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, clear annotations), the description is reasonably complete. It explains what is returned (definition and metadata) and the parameter is fully documented. However, it could be slightly more descriptive about what 'definition and metadata' encompasses, such as whether it includes fields, permissions, or usage statistics. This would aid the agent in setting expectations, but the current text is sufficient for a basic get operation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.