@klandwehr I had some help from the iaWriter folks via twitter. This is the url of for the action to put a new draft into a folder I have in iCloud called “Notes”

I downloaded the iAWriter action from the Drafts Action Directory, duplicated it and tinkered with the url until I got what I was looking for.

iawriter://new?text=[[draft]]&path=/Locations/Notes

twitter.com/iAWriter/...

Hope that helps!