Currently it serves 20 apps. To add it to your F-Droid client, scan the QR code (click it to enlarge) or use this URL:

https://fdroid.basso.com.au/fdroid/repo

If you would like to manually verify the fingerprint (SHA-256) of the repository signing key, here it is:
3B 2A D0 07 F2 D3 D0 A1 B2 B7 62 39 C4 75 87 1D D5 03 25 26 C8 2E C9 8C 9B FC BF C8 52 20 AC 96