Search for customers you’ve previously created using Stripe’s Search Query Language. Don’t use search in read-after-write flows where strict consistency is necessary.
https://docs.stripe.com/search#search-query-language
Functions
Stripe: List All Customers
Returns a list of your customers. The customers are returned sorted by creation date, with the most recent customers appearing first.
Stripe: Retrieve a Customer
Retrieves a Customer object.
Stripe: Create or Update a Customer
Create or Update a Customer in Stripe.
Stripe: Retrieve a Checkout Session
Retrieves a Checkout Session object.