I think you’re having this issue.
My reply there has the fix up front and then an explanation of what’s going on.
Good news, I already PR’ed a fix for this and it’s been merged into main: Add additional logic to entrypoint to handle more subcommands. by omkensey · Pull Request #1350 · hashicorp/boundary · GitHub So this is just a temporary breakage and once that PR is merged it should work the way you expect again.