Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false and openWorldHint=true, but the description adds no behavioral context beyond them. It never says what a 'batch action' mutates, whether it is atomic or partial on failure, what permissions are required, or what the response contains — the main things an agent cannot infer from the hints for a bulk mutation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.