I have a custom-built booking system. Can I still join?

Yes! OPDS is designed to be highly flexible. If your custom system can export in iCal format or provides a JSON API, you can use OPDS.

If you have an iCal URL (provided by many calendar-based systems like Google Calendar or specialized sports software), you can simply paste the URL into your "Booking Integration" panel, and we will sync the events as unavailable slots.

If you are a developer or have a tech team, you can implement the OPDS specification directly in your API. Visit /opds to see the technical JSON schema.