Developer documentation
Connect owners' calendars and prices to your own software with an open API, webhooks and iCal. When one agency sends a reservation, the dates close for every subscriber within seconds.
curl -s "https://api.cesisync.com/v1/properties/<id>/availability?checkIn=2027-07-10&checkOut=2027-07-14&guests=4" \
-H "Authorization: Bearer $BP_KEY"Quickstart
Get a key, list properties, subscribe, send a reservation.
Sandbox
Try every scenario without touching real data; simulate owner actions.
Webhooks
Signed events, automatic retries and catching up on missed events.
What you can do
- Query properties by place, type, capacity and amenity keys.
- Read the calendar and prices of subscribed properties day by day.
- Get availability and an itemised price quote for any dates.
- Send holds, reservations, changes and cancellations; double bookings are stopped at database level.
- Hear about calendar, price and subscription changes at once through webhooks.
- Take your data with you any time as JSON, ZIP, CSV or iCal.