Hello,
I have looked at the video, and my understanding you want to pass the site interaction via your simflied interface as shown in painter.
You are going to need tow work with cURL to interact with the API, and if it doesn't feet the needs you have to make an intillgent bot to act as proxy between your interface and the site, lucky I have good experience in both :D.
Now I have no work to do, and if you like to discuss the project more wth then am happy to.