It looks like the Libre.FM API is compatible with Last.FM and requires just changing API URL e.g. https://libre.fm/2.0/?method=user.getRecentTracks&user=Mikaela&limit=1&format=json which I tried with WeeChat's lastfm2.py script.
I thought there was an open issue about this, but looks like not and it has probably just been discussed on IRC a couple of times.
I am not sure how alive the upstream project is though.
It looks like the Libre.FM API is compatible with Last.FM and requires just changing API URL e.g.
https://libre.fm/2.0/?method=user.getRecentTracks&user=Mikaela&limit=1&format=jsonwhich I tried with WeeChat's lastfm2.py script.I thought there was an open issue about this, but looks like not and it has probably just been discussed on IRC a couple of times.
I am not sure how alive the upstream project is though.