Single tool 'add' has a clear verb-noun name and basic schema with typed parameters. However, the description is extremely minimal (23 chars), barely meeting the 10-char floor but well below the 194-char baseline for production tools. Parameter descriptions are present but terse (12-13 chars each). No output schema is documented, the response structure is inferred from code but not declared in tool metadata. No error handling guidance, no idempotency hints, no composition context. The tool is trivial (arithmetic) and lacks the depth expected of production-grade definitions.

• Expand tool description to 100 - 200 chars: 'Adds two numbers and returns the sum. Use this for arithmetic operations. Returns a text response with the numeric result.'
• Document the output schema explicitly in tool metadata or comments: 'Returns {content: [{type: "text", text: string}]} where text is the sum as a string.'
• Enhance parameter descriptions: 'a: A numeric value (integer or float). b: A numeric value (integer or float). Both must be finite numbers; NaN and Infinity are rejected.'
• Add error handling guidance: 'If inputs are non-numeric or infinite, the tool returns an error. Ensure both parameters are valid numbers before calling.'
• Consider adding a 'precision' or 'round_to' optional parameter if floating-point rounding is a concern, with clear documentation of default behavior.