Does it have to be meta when returning a response in Rest?

Question

RESTful API

Actually the question is in the title. For example, my endpoint returns some information, is it necessary to make another meta section in the response? I see it in many endpoints in the system, but there is mostly not very necessary data, for example server_time (although someone may need it, if you need it, then tell me why :))

Answer 1

in the concept of REST, this information should not be. Well, except in the headlines and even that is not a fact. REST operates only on the state of system objects