Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotation readOnlyHint: true already signals a safe read operation. The description merely repeats the resource ('kernel parameter settings') without adding behavioral details such as scope, sample output, or any special conditions. It adds no transparency beyond the annotation, except reinforcing that it is a getter.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.