Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the annotations (destructiveHint, idempotentHint), the description discloses a major side effect: the last member removing themselves deletes the entire team. It also spells out the two guard errors (TEAM_OWNS_WORKSPACES, TEAM_HAS_PLAN) that block that cascade, which the annotations cannot convey.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.