Single tool 'get_time' has a clear, concise description (67 chars) and properly typed input schema with required field. However, the schema is minimal (only 1 parameter), and critically, there is NO documented output schema, LLMs cannot predict what fields to expect in the response. The tool lacks error handling guidance, parameter constraints (e.g., max label length), and any indication of idempotency or side effects. The description does not explain WHEN to use this tool or what the return format is. This is a toy/test server (mockServer.ts in test/) rather than a production tool, which explains the minimal implementation.

• Document the output schema explicitly. E.g., 'Returns: { content: [{ type: "text", text: string }] }' or specify the exact format of the timestamp string.
• Expand the tool description to 50 - 150 characters explaining purpose: 'Returns the current UTC time as an ISO 8601 string, echoing the provided label for request tracking.'
• Add constraints to the 'label' parameter: maxLength, pattern, or description like 'A short identifier (1 - 50 chars) for request tracking.'
• Add error handling guidance: 'If the system clock is unavailable, returns isError: true with a recovery message.'
• Move tool definition from test/mockServer.ts to a production server implementation (e.g., apps/prober/src/server.ts) with proper initialization and transport setup.