
MapFace Server is the optional Paper plugin for MapFace Client, a Fabric mod that lets players wear filled maps on their head and render the actual map texture directly on their face.
This plugin improves multiplayer syncing for players using the MapFace client mod.
Client-side mod: MapFace Client
MapFace Server helps MapFace clients receive the map data they need to render worn maps correctly in multiplayer.
By default, the client-side mod can only render a worn map if the client already has that map's data. This works well for your own maps, but it can be unreliable when viewing other players.
For example, if another player wears a filled_map that your client has never seen before, your client may not have the map texture needed to render it.
MapFace Server helps solve that by syncing map data from the server to players using the client mod.
The client mod works without this plugin, but multiplayer works much better when the plugin is installed.
MapFace Server improves multiplayer by:

This plugin does not render anything by itself.
Players need the MapFace Client Fabric mod installed to see the visual effect:
Without the client mod, players will simply see normal Minecraft behavior.
Unmodded clients are ignored safely and can still join the server normally.
filled_map in their head slot