Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, readOnlyHint=false, and openWorldHint=false. The description adds valuable context: 'No Meta write' (clarifies local-only discard despite destructive hint) and that the exact pd_confirm_* token from prepare is required. It doesn't state what happens to the draft afterward or whether it can be recovered, but the safety profile is largely covered by annotations plus the added context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.