Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, so safety is well covered. The description adds valuable context about the default instance (public.opendatasoft.com) and the returned fields, which goes beyond the schema. It doesn't mention rate limits or pagination behavior, but given the strong annotations, this is adequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.