Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds real value by naming exactly what gets recomputed (hash, notary payload, invariants, pack currency), telling the agent this is a consistency check rather than a simple read. It does not say whether failures throw or are reported, but the output schema covers the return contract.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.