This builds on top of GNU social bookmarks functionality.
Most endpoints of Pinboard v1 API were implemented. We've left out some such as tag delete (as one can't really delete one in GNU social), among others that don't really fit. We have tested our implementation against Pinkt and we will soon be contacting the maintainer so the functionality of using a different
API_TARGET is included with this app (as it was all we had to change to have this working).
Discussion regarding how bookmarks are better expressed in terms of ActivityStreams 2.0 is also developing in SocialHub.