Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has only 1 parameter, no output schema, and no annotations, the description is moderately complete. It defines the purpose and the parameter, and implies an active chat context. However, it lacks explicit information about expected behavior after sending, potential errors, or prerequisites beyond the implied 'whitelisted owner,' leaving some gaps for an agent to infer.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.