Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral disclosure burden. 'Advisory only' is a meaningful, explicit disclosure that the tool does not execute trades, and the broker-following sentence reveals how behavior adapts per broker. The term 'Pro gates + structure' is jargon-y and not fully unpacked, which keeps this from a 5.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.