Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple two-parameter tool with a complete schema, annotations, and an output schema, the description is minimally adequate. But it does not explain that the automation must already be paused, what resuming it does, or what side effects may occur, leaving an agent with incomplete information for judging consequences.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.