How hard is it to make a custom steno-lithography API? And do I even need one?

Hi, all. My name is J.A and I am co-owner of 3DPrintedDreams with my best friend. (We are both 17.)

During a brainstorm of what should be the flagship feature of our shop should be. We decided to take user images, (exact specifications TBD), and then use an API to transform them into .stl files so my friend can print it on his 3D Printer.

I am asking how hard or "easy" would it be to make such an API and what would be the bottom dollar if I were to make a collab post here about it? If anyone would be willing to listen, I could explain how all this would work in relation to the full stack of my website.

p.s. I understand that experience costs money and I myself have experienced this, but, we spent most of our money on the Pallete 2 from Mosaic. (about $500).

HOWEVER, we still have some money left. If a suggested price is to much for us to pay up-front, 3DPrintedDreams is willing to pay you in installments dermined by mutual agreement.

Thanks for your time and have a nice day!

-Josh

Co-founder of 3DPrintedDreams, LLC (Pending).