Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple two-parameter destructive tool, the description is minimally viable, especially with an output schema and destructiveHint annotation available. However, it lacks edge-case guidance such as whether the last owner can be removed, whether deletion is permanent, or what happens when the email does not match a member.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.