Copying files without using API

Hello,

    I'd like to automatize a simple repetitive task that copies bunch of files from one folder to other folders according to the date included in each filename.

It seems quite straightforward but the problem is that I should do it with no API because the API calls quota for my company is already quite tight.

I thought about using davfs2 to mount box root folder to a local directory but it turns out to be way too slow. Are there any other/better ways to achieve this? Couple of options I thought of are: ftp(s) and Box Skills. But since I don't have access to Box Skills, I couldn't test it yet.

Any input would be much appreciated!

Regards,

Jeongsu