Create automated listing script for sellers using Gameflip's API

I am looking for someone with API expertise to design and create a script that will allow me to automatically list hundreds of items on Gameflip's platform using Gameflip's API. I would like these items to be listed incrementally on a loop (i.e. rather than dumping 200 item listings at once, one item will be listed per minute, and once the full batch is listed, the batch is listed again, starting with the first item in the batch).

Gameflip provides guidance on how to accomplish this (https://gameflip.github.io/gfapi/), but unfortunately, I lack the knowledge required to create this tool.

I would need to be able to run this script via a Macbook laptop.