Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (security nuances, heartbeat-derived wait time, conditional result set), the description covers all essential aspects: purpose, authorization requirements, rate limits, ownership behavior, return fields, heartbeat staleness, conditional results when completed, and row shape consistency with sibling tools. It is sufficiently complete for an agent to invoke and interpret results correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.