See your whole day across Yandex 360 calendars

The agent works with your schedule over the CalDAV protocol through caldav.yandex.ru. First it fetches the list of calendars of the connected account — personal ones, shared ones and the ones you were given access to — then reads the events of the period you need together with their time, attendees, location and reminders. That is what the schedule for today and tomorrow is built on, where meeting overlaps are found, free slots of the length you need are counted and the morning summary of the day is assembled.

Yandex calendars are not uniform, and the agent takes that into account: each one has its own collection address, so events are requested per calendar rather than as a single list. CalDAV hands a meeting back as a whole ics object, so the agent expands a recurring series into concrete dates itself and converts the time zone to yours. An event marked in the calendar as not affecting availability is never written into a busy slot.

On the write side the agent books a meeting into a free slot it has found — with attendees, a location and a reminder — moves an event to another time, updates the invitee list and deletes a meeting once the arrangement is called off. An edit is laid on top of the stored record, so everything the agent did not touch stays intact, and if the meeting was changed in Calendar meanwhile, it stops and re-reads instead of overwriting someone else's edit. Before taking a slot it checks against what is already scheduled, and it confirms cancellations and deletions with you: attendees get notified, and that cannot be rolled back in one move.

Access is confirmed with a code on the Yandex ID page, with no token to type by hand: it refreshes itself and dies the moment you revoke the grant in the account. A calendar closed for writing is told apart from a missing event, and the agent names which of the two blocks a write instead of raising a generic error. It holds the request rate itself, fetches long periods in date windows, and when access falls short it says so directly instead of showing an empty day.