Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses key behavioral traits: it only suggests plans and does not independently execute or delegate, and it provides an expected runtime of ~30s. It does not mention whether it has side effects, requires permissions, or whether outputs are deterministic, but the output schema partially addresses return structure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.