Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given this is a simple fetch-by-ID tool with only one required parameter, an output schema, and helpful annotations, the description is complete. It covers scope, identifier provenance, response contents, and the non-return of sensitive fields, so nothing essential is missing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.