The difficult part is that only a user’s original home server tracks karma effectively.

While there was still a websocket API (which could bypass browser limitations) I wrote a quick script that collected the karma for an entire page of comments from each user’s home server. It worked quite well, but I can understand why the devs left it out.

Now that the websocket API is dead, I don’t think there’s a good way to do this from the browser anymore. I could set up a small API server that would send the necessary requests for me and implement some kind of caching, but that sounds like too much effort for something only I would use anyway.