This server has critical definition quality gaps. All three tools lack parameter descriptions (null values visible in schema). Tool names lack action verbs (add, multiply, get_weather are acceptable but descriptions are minimal). The 'mutltiply' tool has a typo in its name and description ('twonumbers' should be 'two numbers'). Descriptions are extremely short (10-27 chars), below the 34-char p10 baseline. No output schemas are documented. No error handling guidance. Parameter types are present but descriptions are entirely absent, violating the 100% A+ baseline for param descriptions.

• Add non-empty descriptions to every parameter. Example: 'a: The first integer to add (range: -2147483648 to 2147483647)' instead of null.
• Expand tool descriptions to 50-200 characters. Example for add: 'Add two integers and return their sum. Use for arithmetic operations in calculations.'
• Fix the typo: rename 'mutltiply' to 'multiply' and update description to 'Multiply two integers and return their product.'
• Document output schemas. Example: add returns {type: 'integer', description: 'The sum of a and b'}.
• Add error handling for invalid inputs (non-integer values, overflow). Return structured errors like {error: 'Invalid input', message: 'Expected integers, got X', suggestion: 'Ensure both parameters are whole numbers'}.