it supports explain and searchRetrieve, with mods and dc schemas. should page through records just fine, i think, if you pass it the correct params. lots of other suggested things are not supported (esp. no diagnostics, yet).
Simple unalog keyword searching via IndexedCatalog, not integrated very much yet, and only for your own entries, but it kinda works. Log in and try searching for tags, title text, comment text, or even partial urls. Lots of issues to think through, still. :)