There is no /help. But most of the typical server commands are here. Here are some you might not know: /tptoggle (allows if people can /tpa to you, works good if someone wants to tpa spam you.) /ci (clear inventory) /compass (brings up travel compass) /realname (displays a /nick) /server <server name> /hider (hides players) /leave (leaves a game) /join (joins a game) /spectate (spectates a game, kit, agar and summo only, and I think I missed one) /warnings (displays the current warns you have active on the server /forums (links to the forums) There might me more that I missed tho
Us regular users, nor staff members have access to /help. The reason is because it lists the plugins the servers use, I believe.
