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. 'set track property' implies a mutation/write operation, but it doesn't disclose whether this requires specific permissions, what happens if invalid properties are provided, whether changes are reversible, or any rate limits. The description fails to provide the behavioral context needed for safe and effective tool invocation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.