All 13 tools have minimal descriptions (10-30 chars) and lack parameter detail. Schemas are present but incomplete: parameters lack descriptions, and return types are not documented. No error handling guidance, no output schema documentation, and no tool composition support. Tool names are generic (add, sub, mul) rather than verb_noun patterns. This server falls well below production baseline (194 char avg description, 72 char avg param annotation).

• Expand all tool descriptions to 50-200 characters. Example: 'add' → 'Add two integers and return their sum. Use for arithmetic operations requiring addition.'
• Add descriptions to all parameters. Example: 'a: The first number (integer). b: The second number (integer).'
• Document return types in tool descriptions. Example: 'Returns an integer representing the sum of a and b.'
• Rename tools to verb_noun pattern: add→calculate_sum, sub→calculate_difference, mul→calculate_product, div→calculate_quotient, pow→calculate_power, cbrt→calculate_cube_root, log→calculate_logarithm.
• Add error handling for edge cases (division by zero, log of negative, sqrt of negative). Return actionable error messages: 'Cannot divide by zero. Provide a non-zero divisor.'