Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and no destructive hint. The description adds 'list of indexed OSTC state entries,' which provides some context beyond annotations but does not disclose pagination details or result ordering. With comprehensive annotations, this is adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.