CubeCraft Level + Rank

On CubeCraft servers the mod displays a player's level above the head as a nametag such as Lv.127, colours the rank in the tab list with a small coloured bar beside each entry, and shows the level in a tooltip when the cursor hovers over a name in the player list or chat. Levels that are unknown appear as a grey Stone entry until they are received. The mod stores what it learns in a local database, so players met earlier are recognised almost instantly in later lobbies. The mod works with Fabric and runs on the client alone, so servers need nothing installed.

The information it shows comes from data CubeCraft already sends to the client: the scoreboard team data in the tab list and the ordinary client-visible commands. Automatic lookups are on by default. After a player joins a lobby, the mod waits for the player count to settle, then runs CubeCraft's normal level command once, and only when at least three players are still unknown. It sends no more than one command per lobby and keeps a two-minute gap between sends. A user who prefers a fully passive mod can turn automatic sending off in the settings screen; the same command can still be typed by hand.