List customers for a merchant

Returns a paginated, searchable list of customer records belonging to the given merchant. Env-scoped — sandbox rows never appear in production listings.

curl -X GET "https://example.com/v1/payments/merchants/497f6eca-6276-4993-bfeb-53cbbbba6f08/customers"

{
  "customers": [],
  "total": 0,
  "page": 1,
  "limit": 25,
  "total_pages": 1
}