Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple one-parameter deletion tool with no output schema, the description covers purpose, usage, and pairing. The presence of annotations (destructive, idempotent) fills the safety profile. Minor gap: no mention of return value or error behavior, but that is less critical for this tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.