Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint: true and readOnlyHint: false, so the description carries a lower burden. It adds context about deleting previously stored memory and clearing sensitive data, but these are use-case clarifications rather than deeper behavioral disclosures (e.g., irreversibility, confirmation steps). No contradiction exists, but the added value is modest.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.