Single tool 'add' has a basic schema with typed parameters (a, b as numbers) and descriptions, but falls short of production quality. No output schema documented. No error handling guidance. No parameter constraints (min/max for numbers). Tool is trivial (arithmetic) and lacks real-world complexity, but the definition gaps are structural: missing output schema documentation, no guidance on error cases, no idempotency statement. Naming is acceptable (verb_noun form), but the overall definition lacks depth expected for agent-facing tools.

• Expand tool description to 50 - 200 characters. Example: 'Adds two numbers together and returns the sum. Accepts integers and floats. Use for arithmetic calculations in multi-step workflows.'
• Document output schema explicitly in tool metadata. Declare: {type: 'object', properties: {result: {type: 'number', description: 'The sum of a and b'}}}
• Add min/max constraints to numeric parameters. Example: {a: {type: 'number', minimum: -1e10, maximum: 1e10, description: 'First number to add (range: -1e10 to 1e10)'}
• Add error handling documentation. Example: 'Returns error if inputs are NaN or Infinity. Precision limited to IEEE 754 double precision.'
• Consider adding a 'precision' or 'round_to' optional parameter if decimal handling is important, with clear documentation of rounding behavior.