Unity CLI


Unity TCP CLI communication for debugging

About This Plugin

Making debugging menu is always tedious. It’s also too complex to present every debugging UIs for all the features. With UnityCLI, you can send commands any debugging logics to the target device without UI.


This plugin is implemented by using .Net’s System.Net, so it’s platform-independent. You can send commands from PC to mobile device. If you have TCP terminal on your mobile device, then it’s also possible to send commands from that device.

How To Use

  1. Copy bin/UnityCLI.dll to your project.

  2. To open communication, call CLI.Bridge.TryInstall.


This will create singleton, which opens TCP connection at {SOME_PORT}. If you want to communicate upon more than one port, just attach CLI.Bridge MonoBehaviour on any of your GameObject.

  1. Bind your own CLI logic to CLI.Bridge like below.
void BindExecuteCmd()
  var inst = CLI.Bridge.Instance;
  inst.ExecuteCmd = ExecuteCmd;

CLI.Result ExecuteCmd(CLI.Command cmd)
  switch (cmd.Exe)
    case "realtimeSinceStartup":
      return CLI.Result.Success("now: " + Time.realtimeSinceStartup);
    case "timescale":
      var newTimescale = float.Parse(cmd.Args[0]);
      Time.timeScale = newTimescale;
      return CLI.Result.Success("set timescale: " + newTimescale);
      return CLI.Result.InvalidCmd(cmd);
  1. Build and play your game on target device.

  2. To make connection from PC (OSX) to target device, you can use any TCP connection tools.

If you are on OSX, then this can be easily done with nc. Open your terminal and enter below.


Make sure that PC and target device are reachable each other. To check reachable, on terminal, enter ping {TARGET_DEVICE_IP}.


To build DLL, enter make on your terminal. The output DLL will be placed in bin/UnityCLI.dll