Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It usefully discloses the selection criteria (funded, zero-spend, AI-startable, no known human blockers) and that no website visit is needed, but it omits whether the operation is read-only, authentication requirements, rate limits, and return format.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.