Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered without description help. The description adds that the default subject is the node's own account and enumerates the verdict payload (reasons, restrictions, bindings and states), but says nothing about where the verdict comes from, whether results are cached or can change over time, or any auth requirements — relevant given openWorldHint implies external data.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.