Please sign up here for the Booking API to get started. Once you’ve signed up and confirmed your email address, you’ll be able to access the Dashboard as seen below where you can create both sandbox and production API keys. Please see the FAQs for the API and the Dashboard:
Once you create a Sandbox API key, we recommend you follow the steps on the API documentation here which provides a step-by-step guide on how to create a booking. You’ll be able to quickly learn how our Booking API works.
We also have a recorded tutorial that can prove helpful: