Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (10 parameters, mutation, validation, security scanning, version history), the description covers the essential process: validation calls, security scan, score, storage, and authentication. An output schema exists, so return values need not be described. Minimal gaps: it doesn't clarify whether this creates a new entry or updates an existing one, and it lacks specifics about authentication requirements.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.