Ask Claude to audit a page and it does a genuinely good job. Ask it to audit your site and something quietly goes wrong. It reads your homepage, tells you the title is a bit long, and calls that a site audit.

You have not audited a site. You have audited one page and rounded up.

The problems that cost you traffic are never on one page

They live in the pattern. Forty posts sharing one meta description because the template forgot to fill it in. Every product page rendering three H1s. A sitemap full of URLs that redirect.

None of that is visible from inside one page, because the bug is the relationship between pages, not the page itself.