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 does one thing but lacks depth expected for agent-ready tools. Naming is acceptable but generic.

• Expand tool description to 50 - 150 characters explaining WHAT it does, WHEN to use it, and WHAT it returns. Example: 'Adds two numbers and returns their sum. Use for arithmetic operations. Returns a single numeric result.'
• Document output schema explicitly. Example: 'Returns {result: number}, the sum of a and b.'
• Add numeric constraints to parameters: 'a: number (range: -1e6 to 1e6)' and 'b: number (range: -1e6 to 1e6)' to prevent overflow and guide LLM input.
• Add error handling guidance: 'If inputs are not numbers, returns error with message. If result overflows, returns error suggesting smaller inputs.'
• Rename tool from 'add' to 'add_numbers' to follow verb_noun convention and improve discoverability in multi-tool scenarios.