It is possible to submit jobs to a PrintFactory RIP using a local hotfolder and XML.
PrintFactory uses an internal XML structure which is consistent throughout the system (local and cloud). You can see how the XML should be structured by opening a saved layout template and working with the different nodes, or by opening the settings.xml in a ripped files work folder. You need to know the GUID of the file to do this (which can be retrieved from the job details in the cloud).
A PrintFactory Connect subscription is required. For more information please get in touch & we can walk you through XML job submission techniques.