Audit a site's structure, then plan the new one
Drop the site's sitemap.xml, a crawl export or a list of URLs. Your browser draws the current structure and finds what is wrong with it - duplicate spellings, messy URLs, pages buried too deep, sections with no hub, orphans - free, before you sign in, and nothing is uploaded. Then a paid run writes the architecture plan: the page hierarchy, the 301 redirect map, the navigation and the internal links.
Each example has a saved model run, so you can see the whole page for free.
Your recent plans
What this does, and what it does not
The prescan reads the URLs you give it and nothing else - it does not crawl the site. It checks the conventions from the source skill: readable, lowercase, hyphenated paths with no file extensions, query strings, dates or ids; one trailing-slash policy; paths that mirror the hierarchy; no page buried deeper than is usual for the site type; a hub page for every folder; one parent per idea. With a crawl export's Inlinks column it also finds pages nothing links to. From the sitemap protocol it checks the 50,000-URL limit per file and notes that Google ignores <priority> and <changefreq> (sources: sitemaps.org protocol; Google Search Central, "Build and submit a sitemap", checked 2026-09-26). The 3-click rule, 4-7 header items and typical depths are house guidelines, not search-engine rules.
The plan is checked against your inventory: it may propose new pages, but it may not claim a page exists when it is not in your list, redirect a URL you never gave, leave an old URL with nowhere to go, or chain redirects. Nothing on your site changes. Derived from the agent skill @coreyhaines31/site-architecture (coreyhaines31/marketingskills, MIT). The example sites are fictional.