Is there any way to access the Photo Stream outside of Photos.app in El Capitan This is basically a duplicate of this question, which was answered for prior versions, but whose answer is no longer applicable in El Capitan.

My question includes programmatically: if there's a programmatic / Cocoa way to access the Photo Stream contents stored (somewhere?) on your computer, then perhaps we can build a filesystem-in-userspace or similar to access them?
So, I've answered this for myself: iCloud Photo Library photos are buried in subfolders of "~/Pictures/*.photoslibrary/Masters" on El Capitan!

Using a savedSearch, the same approach as was popular under Yosemite and earlier, we can create a Finder folder that lists, chronologically, your Photo Stream. The XML version is here (you may have to modify some paths), or you can download my pre-compiled version instead:



Ta-da!