Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and openWorldHint. The description adds context about data sources (SEC, Equilar, Bloomberg) and output structure (metrics with attribution and confidence scores), which is useful but does not disclose potential delays or rate limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.