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 tool exchanges a code for tokens, implying a write operation that modifies authentication state, but lacks details on permissions, side effects (e.g., token expiration), error handling, or response format. This is a significant gap for a security-sensitive OAuth tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.