Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. 'List all gift cards' implies a read-only operation but doesn't specify authentication requirements, rate limits, pagination behavior (despite pagination parameters in schema), error conditions, or what 'all' means in practice (e.g., all in a store, all active, etc.). The description is too minimal for a tool that likely interacts with sensitive financial data.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.