The PaySimple Ruby SDK by Constantine allows API interaction with the aim to integrate payments into applications. Usage examples include customer, credit card, ACH, payment, recurring payment, and payment plan.
SumUp, a mobile payments rising star, recently announced an API that allows third party apps to accept credit card and cash payments without leaving the app. Prior to the API, SumUp users and customers were required to use the SumUp app in isolation from the merchant app to utilize the slick mobile payments platform.
Google recently improved its collection Android Pay APIs in a bid to boost adoption. Importantly, the APIs are now easier than ever to integrate into web sites and apps. Google says a few lines of code can add Android Pay as an option during checkout, giving consumers another avenue for paying.
Visa has opened up its global payments network to developers releasing a set of new RESTful APIs and developer website. Developers will have access to different Visa platform capabilities via RESTful APIs including payments, analytics, alerts, ATM locations, geographical-based data, and more.