Tried it out today. The idea is the fantasy of what Siri should be right? However, just asking basic queries like "What events are on all my calendars tomorrow?" completely fails. It doesn't understand the concept that it needs to query for all the events on my calendar for the next day.

I eagerly await someone to develop something that does what this promises to do. However, I'm not sure anyone will for a few reasons: - Product is potentially immediately disrupted by Apple/Google if they get Siri or Google Assistant to do it. - The ability to make tool calls that make sense largely depends on how your life is organized. Personally I run multiple calendars and display them all at once for various reasons. Others likely run one calendar.