Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructive=true, idempotent=true, readOnly=false, but the description adds real substance beyond them: the effect on organisation-wide context and existing competitor monitoring, the explicit non-effect on scheduling, concurrency ('multiple strategies may be published simultaneously'), and the rights requirement.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.