Single tool 'add' has a clear verb-noun name and basic schema with typed parameters. However, the description is minimal (22 chars) and lacks context about when/why to use it. Parameters 'a' and 'b' have type annotations but descriptions are generic ('First number to add'). No output schema is documented. No error handling guidance. The tool is trivial (arithmetic) but the definition pattern is weak for production use.

• Expand tool description to 50 - 150 chars: 'Adds two numbers together and returns the sum. Accepts integers and decimals. Use for arithmetic calculations in workflows.'
• Document output schema explicitly: { type: 'object', properties: { result: { type: 'number', description: 'The sum of a and b' } } }
• Add numeric constraints to parameters: 'a: number (range: -1e10 to 1e10, decimals allowed)' and 'b: number (range: -1e10 to 1e10, decimals allowed)'
• Add error handling: 'Returns error if inputs are non-numeric, null, or produce infinity/NaN. LLM should validate inputs before calling.'
• Consider adding a 'precision' parameter (optional, default 2) to control decimal places in the result, making the tool more flexible.