Due to a bit of digging, I found this, which is what the forums uses for the player list. My suggestion is just to actually document this somewhere, so people don't need to go digging through forums javascript files. EDIT: I also found this, though I'm not sure if it's fully public yet.
LOL I thought this was a VERY old thread used to document certain players that have become famous throughout the years for good or bad reasons.
Support because it's cool when things like this are easier to find in case anyone wants to develop neat tools for us.
Make the API yourself!! If you can find the source code and the entire player list then you can definitely make an API and host it yourself As for how useful it would be... I'm not sure it would have much value at all, pretty cool thing for a dev to tinker with though. I can see two ways of doing it 1. Create a webapp that just scrapes the link you provided for the usernames on every GET request, cleans the data, and sends it back 2. Maybe look more into block.js:63, specifically this line XenForo.ajax('index.php?server-status/' + id + '/query', {}, function(ajaxData, textStatus), if you go on the main page and set a breakpoint in the console at this line and read into ajaxData, you might be able to see more useful information than just online players.
Thank you for your support I think I found another endpoint (skyblock.net/friends-api/friends/get/<USERNAME>) but I'm not sure how it works, since I can't seem to get info from it.
I doubt that those endpoints are meant to be used by regular players so it makes sense that there is no public documentation. It's not a public API. mat t