Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states it lists accounts/categories. It doesn't disclose behavioral traits like whether it's read-only, requires authentication, has rate limits, returns paginated results, or what format the output takes. This is inadequate 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.