Use this method to retrieve information about the availability of a specific service or a group service (ie course, workshop, event)

For online bookable timeslots for services or group-service use the endpoint GET booker-services/availabilities Response parameters:

• keys 'data.calendarBegin' and 'data.calendarEnd' - this is the allowed period for the availability algorithm. Can be adjusted in the web app under the section 'Booking setup'
• key 'data.onDays' - array of dates with available time slots
• key 'data.offDays' - array of dates that are fully booked
• key 'data.slots.times' - array of times that are available for appointments ​​​​​​​If besides knowing the days with free slots (onDays) and those without any (offDays), you want to have a list of free slots for very specific days, you can use the parameter days[] and you will have the list in the response field slots