Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint, so the safety profile is covered. The description adds registry-scope context (INPI / SIRENE), but does not disclose additional behavioral aspects such as caching, freshness behavior, latency, or return characteristics; those are largely delegated to parameter descriptions and the output schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.