Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered elsewhere. The description contributes nothing beyond that — no note on whether results are scoped to the required cluster, whether the optional namespace acts as a filter, or what happens if the namespace does not exist. There is no contradiction, just no added value.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.