Atlassian-Connect-Express-hipchat (ACE) is a NPM module to help developers build HipChat add-ons using HipChat Connect. Building a HipChat add-on with ACE is relatively simple, as it generates most of the plumbing for you, using Node.js and Express as the add-on server.
Express by itself is a web app framework for Node. atlassian-connect-express-hipchat just provides a library of middleware and convenience helpers that make it easier to build HipChat add-ons.
The following tutorial explains what you need to do to build a HipChat Connect add-on using ACE: Getting started with atlassian-connect-express
You can get help by emailing firstname.lastname@example.org or report bugs. If you want to learn more about HipChat Connect, you can visit https://developer.atlassian.com/hipchat/getting-started.
Even though this is just an exploratory project at this point, it's also open source Apache 2.0. So, please feel free to fork and send us pull requests.