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, so the mutation profile is covered structurally. The description adds nothing on top: no mention of required permissions, what a study object must contain, whether creation triggers simulation runs, or what is returned. With annotations carrying the full safety load, the description still earns only a 2 because it contributes zero behavioural context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.