This describes my issue exactly. I'd like to maintain my upcoming events in one central place & have the capability to feed or push it elsewhere (Facebook Events, LinkedIn Events, Eventbrite, MeetUp, etc.) - it just makes it easier to promote our cause. Nobody likes double data entry, & I'm even willing to figure out a workaround using workflow automation tools but haven't been able to yet & still be compatible with the Events module.
Squarespace clearly is using APIs for Events, but they don't even document it from their Developer pages or expose this feature. We have a Squarespace Business Plan, & this still doesn't seem feasible.
* https://events.squarespace.com/api/v1/events
* https://xxx.squarespace.com/api/events/RecordEvent