Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses the output format (score and 10 article statuses) which is helpful, but it does not detail side effects, data dependencies, or whether a token_symbol or entity_id is required. The behavior is clearly a read-only assessment but lacks depth.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.