Hello, I want to know if there is an API for Customers (not the Seller) to login to Square Appointments to view their accounts and book appointments? I know they can go to the Seller’s Website where they can “Sign In” through a phone number verification code, and once the code is entered, they can see their account information and book an appointment for a service. I was wondering if there is something similar in creating an iOS app where the customer can Sign In with a verification code, see their account information and have the ability to book appointments, see past and upcoming appointments, update their card on file information, etc,.? Hope this makes sense.
Currently, there isn’t a way to query for all the bookings for a given customer. You’d have to call ListBookings and parse the results for the customer_id that you want all the bookings for. We’re constantly working to improve our features based on feedback like this, so I’ll be sure to share your request to the API product team. 
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