Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description covers the essence: what is deleted, what remains, and the irreversible nature. With an output schema available, it does not need to detail return values. It lacks mention of errors or edge cases, but given the tool's simplicity, it is sufficiently complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.