Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's low complexity (3 params, output schema present), the description covers the essential aspects: action, return value, sibling, and constraints. It does not explain the self-tipping requirements in detail, but the context is sufficient for an agent to use the tool appropriately.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.