The Lightbulb Framework is build using the cliff command line interface formulation framework. Cliff is a framework for building command line programs. It uses plugins to define sub-commands, output formatters, and other extensions. More information can be found here

In addition to running single commands from the command line, or the interactive mode, users can directly interact with the Cliff API classes and use the lightbulb framework. More details about the Cliff structure can be found here