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. It only says 'associate', implying a mutation, but does not explain whether the operation is additive, reversible, requires permissions, or produces any output. This is insufficient for a tool that modifies relationships.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.