Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity, the presence of an output schema, clear annotations, and full parameter coverage, the description is sufficiently complete. It tells the agent what data will be returned, the authentication requirement, and the tool's read-only nature, so no critical context is missing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.