Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full transparency burden. It only states 'Check the status' without disclosing whether this is a read-only operation, any permission requirements, rate limits, or what side effects (if any) exist. This leaves behavioral traits largely undisclosed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.