Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the burden of behavioral disclosure. It adds a useful caveat that sensitive fields (username, serial, address, file info) are not returned, providing some transparency about data scope. However, it does not explicitly state that the operation is read-only, require permissions, or mention potential errors or rate limits. The 'query' verb implies read-only but doesn't make it explicit.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.