Pagination

List endpoints, such as a user’s devices, return results a page at a time.

Parameter	Meaning
limit	Results per page, 1 to 100. Default 20.
after	Return results after this ID. Use the previous page’s next.

{"data":[{"id":"dev_9fK2","platform":"ios"}],"next":"dev_9fK2"}

next is null on the last page. The server SDKs page for you when you iterate over a list.