One year ago, I set up the API connector with different calls to my ‘dev’ backend. Then, I wanted to do the same for my ‘live’ environment backend, where there is a minimal change in the URL (changing ‘dev’ for ‘live’ prefix). At that time I was in a hurry doing a lot of stuff, so I just did a quick search in Bubble Forum and the answer was ‘duplicate API calls’. So I just did it, but I annotate a future work to my board for handling this situation better, being able to have just one API call set being able to parametrize the API calls.
So time arrived, and last week I took the challenge. After doing some tests, my workaround worked. The trick is to parametrize each API call with a parameter indicating the environment prefix. In my case:
As you can see here, I defined ‘envPrefix’ as a parameter of the call. Then, I’ve also defined an ‘Option Set’ in Bubble Data in order to have the constant definition of url prefixes depending on live/dev environment:
Finally, when I call the defined API call from my Bubble pages, I use the ‘isn’t live version’ formatted as text in conjunction with the created ‘BackendEnvironment’ option set for selecting the environment prefix of the URL to call.
BTW, this trick is also useful for dealing with API calls defined in the same Bubble server as backend workflows (if you need to retrieve some data after calling the workflow), so you can define an API call once. In this case, the defined Option Set could be something like:
Let me know if it has been useful to you! 
