Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple read-only list operation with one optional parameter and no output schema, the description is adequate: it communicates the operation, the resource, and the filter. It does not detail pagination, ordering, or response details, but these are less critical for a straightforward list tool and no output schema is present to contradict.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.