Some requests can return a lot of database entries, that make the client request slower and the API overloaded. To overcome this problem, certain endpoints have a pagination, and the caller must compose with it.
By default, the first ten entries are returned. To get more, you must add the page parameter at the end of the URL, with the page number of your choice. The total amount of pages is available under the pages property, at the root of the JSON alongside code and data. If you go past this number, the data will be empty.