Any GET call for the SpringServe API will limit the response to 50 objects. To receive the entire list of objects, you have a couple of useful parameters available.
Per Parameter
The per parameter will adjust how many objects you will receive in a single call. For example, if you want 100 supply tags per page:
GET /api/v0/supply_tags?per=100
Page Parameter
Use the page parameter to choose the page you are getting. To receive 100 supply tags per page and to get the second page:
GET /api/v0/supply_tags?per=100&page=2