Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already establish that this is a safe, read-only, idempotent operation, so the description's main added value is noting that the result includes the draft, missing fields, and the signed filing. It does not discuss authentication sensitivity, token secrecy, rate limits, or response structure, but it does add some return-context beyond the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.