Moonraker is a Python 3 based web server that exposes APIs with which client applications may use to interact with Klipper. Communcation between the Klippy host and Moonraker is done over a Unix Domain Socket. Tornado is used to provide Moonraker's server functionality.
Note that Moonraker does not come bundled with a client, you will need to install one. The following web clients are currently available: