coffeehack.ino is the arduino/squirrel-code that runs the local interface to the machine's maintenance port. Run it on a Spark Photon. webhook-coffee.json is what you'll need to particle webhook create in order for the Photon's event trigger to cause a web requests to the API.
test-app shows how to get data out of the API (over DDP)
reverse-engineering has info on the machine, the v? files are EEPROM dumps.
(jura.py is an earlier attempt in python on a raspberry Pi.)