Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It does useful work by disclosing the identity scoping ('the person this TeamMeet connector belongs to') and the ordering behavior ('Open ones first'), which implies a read operation. But it never confirms read-only status, says nothing about result volume, pagination, or whether the default set excludes finished items — the last point is left to the schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.