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. 'Inspect' implies a read-only operation, but it does not disclose what happens if the id is not found, whether it returns a full match or a summary, or any other behavioral traits. Minimal disclosure beyond the verb itself.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.