I'm currently in the process of submitting a project to an open source foundation, and one of their requirements is to show the build status in the README of the repository. This is so that when users visit the open source page on GitHub, they can assess whether or not the project is stable / usable. Build systems such as Travis CI have image URLs that can indicate the build state of a project. See https://docs.travis-ci.com/user/status-images/ for what this looks like.
Since I'm using Harbormaster, I need a URL that when requested will show the build status as an image (ideally for a branch on a repository).