In anyone uses flexget to automate media scrapping and download, now you can use several plugins in flexget to interact with emby.
emby_list - create/modify/delete entries in emby favorite, watched and playlist.
from_emby - read data from emby favorite, watched, library and playlist.
emby_refresh - Trigger emby library scan
emby_lookup - Retrieve information from emby database
You can start using and provide feedback