I am curious why .first is is required in this snippet (from the README):

u = MyApi::Person.find(1).first
u.update_attributes(
  a: "b",
  c: "d"
)

It makes more sense to me to do something like:

u = MyApi::Person.find(1)
u.update_attributes(
  a: "b",
  c: "d"
)

This is intentional behavior: https://github.com/chingor13/json_api_client/blob/master/lib/json_api_client/parsers/parser.rb#L62

I will be changing this logic in my fork of the repository to make it work like the second snippet above. I would be interested in the thinking behind that choice, and/or if there would be interest in merging the change from my branch into this one.