Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a destructive, non-idempotent bulk delete with no output schema, the description covers the key side effect and reversibility, which is the most important part. It omits what the caller passes (IDs), whether links to the zones are affected, and whether the operation can partially fail.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.