December 2022

Added support for a dedicated cancelUrl in the Payments API and Orders API. The consumer will be sent to this URL if they cancel a payment or order. If the cancelUrl is not provided, the consumer will be sent to the redirectUrlas was already the case.
Added support for Idempotency-Key headers in the Mollie API, making API requests repeatable and idempotent within a specific timeframe. See API idempotency.