Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple, zero-parameter, destructive tool, the description is sufficiently complete. It explains what the tool does and the main side effect, and there is no output schema or nested objects to further document. The description fully covers the necessary context for an agent to decide and invoke correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.