Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses that the tool solos an executor with blackout on others and explains three modes (swop, swop_on, swop_go). However, it lacks details on permissions, side effects, or what happens to state, leaving some behavioral uncertainty.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.