Also, what does "Run request on demand" mean? How is that demand determined?

Question: how is your service different than generating a request from curl in Postman, saving it, then using?

In all seriousness, I'm sure there is a use case for this, but is is not at all self-evident, so you probably need to explain why you built this. Or maybe that is what is in the video, but people aren't going to watch a video if the top of the page doesn't already grab them in some way.