Add native CalDAV support to ActivePieces, with first-class compatibility for Nextcloud Calendar.

Summary
Add native CalDAV support to ActivePieces, with first-class compatibility for Nextcloud Calendar.

Problem
Many users rely on self-hosted or privacy-focused calendar solutions such as Nextcloud. While ActivePieces already supports Google Calendar, there is currently no way to interact with CalDAV calendars. This makes common automation scenarios impossible, especially when users want to synchronize or abstract calendar data between Google Calendar and Nextcloud.

At the moment, users cannot:

• Create, update, or delete events in a Nextcloud calendar

• Search or list calendar events via CalDAV

• Build privacy-preserving calendar syncs that avoid exposing event details

Why CalDAV and Nextcloud matter

• CalDAV is an open, widely adopted standard

• Nextcloud is one of the most common self-hosted groupware solutions in Europe

• Strong relevance for GDPR-conscious and privacy-focused users

• Frequently used in combination with Google Calendar in hybrid setups

Concrete Use Cases

• Sync non-all-day Google Calendar events into Nextcloud as abstract “busy/away” entries

• One-way or filtered calendar synchronization

• Team availability calendars without exposing private event details

• Migration scenarios from Google to self-hosted calendars

Suggested Capabilities

• Authenticate via CalDAV (username + app password)

• Support common CalDAV operations:

  • List calendars

  • List events (with date range and text filter)

  • Create event

  • Update event

  • Delete event

• Tested and documented compatibility with Nextcloud Calendar

Expected Impact

• Enables a whole class of calendar automations currently not possible in ActivePieces

• Strong value for European users and self-hosted setups

• Positions ActivePieces as a privacy-friendly alternative to Zapier-style tools

References

• CalDAV standard: RFC 4791

• Nextcloud Calendar: https://nextcloud.com/calendar/