The paysafecard Java Sample Code by paysafecard presents how API interaction can help to integrate payments into applications. In addition to payments, developers can also implement payouts and refunds, by finding requests and responses as available references.
Read-it-later service Instapaper has released what it's calling a "full API." With it, developers using the Instapaper API can create applications that both write to and read from the service. The full API is free to developers, but only paying users can read from their Instapaper account using third-party tools.
Twelve APIs have been added to the ProgrammableWeb directory in categories including Blockchain, Bots, Financial, and Tourism. Highlights include the Finnhub.io API for free data about stocks foreign currency exchange, and cryptocurrency. Here's a rundown of the latest additions.