Rules

Eight of them. They exist so the city stays worth living in. /rules shows the same list in game.

Be decent to people. No harassment, slurs, hate or threats, in chat, in names, or on signs. Banter is fine; cruelty is not.
Do not grief. Claims protect builds, but anything unclaimed still belongs to whoever made it. Breaking, stealing from or spoiling someone else's work gets you removed.
No cheats, hacks or x-ray. Modified clients that give an advantage are detected and jailed automatically. Cosmetic mods, minimaps without cave view, and voice chat are fine.
No exploits. Duping, glitching through claims, abusing a shop price bug. Report it with /report and you get thanked instead of banned.
Trade honestly. Scams, fake shops and bait listings on the auction house count as stealing.
Keep chat usable. No spam, no advertising other servers, no flooding with caps. Keep it PG-13.
One person, one account. Alts to dodge a punishment or farm rewards are banned along with the main.
Staff decisions stand. Disagree? Appeal on Discord, calmly. Arguing in chat does not help your case.

Punishments scale: a warning, then a mute or jail, then a temporary ban, then a permanent one. Cheating skips straight to jail.