I spent quite a while trying to fix a non-issue: I couldn't find .well-known/site.standard.publication in my browser.
However, the reason it wasn't "existing" is that it's being served as a generic download rather than a text file. When my browser tried to open it, the request was "aborted" because the browser didn't know how to render the .publication extension and simply tried to download it.
fix:
public/_headers#
/.well-known/site.standard.publication Content-Type: text/plain
And yes https://site-validator.fly.dev/ can deal with this, but it is a low cost enhancement?
Thanks for bringing this up! I think this is actually depending on what framework you're using and what hosting provider you have.
_headersis something used by Netlify and Cloudflare Pages so it does have pretty good support, but this isn't a Sequoia specific issue. Thesite.standard.publicationis primarily there for indexers to help validate the site and publication. Good call out all the same!