Fetch contacts from iCloud - Javascript Client side

can't understand if apple iCloud have an API for client side only like Google do. I want to fetch the contacts of Account from the service.

So I already did it with Google (by using GoogleAuth API - Example) and now I trying to do the same thing with Apple Accounts.

Can't understand how it works there, I'm sure they have some API that allows to fetch contacts.

Some one did it before? Where can I get examples / docs?