robotctl health

robotctl health
robotctl health --json

Hardware and software in one report. That is deliberate: health is one question, so it is one command, rather than making you poll seven daemons.

It gates a script directly

Non-zero exit when the robot is unhealthy or unreachable:

robotctl health && ./my-experiment.sh

A trade-off worth understanding

A hot motor or a pinned component is reported, but does not affect the exit code.

The official wording is “reported, not judged” — those are information, not a verdict. A servo running warm does not mean the robot is unusable, so it should not stop a script.

The units block

On a dev board this is the most valuable part: one line per daemon naming the release its process was launched from, with a warning when that disagrees with what is installed.

build unknown (old) means that daemon predates the release which taught it to answer — restart it and it will.