This C# sample code walks you through the basics for making a successful API call and passing through the authentication steps. It is used for two way (Mutual) SSL and for API Key - Shared Secret (X-Pay-Token). The repository of code snippets for the Visa Developer Program can be used with various Visa API's including; CyberSource Payments, Visa Direct, Visa Checkout, Mobile Location Confirmation, Visa Transaction Alerts and more. The Visa Developer Program opens new opportunities with direct access to Visa’s APIs, developer tools and expertise.
The app55 API lets online and bricks and mortar merchants in the UK take payments from customers on any device, on websites designed and controlled by the retailer. app55 joins 362 payment APIs in our directory. In addition to offering one click, being fully brandable (meaning the customer sees your site only, and is not aware of app55's role), all of the stiff PCI compliance issues that make handling these transactions so complex is outsourced through them.
The Depository Trust & Clearing Corporation, a post-trade financial services company providing clearing and settlement services, has launched an API marketplace. The marketplace will provide DTCC customers and partners with a single location for APIs developed by DTCC for its various services.