Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the behavioral transparency burden. 'Get' clearly indicates a read operation, and the possible return values are disclosed, but there is no explicit statement about side effects, error behavior, or assumptions like input_path needing to exist.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.