Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description discloses that the function runs on every request, supports webhooks and crons, and requires a Developer plan. Annotations only provide idempotentHint; the description adds value but lacks details on conflict behavior (e.g., overwriting existing functions) or any side effects beyond deployment.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.