Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure, but it only offers a high-level action. It does not explain what 'load' means in practice, whether any state changes occur, error handling, supported PDF formats, or the return behavior. This is a significant gap for a tool that likely has side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.