Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the full behavioral burden. 'Get complete project details' implies a read operation, but it does not disclose side-effect-freeness, authorization requirements, potential errors, or what 'complete' entails. This is thin for a tool with no annotation safety signals.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.