Request has launched a beta version of its Request API. The blockchain-based payment solution provider is providing access to both create and read electronic invoices stored on the Request Network through an API. Accordingly, developers can access the Request Network without blockchain experience.
Our API directory now includes 35 invoicing APIs. The newest is the CashFlows API. The most popular, in terms of mashups, is the PayPal API. We list 33 PayPal mashups. Below you'll find some more stats from the directory, including the entire list of invoicing APIs.