From the readme:
A rich framework for building restful API services. hapi is a configuration-centric framework in which authentication requirements, input validation, data caching and pre-fetching, developer documentation, and other essential facilities are provided out-of-the-box and enabled using simple JSON configuration objects. hapi enables developers to focus on writing reusable business logic instead of spending time with everything else.
We'll also discuss security topics in node.js, and in our "api a meeting" series we'll be discussing APIs that we just can't stand.