Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and idempotentHint, covering the safety profile. The description adds the date-range and invoice-type context, but its claim of filters for chave, número, and status conflicts with the schema and is a misleading disclosure; it also omits pagination/limit behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.