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 an authentication requirement ('Requires deals:read scope') and enumerates the possible statuses ('sourcing/contacted/negotiating/agreed/no_contact/declined'), which helps set expectations about the response content. However, it does not mention pagination, default behavior when parameters are omitted, or explicitly confirm read-only behavior, though 'List' implies non-mutating.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.