Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple, has a clear action and scope, and the annotations cover idempotency, destructiveness, and read-only behavior. Missing context includes what 'off' implies (e.g., ceases running, does not delete data) and any relation to start/restart, but the current description is adequate for a simple stop operation with no output schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.