The Booking API is used primarily for MyTime customer’s user operations (creating, updating, and deleting users), appointment operations (creating, updating, and canceling client appointments), and managing services purchased upon booking. The Booking API operations take place through MyTime’s booking widget on the customer’s website, or through a custom app making use of the Booking API.
Booking API Guide - https://www.mytime.com/api/mkp/v1/docs#/