The BitPay Ruby Client Library allows developers to integrate the BitPay API's methods into their Ruby applications. Quick Start directions are provided under the "Getting Started" link.
Six APIs were added to the directory in Auto, Cryptocurrency, and Recognition categories, among others. Also added were client libraries for use with Intuit QuickBooks Online API.
A look at the cryptocurrency market, with all its hype, failed ICOs, and questionable players, reveals an ecosystem comparable to that of the miners in the 1800s. In such an ecosystem, will a market for businesses providing tools and services (such as APIs) to the blockchain world thrive?