Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a zero-parameter, read-only status tool with no output schema, the description is sufficiently complete. It tells the agent what resource is inspected and that recent activity is included. However, it leaves vague what 'status' encompasses (e.g., booleans, counts, timestamps), so it is not perfect.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.