Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide read-only, idempotent, non-destructive, and open-world hints. The description adds the identifier types (full or three-digit sequence), which is more about parameter semantics than behavioral disclosure. No contradictions, but little additional behavioral context beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.