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. 'Delete a brand' implies a destructive, irreversible mutation, but it doesn't specify permissions required, side effects (e.g., impact on associated products), error conditions, or response format. This is inadequate for a destructive operation 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.