The Venmo API is made up of two different public APIs. "The Payment Links API provides a simple method for sending invoices or suggested payments via any medium (Email, SMS, Facebook, Twitter). Payment links have 3 optional parameters and are constructed by adding these parameters to the base URL. The Receipts API allows every Venmo user to send receipt data for payments they receive to a third party webservice. By default, users get receipts via Email and SMS, but the Receipts API provides a simple method for automating followup actions to payments (like collecting a postal address for fulfillment or automating digital fulfillment via email)."
Because of its default settings, digital payments service Venmo exposes many of its users' transactions to the world through its public API. Using the API, researcher created a website, Public by Default, that visually details the implications of Venmo's public by default approach.
Mobile payment service Venmo, which is owned and operated by PayPal, abruptly shut off new developers from its public API, which handles payment invoices and distribution of receipts to external web services. Venmo had created confusion after first stating that it was shuttering its API altogether.
College hackathons have proliferated on the northeast over the past two years, from HackNY to Startup Weekend Princeton, to PennApps, which the Dining Philosophers hold at the University of Pennsylvania on a weekend early in each semester.
This year theme was simplicity; taking a complicated app and making it easier. Of the 42 demos presented Sunday afternoon (livestream archive here), here are some of the coolest hacks that took full advantage of available APIs.