This is the dev documentation for an unreleased version of MPF!

This is the documentation for MPF 0.52+, which is the “dev” (next) release of MPF that is a work-in-progress. Unless you’re specifically looking for this version, you probably want to use the version of documentation called “latest” which is for the latest released version of MPF. That documentation is at docs.missionpinball.org/en/latest.


There are several tools which have been created to help you build your game in MPF.

MPF Monitor

The MPF Monitor is a graphical utility you can use to interact with a running instance of MPF. See lights change in action, click to control switches, and lay out everything on an image of your playfield.

“Interactive” MC (or “iMC”)

The interactive MC lets you create YAML configurations for slides and widgets in realtime and see them on a display. This is great for fine tuning and tweaking your slides.

Service Cli

The MPF service cli is a fast way to debug or troubleshoot your machine during development and operation.

Machine Fuzzer

Fuzz your machine using afl to find crashes in MPF, your config or your code. Currently not documented. Let us know if you want to use it.

Hardware Debugger

The hardware debugger allows you to scan all your configured hardware platforms. In some cases it also supports firmware updates and configuration settings. See mpf hardware for details.

Future Tools

  • GUI config builder
  • Music builder / looper / manager
  • Show builder
  • Slide / animation tool
  • Auto machine documentation builder
  • Device / asset explorer (Why did this sound stop? Why is this LED red? etc)