Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already declare read-only, idempotent, and non-destructive behavior, so the description does not need to restate those. It adds useful context about the data being 'local hash-linked' and 'paper data only', but the meaning of 'paper data' is unclear, and it does not disclose anything about verification semantics or output behavior. 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.