Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description bears the full burden of behavioral disclosure. It only states 'Get a wiki page,' implying a read operation, but does not describe the return format, potential errors, authorization needs, or any other behavioral traits. This is minimal transparency even for a simple getter.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.