What private commands do staff members get? A requirement to become a helper is to be familiar with the commands they can use. But there is no way to know what they can do
A full list of commands is shown and they're explained in the helper call to whoever gets promoted, the familiarity with commands goes to commands such as the ones community players are allowed to use. A few commands staff members can use and are most used by them are /punish and /reports - to punish a player and check the list of chatreports, respectively.