In the past, we offered users a way to list and browse the packages available on the pkg mirror, e.g., at http://pkg.freebsd.org/FreeBSD:12:amd64/quarterly/All/. Due to the cost of handling such requests, the site now returns 403 instead. We should either present users with a static website explaining the change or at least document what happened in, e.g., FAQ.
(In reply to Mateusz Piotrowski from comment #0) Yes and I think it would be a good idea to create an index.html in those directories, and instruct people that the same information can be retrieved by downloading and parsing https://pkg.freebsd.org/FreeBSD:12:amd64/quarterly/packagesite.txz I believe this need to slightly modify the pkg mirror scripts to put that static page. It may take a while to research how to do so (or asking one knows) but it is worthwhile to do so.
Is this still current? I'd be interested to look into it.
(In reply to Pierre from comment #2) I think it is still current, yes.