Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, readOnlyHint=false, and idempotentHint=false, so the safety profile is largely covered. The description adds real value with 'This can modify documents and access capabilities allowed by Affinity settings,' which discloses mutation scope and permission gating. It says nothing about error behavior, sandboxing, or whether repeated execution is safe, which the non-idempotent hint already implies but leaves unexplored.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.