This is a systematic SEO audit that actually opens your site in a browser to check what search engines and social platforms will see. It walks through meta tags, structured data validation, Open Graph for social sharing, crawlability issues like missing sitemaps or broken robots.txt, and the critical SPA problem of shipping blank HTML to crawlers. The phase structure is thorough: it auto-detects your framework and rendering strategy, asks which pages matter most, then runs browser-based checks across four categories with specific IDs like META-01 or CRAWL-10. Use this before launch or after migrating to an SPA framework when you realize Google might be indexing nothing. It catches the technical foundation issues that kill organic traffic before content strategy even matters.
npx skills add https://github.com/shiplightai/agent-skills --skill seo-review