Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. 'Retrieves' implies a read-only operation, but the description doesn't specify whether this requires authentication, what format the transports are returned in, whether there are rate limits, or if there are side effects. For a tool with no annotation coverage, this minimal description leaves significant behavioral questions unanswered.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.