Single tool 'add' has a basic schema with typed parameters (a, b as numbers) and descriptions, but lacks depth expected for production. Tool description is minimal (11 words, 33 chars), below the 10 - 1024 char guideline sweet spot (194 char baseline). No output schema documented. No error handling guidance. No indication of idempotency, side effects, or when to use this tool vs alternatives. The tool is trivial (arithmetic) but even simple tools need complete, LLM-optimized descriptions. Parameter descriptions are present but terse ('First number to add' is adequate but could explain constraints, valid ranges, or format expectations).

• Expand tool description to 50 - 150 chars. Example: 'Adds two numbers and returns their sum. Use for arithmetic operations. Accepts integers and floats. Returns result as a number.'
• Document output schema explicitly. Example: 'Returns {"result": number, "operation": "add", "inputs": {"a": number, "b": number}}'.
• Add constraint details to parameter descriptions. Example: 'a: First number to add (integer or float, no limit on magnitude)' and 'b: Second number to add (integer or float, no limit on magnitude)'.
• Add error handling guidance. Example: 'If inputs are NaN or Infinity, the tool returns an error. Ensure both inputs are valid numbers before calling.'
• Rename tool to 'add_numbers' for clarity and consistency with verb_noun naming convention (baseline: 90% of A+ tools start with action verb).