Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple delete operation with one parameter, an output schema, and strong annotations, the description is complete enough. It states the critical precondition, which is the main contextual risk. A slightly fuller note on consequences of the preconditions would be ideal, but the current level is sufficient.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.