Deluan Quintão is an xbar plugin contributor.
This plugin reuses Checkman's configurations and plugins, so you don't need to install it :) It has checks for: HTTP, GoCD, Concourse, Jenkins, Travis, Semaphore, Codeship, CircleCI, Airbrake, GitHub, Pivotal Tracker, TDDium and SnapCI, and you can even create your own plugins to leverage Checkman's streamlined UI and configuration files. More info: https://gist.github.com/deluan/3f6fa6bcff2a355ae89181bb15590b88#file-readme-md
Currently this plugin displays Heroku service status and open issues