Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description adds significant behavioral context beyond annotations: submission to Meta, approval requirement, allowance consumption, and scope (text only, buttons added elsewhere). Annotations are neutral (not read-only, not destructive), and description complements them without contradiction.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.