Lists multiple specific concrete actions and domains: crawlability, indexability, rendering, site architecture, structured data, page experience, security, and internationalization. The description clearly names what the audit covers.

Clearly answers both 'what' (run a comprehensive technical SEO audit covering specific areas) and 'when' (explicit 'Use this skill whenever...' clause plus a 'Triggers on' list and even implicit trigger scenarios like traffic drops). Both dimensions are thoroughly addressed.

Excellent coverage of natural trigger terms users would say: 'technical SEO', 'crawl issues', 'indexing problems', 'sitemaps', 'robots.txt', 'canonical tags', 'schema markup', 'page speed', 'Core Web Vitals', 'hreflang', 'redirects', 'traffic drops', 'migration concerns'. These are highly natural terms that match real user queries.

The skill occupies a clear niche—technical SEO auditing—with highly specific trigger terms like 'robots.txt', 'canonical tags', 'hreflang', 'JSON-LD', and 'redirect chain' that are unlikely to conflict with other skills. The domain is well-defined and distinct.

The content is mostly efficient and well-organized, but includes some sections that could be tightened. The 'When NOT to use' section and 'Required inputs' section add useful context but the 6-layer framework descriptions contain some explanatory text that Claude would already know (e.g., 'Canonicals are hints, not directives'). Overall reasonably lean for the breadth of the topic.

The skill provides a clear checklist-style framework and workflow steps, but lacks concrete executable commands, code snippets, or tool-specific instructions. Guidance like 'Use a crawler to enumerate URLs' and 'test with the URL Inspection tool' is directional rather than executable. No specific curl commands, script examples, or tool configurations are provided.

The 7-step workflow is clearly sequenced and logically ordered, but lacks explicit validation checkpoints and feedback loops. For an audit involving potentially destructive actions (migrations, redirect maps), there's no 'validate then proceed' pattern. The cross-reference step (step 5) is a partial validation but isn't framed as a gate. Missing verification steps for migration scenarios cap this at 2.

The skill references two external files (audit-template.md and migration-checklist.md) which is good progressive disclosure design, and the 'When NOT to use' section cross-references other skills. However, no bundle files were provided, so the referenced files don't actually exist. The 6-layer framework is detailed inline which is appropriate for the overview, but the failure patterns and output format sections could potentially be split out.