Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It reveals only the action ('recompute and verify') but not whether the operation mutates state, what side effects might occur, how expensive it might be, or what failure behavior looks like. This is a significant gap for a tool that likely performs a substantial computation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.