Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits itself. It only says 'Generate conversion recommendations,' giving no indication of side effects, dependencies on prior analyses, data flow, or whether it is a read-only operation. This is insufficient for the agent to predict the tool's behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.