Hello.
Having spent a day messing about the Zotero server REST API, and
implementing some of the API methods in Python (https://github.com/
urschrei/pyzotero), I have some questions regarding it (and its
future, if anyone can comment):

1. Are there plans afoot to update the format of the returned Atom
doc? At the moment, it works, but it's slightly awkward to work with;
for example, the primary use case for the API (as I see it) is to
retrieve a set of items, and work with their data (title, author,
publisher &c.), but the format actually makes this more difficult than
it ought to be, by returning some of that information within the
'content' field. It's pretty simple to grab some items and display
their titles, but in order to display their authors (as opposed to the
'metadata' authors, I have to additionally parse an XHTML fragment. I
understand that item data and metadata must be separate, but this
seems unnecessarily convoluted.
2. Are there any plans afoot to offer the data in other formats. I was
thinking specifically of JSON. I haven't yet checked to see whether a
Zotero item can be completely mapped onto a JSON object (it's not easy
to find even a documented Atom representation. Shouldn't it be on the
same page as the REST API docs?), but again, it seems like an ideal
choice for at least a subset of an item's data.