Adding products from File

Hi guys! I have a particular issue here. My suppliers will be supplying over 10,000 different product variations. So clearly, adding them one by one through the admin panel is not an option. I can already read the data into some custom data structures, and all I need to find in MarketPress would be a createProduct() function, and I could access my data structures and provide MarketPress with all of the information need to create a new product posting.

However, I have searched MarketPress and have not found anything close to a createProduct type function. Is there any automated way to add products in MarketPress? Thanks for your help!