Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of disclosing behavior. It only states 'Analyze account balances', which gives no information about side effects (e.g., read-only), permissions, whether it aggregates data, returns a report, or has any side effects. This is a complete lack of behavioral disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.