Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, readOnlyHint=false and openWorldHint=false, so the description's job is to add detail, and it does say what is affected: expired/dead leases are stopped and squatters are reclaimed. The gap is the undefined 'strict' mode — the description implies two behavioral regimes without saying how either is selected, which matters for a destructive tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.