Your calendars don't talk to each other. Let's fix that.
Your partner adds “Pediatrician 3pm” to the family calendar. CalendarPipe copies it to your work calendar automatically — so you never double-book over school pickups, doctor visits, or the afternoon you're on kid duty.
- Free forever plan
- No credit card
- 2 min setup
Pediatrician
Thu 3 – 4 PM
Personal commitment
Thu 3 – 4 PM
“My partner added ‘Anna's school play, 2pm’ to our family calendar on Monday. By the time I checked my work calendar that afternoon, it was already blocked off — no standup conflict, no awkward last-minute reschedule. That's when I stopped worrying about missing family stuff.”
Early adopter
2 calendars synced
Calendar sync, minus the headache
Try It Yourself
Build a pipe visually and see the results instantly
Sync to anyone — they don't need an account
Events arrive as normal calendar invitations. No installs, no permissions, no “can you sign up for this app?” conversations.
Team Retreat: Barcelona
Mon–Fri, Mar 17–21
Sarah, Mike, +8 others
Transform to "Away for work". Deliver as invitation.
Away for work
Mon–Fri, Mar 17–21
Works behind corporate firewalls too. When IT blocks third-party OAuth, invitation-based delivery still gets through — because it's just email.
Give your AI agent a calendar
AI agents that schedule meetings shouldn't need access to your users' calendars. Give them their own — with real email invitations that just work.
Your agent gets its own calendar
Spin up a hosted calendar with a real email address. No OAuth dance, no user credentials — just an API key.
Real invitations, not hacks
Attendees get standard email invitations they accept in one click. Works with every calendar app. No sign-up required.
Three API calls to production
Create calendar, book meeting, done. Cancellations, updates, and notifications happen automatically.
See it in action
1. Create a calendar
Spin up a hosted calendar with its own email address.{ name: "Executive Assistant", timezone: "America/New_York" }{ id: "cal_a1b2...", calendarEmail: "cal-...@in.calendarpipe.com" }2. Book a meeting
Add an event — attendees get a real email invitation.{ title: "Q1 Review", start: { dateTime: "...T10:00Z" },
attendees: [{ email: "cto@co.com" }] }Event created → invitation sent to cto@co.com
3. Cancel — attendees get notified
Delete the event and cancellation emails go out automatically.→ cancellation sent
Indie-built in Prague
“My wife and I share a family calendar. Events tagged with a “J” are ones I need on my work calendar. I couldn’t find a tool that let me set up that exact rule — so I built one.”
Jakub Beneš
Free to start. Ridiculously cheap to upgrade.
Most calendar sync tools charge $10+/month. We thought that was silly.
Free
For the curious
Pro
For the calendar-obsessed
billed annually at $40
Your data stays yours
We built CalendarPipe with the kind of paranoia your data deserves.
We never see your password
You authenticate directly with Google or Microsoft. We get a scoped token — never your credentials.
We don’t store your events
Events are fetched, piped through your rules, and synced to the target. We never keep a copy of your calendar data.
Pipes run in a sandbox
Your code executes in an isolated environment with zero network access. Your data can’t leak even if you tried.
Frequently Asked Questions
Your calendars won't fix themselves
Two minutes to set up. Zero events lost in the cracks ever again.