Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the full burden of behavioral disclosure. It only states the basic read operation without describing any limitations, prerequisites, potential errors, or response format (though an output schema exists). It does not disclose whether the tool returns full chart objects, pagination behavior, or how 'belong to a dashboard' is defined, leaving significant behavioral ambiguity.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.