MeshCat LCM Display Server (MeLDiS)

A standalone program that can display Drake visualizations in MeshCat by listening for LCM messages that are broadcast by the simulation.

From a Drake source build, run this as:

bazel run //tools:meldis &

From a Drake binary release (including pip releases), run this as:

python3 -m pydrake.visualization.meldis

For binary releases (except for pip) there is also a shortcut available as:


In many cases, passing -w (i.e., --open-window) to the program will be convenient:

bazel run //tools:meldis -- -w &