Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of disclosing behavioral traits. It only states 'Creates a new workspace' without revealing side effects, idempotency, error conditions (e.g., duplicate slug), or whether it overrides existing resources. Critical safety information is missing.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.