Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered. The description adds genuine behavioral context beyond that: the return shape varies per client, Grok Bot returns a chat message rather than a config, and the result may include a file path and one-click deeplink.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.