Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety behavior is covered. The description adds useful context beyond this by listing the possible status values (Processing, Ready, Empty, Ineligible, Pending), explaining the polling loop expectation, and documenting auth/session options.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.