Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no parameters, no output schema, and no annotations, the description is the only source of behavioral information, and it omits when to call it, what state change occurs, and what the caller should expect afterward. It is insufficient for a lifecycle tool sitting beside health_check and reload.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.