Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds genuine context with 'backend-owned', signaling the stage is server-computed and not client-writable, but says nothing about return format, volatility, or auth expectations. Moderate added value against an already-documented safety profile.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.