Changelog
Version history of the CheckYout Partner API. Newest changes first.
Breaking changes
Breaking changes are announced at least 90 days in advance and ship as a new API version (e.g. /api/v2). Existing versions stay available for the announced window.
v1.0
March 2026First public release of the Partner API.
- +
POST /api/v1/notify— trigger WhatsApp notifications - +Webhook delivery on guest check-out with HMAC-SHA256 signature
- +API key management (create, list, revoke)
- +Event types:
checkout,cleaning.completed
v1.1
April 2026CurrentWebhook reliability and idempotency.
- +
event_id— unique UUID per event for idempotency - +Webhook retry with exponential backoff (3 attempts: immediate, 1 min, 5 min)
- +Rate limiting with
429responses on the Notify API
Questions or feedback? info@checkyout.app