Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description describes the tool as validating and converting addresses, which is inherently a read-only, non-destructive operation. However, the annotations declare destructiveHint: true, implying potential harmful side effects. This creates a direct contradiction between the description and the metadata, as the description gives no indication of destructive behavior and the operation described cannot plausibly be destructive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.