mister_monster on Nostr: How easy is it to run without the web client? I know I'm probably asking before ...

How easy is it to run without the web client? I know I'm probably asking before looking at docs. I see groups (I know youre not calling them servers lol, what are we calling them?) have their own relays specified, and if I wanted to run a relay and all that but dont want a web client available to use, is that something difficult to set up?