FakeYou's API does not have public support for an API key so unless you have been given an API token by the owner, you're left with session authentication.
This guide will predominantly revolve around TypeScript, but in the end, we will be using HTTP as our transfer protocol. So long as your language works with HTTP, you should be able to translate it to your language of choice!
We will use session authentication, which means you need to send across a cookie to the API so that FakeYou recognises you.