I’#m sorry, I can’t see this anywhere on your support site.
I can see lots of information about connectors, but if I want to build my own, is there a specification of the XML required to pass in to the scheduler, and also of the data that goes back out when saving a change to an event?
you can use one of these formats for data loading
id, text, start_date, end_date are mandatory properties, there also can be arbitrary custom properties.
Sending updates is usually done via dhtmlxDataProcessor, request formats are described here docs.dhtmlx.com/dataprocessor__index.html - when it’s initialized on the page and is binded to the scheduler, it automatically traces all needed API events and sends updates to the server.