Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (one parameter, no output schema, no nested objects), the description is reasonably complete. It covers what the tool does, the input constraint, the underlying endpoint, and the access tier. What's missing is a description of the return format, but since no output schema is provided and this is a straightforward get-by-ID operation, the absence is acceptable. It could benefit from a note about what 'full flag-label records' contain, but overall it provides enough context for an agent to use the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.