Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It implies a read-only operation via 'View' but does not describe the return format, error handling, or any side effects. 'Requires API key' is a prerequisite already present in the schema, adding no new transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.