What problem does it solve? Technical SEO issues like broken robots.txt rules, slow Core Web Vitals, missing security headers, and JavaScript rendering problems silently block sites from being crawled and ranked. This Skill runs a structured audit across nine categories and produces a prioritized fix list instead of a vague checklist. ## Core Features & Use Cases - Nine-category audit: Covers crawlability, indexability, security headers, URL structure, mobile optimization, Core Web Vitals (LCP, INP, CLS), structured data, JavaScript rendering, and IndexNow protocol. - AI crawler management: Audits robots.txt rules for GPTBot, ClaudeBot, PerplexityBot, and other AI crawlers, distinguishing training crawlers from user-triggered fetchers that ignore robots.txt. - Agent-friendly page checks: Scores accessibility-tree quality for AI agents using Playwright-based scans, aligned with the Lighthouse Agentic Browsing category. - Use Case: Run a technical SEO audit on a newly launched e-commerce site to catch canonical conflicts between server-rendered HTML and JavaScript-injected tags before they cause indexing loss. ## Quick Start Ask the assistant to run a technical SEO audit on your site URL, for example by saying: audit https://example.com for technical SEO issues and prioritize the fixes.