Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple zero-parameter listing tool, the description covers the operation and output fields. However, the sibling set includes login and site-selection tools, suggesting session context may be a prerequisite, and the description does not mention authentication, scope, or ordering, which leaves a minor completeness gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.