Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool's complexity is low (0 params, no annotations, no output schema), which lowers the completeness bar. The description covers the basic purpose adequately. However, since there is no output schema, 'current state' is the agent's only clue about the return value, and it is ambiguous — the agent cannot predict whether it receives item names, statuses, progress percentages, or queue length.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.