Two tools with basic schemas and minimal descriptions. Both tools have input schemas with proper types (number, string enum), but descriptions are extremely short (10-40 chars) and lack context for LLM selection. No output schema documentation. Error handling is minimal (divide-by-zero check in calculate tool only). Tool names are action-oriented (add, calculate) but descriptions don't explain WHEN to use each tool or their differences. No parameter descriptions beyond type hints in schema. Lacks guidance on tool composition or error recovery.

• Expand tool descriptions to 50-200 chars. Example for add: 'Adds two numbers and returns the sum. Use this for simple two-operand addition; use calculate() for subtract, multiply, or divide operations.'
• Add parameter descriptions in schema. For add: a='First number to add (any real number)', b='Second number to add (any real number)'. For calculate: operation='Arithmetic operation: add, subtract, multiply, or divide', a='First operand (any real number)', b='Second operand (any real number, non-zero for divide)'.
• Document output schema explicitly. E.g., 'Returns {result: number}' or specify the exact text format returned in content[0].text.
• Enhance error handling with actionable messages. For divide-by-zero: 'Cannot divide by zero. Ensure b ≠ 0 and retry.' For invalid operations: 'Invalid operation. Must be one of: add, subtract, multiply, divide.'
• Clarify tool roles. Either merge add into calculate (remove redundancy) or document: 'Use add() for simple two-number addition; use calculate() when you need subtract, multiply, or divide operations.'