The 'add' tool has a minimal but functional definition. The tool is correctly named with a verb (add) and has a short description ('Add two numbers'). However, it suffers from critical deficiencies: (1) parameter descriptions are null/missing entirely, violating the baseline that 100% of A+ tools have parameter descriptions; (2) output schema is not documented, LLMs cannot infer what the tool returns; (3) the description is extremely brief (17 chars), well below the baseline average of 194 chars for tool descriptions, providing minimal context about when/why to use it. The tool is overly simplistic (a pure math function with no state, errors, or composition potential), which limits its utility in real agent scenarios. The fastmcp framework auto-generates schemas from type hints, but the lack of explicit parameter documentation leaves critical details unexpressed in the schema.

• Add descriptions to both parameters: 'a' and 'b'. Example: '"a": {"type": "integer", "description": "The first number to add (any integer)"}'
• Expand the tool description to 50-150 characters, explaining when to use it. Example: 'Add two integers together and return their sum. Use this when you need to perform basic arithmetic addition.'
• Document the output schema explicitly (even though fastmcp infers it from the return type annotation). Add a docstring field or explicit type hint comment indicating the return type is an integer.
• Consider adding validation/error handling if this tool is used in production. For example, handle edge cases like integer overflow (though Python handles this gracefully).