The Google Cloud Billing Ruby SDK by Google communicates with the API to integrate billing services. Developers can install client to get started following a guide. More at https://developers.google.com/api-client-library/ruby/start/get_started
At first, the phrase "my API is my Product" seems misleading. An API is a way to deliver a product, rather than the product itself, right? The term designates a "set of programming instructions designed to access an app." Period. We're talking about a means, rather than an end. That's why there are so many different products relying on APIs: Twilio for phone, Mailjet for email, Google Maps for maps, etc.
Today, Dwolla released a new dashboard for White Label partners to manage customers, view transaction details, and discover business trends. All information within this interface leverages the Dwolla White Label API powering the partner’s ACH transfer integration, but provides the data in a way