Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It adds one concrete behavioral claim — 'No identifiers are retained' — which signals a stateless, privacy-preserving operation, and 'Show' implies read-only. However, it never states whether the tool makes external calls, how it handles invalid input, or what side effects (if any) exist, leaving significant behavioral uncertainty.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.