[Admins]

For the clientside-thing you can use player.attr[] which should work in most cases, although it's not directly sent to the other players via udp.

For global data we can use the irc-communication things right now (there are ways to verify from which server/script the data comes, although not fully documented). In the near future there will also be a way to send requesttext/sendtext messages to other npcservers, which then can be used to load, exchange and store data.