I can create a URL for a simple API request over HTTP. And I can URL Escape it, to make it safer to use. But I can't see a simple way using the in-built workflow actions to make the HTTP call and capture the resulting text output.
The examples on this site, and the ones in Federico Viticci's eBook, have very few examples of this type of operation. The closest option seems to be to usen the "Open URL" workflow action for the built-in browser, but then the closest variable to get the resulting text from it is [Browser Selection], but that doesn't return anything if there is no selection.
I'm sure I must be missing something simple ... all help gratefully received.