Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the 3-parameter schema, output schema, and annotations, the description is complete enough for an agent to invoke it correctly. It covers parameter intent, ordering, side-effect boundaries, safety, and even foreshadows the normalized snapshot and checksum return without duplicating the output schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.