The Marqeta Python SDK currently in beta provides access to the Marqeta Core API from a Python application. The Python SDK is built on top of the Core API, providing wrappers for the REST API endpoints.
Google has introduced a one-click payment experience via a new Payment Request API. The API eliminates the need for a traditional checkout experience by handling the payment experience through a simple API call. The service is not a payment method, nor does it integrate with payment processors.
Smart2Pay is known as a hub for alternative payment solution providers. Its API offers access to main payment processors that aren't typically top of mind for merchants. Now, the company has launched a Mobile SDK that allows app developers to easily accept payment through WeChat and Alipay.