Currently it serves 1 apps. To add it to your F-Droid client, scan the QR code (click it to enlarge) or use this URL:

https://f-droid.meansofproduction.biz/repo

If you would like to manually verify the fingerprint (SHA-256) of the repository signing key, here it is:
85 34 6D D7 EF 18 E7 97 D0 78 4C 8C 8C 10 54 13 3B 5B E0 B6 7E 88 21 AE 1B 4E 46 21 DD 21 DD CA