Hello,
There is a lack of guidelines regarding the rate at the mediawiki API may be used.
Specifically for the enwiki and commons api (if it doesn't matter, please say so):
For bots:
Are simultaneous uploads permitted? E.g. uploading 3 20MB files simultaneously to the
commons on a 1Gbit/s line. What is the max rate permitted?
I was recommended at
https://bugzilla.wikimedia.org/show_bug.cgi?id=44584 to post to this
mailing list.
-Small