, x-default, ccTLD, 다국어 SEO.

International SEO Audit

Purpose

Audit international SEO implementation: hreflang tags, URL structure patterns, content parity across language versions, redirect logic, and Korean expansion strategies. Identify issues preventing proper multi-language indexing.

Core Capabilities

1. Hreflang Validation - Bidirectional links, self-reference, x-default, language code validation
2. URL Structure Analysis - ccTLD vs subdomain vs subdirectory pattern detection
3. Content Parity Audit - Page count comparison, key page availability across languages
4. Redirect Logic Audit - IP-based, Accept-Language redirects, forced redirect detection
5. Korean Expansion - Priority markets (ja, zh, en), CJK URL issues, regional search engines

Data Source Selection

International SEO spans hreflang validation (crawl-derived), content parity (crawl-derived), and per-country traffic (modelled). Pick one backend per data class.

Backend	Best for	Notes
OurSEO (CLI + MCP)	Default — hreflang validation, content parity, redirect logic, fix engine	CLI: our collect crawl, our audit tech, our fix hreflang. MCP: mcp__ourseo__crawl_website, mcp__ourseo__audit_page. Only backend that owns the hreflang FIX path.
Ahrefs MCP (mcp__ahrefs__*)	Per-country traffic distribution; hreflang issues from Ahrefs site audit	web-analytics-countries, site-explorer-metrics-by-country, site-audit-issues.
Semrush MCP (mcp__semrush__*)	Per-database organic visibility (compare kr, jp, us, etc.)	organic_research with different database params; siteaudit_research for site-audit issues.
OurSEO CLI — Naver / per-region SERP	Korean expansion + regional search engine SERP checks	our research naver serp, our research keywords compare --engines naver.
WebSearch / WebFetch	Test geo/Accept-Language redirect behaviour, verify ccTLD handling	Required for redirect-logic audit — can't be done via SEO MCPs.
DataForSEO MCP (mcp__dfs-mcp__*)	Per-country SERP fallback when our CLI isn't running	serp_organic_live_advanced with location_code per country.

How to pick

1. User named a backend explicitly → use it.
2. User preference memory — read feedback_seo_tool_preferences.md; honor the task-type default.
3. Task is hreflang validation / parity / fix → use OurSEO (CLI primary, MCP for Desktop). No alternative owns the fix engine.
4. Task is per-country traffic distribution → Ahrefs web-analytics-countries or Semrush organic_research across multiple database values.
5. Task is redirect-logic audit (IP-based / Accept-Language) → WebFetch with explicit headers.
6. Default: OurSEO crawl + hreflang audit for the validation work; Semrush MCP for cross-market visibility.
7. Still ambiguous + non-trivial → ask once via AskUserQuestion.

Backend call patterns

OurSEO CLI (default — hreflang validation + fix):

our collect crawl https://<site> --max-pages 200
our audit tech https://<site>
our fix hreflang --site https://<site>

OurSEO MCP (Claude Desktop):

mcp__ourseo__crawl_website(url="<site>", max_pages=200)
mcp__ourseo__audit_page(url="<url>", audit_type="tech")

Ahrefs MCP (per-country traffic):

mcp__ahrefs__web-analytics-countries(domain="<site>")
mcp__ahrefs__site-explorer-metrics-by-country(target="<site>")
mcp__ahrefs__site-audit-issues(project_id="<id>")

Semrush MCP (cross-market visibility):

mcp__semrush__organic_research(query="<site>", database="kr")
mcp__semrush__organic_research(query="<site>", database="jp")
mcp__semrush__siteaudit_research(query="<site>", database="us")

Redirect-logic audit (manual):

WebFetch: https://<site>/ with Accept-Language: ko-KR
WebFetch: https://<site>/ with Accept-Language: ja-JP
WebFetch: https://<site>/ with Accept-Language: en-US
# Compare redirect chains; flag forced geo/language redirects.

Always record the chosen data source(s) in the report Overview so future audits can compare like-for-like.

Workflow

1. Hreflang Validation

1. Fetch target URL and extract hreflang tags (HTML head, HTTP headers)
2. If sitemap provided, also extract xhtml:link hreflang from XML sitemap
3. Validate language codes (ISO 639-1) and region codes (ISO 3166-1)
4. Check bidirectional links (if A references B, B must reference A)
5. Verify self-referencing tags on each page
6. Check x-default tag presence and validity
7. Detect conflicting hreflang for same language-region
8. Report all errors with severity levels

2. URL Structure Analysis

1. Crawl known language versions of the site
2. Classify pattern: ccTLD (example.kr), subdomain (ko.example.com), subdirectory (example.com/ko/)
3. Check consistency across all language versions
4. Provide recommendation based on business context

3. Content Parity Audit

1. Discover all language versions from hreflang tags
2. Count pages per language version
3. Check availability of key pages (home, about, contact, products/services)
4. Compare content freshness (last modified dates) across versions
5. Flag significant gaps in content availability

4. Redirect Logic Audit

1. Test URL with different Accept-Language headers (ko, en, ja, zh)
2. Check if redirects are forced (no way to override) vs suggested (banner/popup)
3. Flag forced geo/language redirects as anti-pattern
4. Recommend proper implementation (suggest, do not force)

5. Korean Expansion Analysis (Optional)

1. Analyze current traffic by country via our-seo-agent CLI or pre-fetched data
2. Recommend priority target markets for Korean businesses
3. Check CJK-specific URL encoding issues
4. Advise on regional search engines (Naver, Baidu, Yahoo Japan)

Output Format

## 다국어 SEO 감사: [domain]

### Hreflang 검증
- 검사 페이지 수: [count]
- 오류: [count] (심각 [count], 경고 [count])
- 양방향 링크 누락: [list]
- 자기참조 누락: [list]
- x-default: [있음/없음]

### URL 구조
- 패턴: [ccTLD/subdomain/subdirectory]
- 일관성: [양호/비일관]
- 권장사항: [recommendation]

### 콘텐츠 동등성
| 언어 | 페이지 수 | 핵심 페이지 | 최신성 점수 |
|------|----------|------------|-----------|
| ko   | 150      | 5/5        | 90        |
| en   | 120      | 4/5        | 75        |

### 리다이렉트 로직
- IP 기반 리다이렉트: [있음/없음]
- 언어 기반 리다이렉트: [있음/없음]
- 강제 리다이렉트: [있음/없음] (없어야 정상)

### 종합 점수: [score]/100

### 권장 조치사항
1. [Priority fixes in Korean]

Notion Output (Required)

All audit reports MUST be saved to OurDigital SEO Audit Log:

• Database ID: 2c8581e5-8a1e-8035-880b-e38cefc2f3ef
• Properties: Issue (title), Site (url), Category (International SEO), Priority, Found Date, Audit ID
• Language: Korean with English technical terms
• Audit ID Format: INTL-YYYYMMDD-NNN

Limitations

• Cannot detect server-side IP-based redirects without proxy testing
• Content language detection requires sufficient text content
• Large sites (10,000+ pages) require sampling approach
• Sitemap-based hreflang requires XML sitemap access