We have a deal on Paw, a full-featured HTTP client that lets you test and describe the APIs you build or consume. It features a native macOS interface to compose requests, inspect server responses, generate client code and export API definitions. Paw is $24.99 through our deal, but coupon code BFSAVE15 brigs it down to $21.24 at checkout.
Check It Out: Build Better Web Apps and Software with This Full-Featured API Tool for Mac: $21.24