Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits. It states the core action ('resolve') and the output ('ID'), which implies a read-only lookup, but it does not explicitly confirm the absence of side effects, authentication requirements, or error behavior. The description adds some value but leaves gaps in transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.