Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false, destructiveHint=false, openWorldHint=true, idempotentHint=false, so the safety profile is covered. The description adds nothing beyond a vague 'viewed or edited' phrase that mildly suggests read behavior on an annotated write endpoint, and never explains what gets created or what permission it needs.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.