Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and openWorldHint. The description adds output details (cost impact analysis, eligibility criteria, duration benchmarks) but does not disclose additional behavioral traits like performance, limitations, or the role of the async parameter. With annotations covering safety and idempotency, the description contributes moderate context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.