Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the simplicity (no params, no output schema, no annotations), the description is minimally adequate. However, it lacks details about return value format, potential errors, or idempotency, which would be helpful for an agent. It is not incomplete but could be richer.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.