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. It states the action ('List') but lacks details on what 'available' means (e.g., permissions, filtering criteria), how results are returned (e.g., format, pagination), or any constraints (e.g., rate limits, authentication needs). This leaves significant gaps for a tool with zero annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.