mas-runtime

mas-runtime is the embeddable Mealy kernel. It has no session CLI.

The mas-runtime console script is a leftover entry point. It prints a pointer and exits 2:

The mas-runtime CLI was removed. Use mas-ctl instead:
  mas-ctl chat <manifest> -q "..."
  mas-ctl validate <manifest>
Library API: mas.runtime + mas.ctl.session.bootstrap

You want	Use
Chat, validate, compile, run a MAS	mas-ctl
Benchmarks, telemetry, plots, controller	mas-lab
Embed the kernel in Python	import mas.runtime and mas.ctl.session.bootstrap

Package map: Packages. Contributor docs stay in the source tree under runtime/docs/ and are indexed from Runtime package docs.