While we don't have a lot of rules, we do expect you to adhere to the following
DON'T BE A DICK.
NO USE OF HACKED CLIENTS.
NO ADVERTISEMENT OR SCAMMING.
NO GRIEFING OR DEFACING.
NO LAG-MACHINES OR AUTO-FARMS/AFK-FARMS.
This one is pretty straight forward. Don't be a dick. This is a mature community and we expect you to be (generally) respectful. This community has a zero tolerance policy towards bullying and people found in violation of this may find themselves removed from it. As an extension to this, any sharing of personal information of others without their explicit, written consent is not permitted. We value privacy and so should you. When sharing (your own) personal information keep it to a minimum for your own safety.
We don't allow the use of any client or mod that gives players an unfair advantage when it comes to any aspect of the game. Client-side mods for minimaps, inventory sorting and such are completely fine.