Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With an output schema, detailed parameter descriptions, and annotations, the tool is well documented. The description covers core behavior, concurrency, and return counts; only minor details like what 'preserved thread anchors' entail are left implicit, but overall it is complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.