Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description must disclose behavioral traits, but it only mentions that the tool reads data. It does not confirm safe/read-only behavior, idempotency, or any side effects. The term 'read' weakly implies non-destructiveness, but lacks explicit authorization or error-context disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.