Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple one-parameter destructive tool with annotations covering safety, the description covers purpose, usage, and tool relationships. It does not specify the return value, but there is no output schema, and a minimal return indication (e.g., success/failure) is not stated, which is a minor gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.