API calls with return data for processing

I’m looking for a plugin that will allow me to send the data from a contact form (including form-data encoded files attached to the BODY) to an API, get back the response (documents, same way) and display them to the user, allowing them to see and download the results. I’ll need to be able to call other APIs with lots of parameters (like running GUIs on the front end that call 5 or 6 APIs)

I can’t find a plugin that can do it, only ones that send data – they can’t do anything wiht the response (making them kinda useless) I’ve tried contact form to api, and wgetAPI, but as said, they do not allow manipulation of the response-

Any suggestions would be appreciated