I recently built this Chrome Extension on top of Dynalist (post). One of the features of the extension is the support for adding tags to links. Currently, I can’t show an auto-complete with existing tags as there is no API for it. Is it possible to get an API for fetch list of all tags? 
The current alternative is to download all documents and extract the tags yourself.
I understand, not very optimal in your case.
Yeah, I don’t want to be parsing all the notes just to extract tags.
The Dynalist Bookmarker does most of what I expect from a clipper plugin, but not having auto-complete tagging makes it feel incomplete. This feature really should be available in the API.