How to add content to steam cmd rust server

I have made a cmd rust server but I don’t know how to get stuff on it like making classes, spawn points, ect. plz help

There is no SDK yet. Try Pluton or Oxide, they have their own forums. They also have their own specific threads here.

Does it require money?

No.

Also, realize that this game is very much in alpha, and I don’t mean Minecraft alpha.

I tried oxide but I keep clicking sign up but it just keeps saying log In. what do I do?