The Customer APIs allow you to edit customers in the database, add new customer data, and quickly view specific data for each customer. Additionally, the Customer API allows you to edit the billing and shipping addresses as well as the customer's tax information. There are currently three types of Customer APIs:
1. The Customer Main API is used to add new customers or edit a customer's personal information, and the Get function can be used to view customer information.
2. The Customer Address API is used to add or modify shipping and billing addresses for customers. The Get function is used to view addresses for a customer, and the Delete function is used to remove addresses from a customer's information.
3. The Customer Tax API is used to add or edit tax information for customers. The Get function for the Tax API is used to view the tax information for a customer, and the Delete function is used to remove tax information from a customer's record.