Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (6 optional params, output schema present), the description covers purpose, when to use, key input roles, and effects. The output schema handles return details, so missing return descriptions are fine. This is a complete and well-rounded description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.