Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already flag destructiveHint=true and idempotentHint=false, but the description goes further: it discloses irreversibility, the cascade semantics (linked resume/interview/offer survives with link cleared, radar match deleted and never re-offered), and quota behavior. That is behavioral context an agent cannot get from the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.