How to get all unread items using Feedly API

OK, either this is incredibly obvious and I'm just too dumb to see it, or it is not possible at all.

I created a Feedly developer access token and can call some end points just fine, like /profile, /categories, etc. Currently testing them with curl, but eventually will do this in Ruby.

What I can't find from the documentation (or even by Googling) is how to access all the unread entries from all my subscriptions just like I do in the Feedly app:

As far as I understand, Streams are for specific feeds. And the closest thing to the All stream, I think, is the Global Resource Id "global.all". But when I call it according to the documentation I get "API handler not found".

curl -H 'Authorization: OAuth [<MY_ACCESS_TOKEN>]' http://cloud.feedly.com/v3/user/<MY_USER_ID>/category/global.all

{"errorCode":404,"errorId":"ap5int-sv2.2018082612.1607238","errorMessage":"API handler not found"}

At some point I thought maybe Feedly just doesn't support this and went and looked at Inoreader's API documentation and it looks pretty much the same. There is no /All stream where I can pull my unread entries. So I feel like I'm missing something very obvious here.

What I am trying to do:

Basically I want to create an app for myself where I pull all my unread entries and flag the ones I'm interested in as "Read Later". This is part of a bigger workflow app that I'm working on.

You're almost there. To get a stream of all your unread articles, the syntax would be:

curl -H 'Authorization: OAuth <access token>' 'https://cloud.feedly.com/v3/streams/contents?streamId=user/<user id>/category/global.all&unreadOnly=true'

The <user id> can be obtained by the Profile API which can be found here.

The streams API is documented here. Hope this helps.