https://github.com/ArthurHeitmann/arctic_shift
It's api works till now, and the author seemed to be very active. Idk if the you @pullpush-actual knows about it, but you might work with him.
Found another project currently archiving reddit's content
Btw, I've already tried his api with undelete.pullpush.io, it works perfect. The api document is at https://github.com/ArthurHeitmann/arctic_shift/tree/master/api
22 days later
Yes, Arthur is doing a better job that I do in many respects 