The PaySimple Go SDK by Aaron O. Ellis allows to interact with API data to integrate payments and billing features into applications. Available tests to work with account, authorization, customer, and payment.
Payment Savvy, payment processor known for its no-cost-to-biller model, launched an Open API. The API integrates with many software packages across industries. Payment Savvy finds the API strategy will complement its convenience fee model which makes makes doing business with Payment Savvy easy.
To help developers increase the security of their apps, PayPal has updated its developer portal to include a self-service credential provisioning feature that allows developers to generate their own client-secret pairs, which developers use to authenticate their apps with the PayPal API.