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 present in 'calculate' (divide-by-zero) but not generalized. Tool names are action verbs but lack specificity, 'add' and 'calculate' don't clearly distinguish when to use each. No parameter descriptions beyond type hints. Schemas visible and properly typed, but descriptions fall well below the 50-200 char baseline for A+ tools.

• Expand tool descriptions to 50-200 chars. Example: 'add' → 'Add two numbers together. Use this for simple addition of integers or decimals. Returns the numeric sum.'
• Add parameter descriptions to all inputs. Example: 'a: First number to add (integer or decimal, no bounds)' and 'b: Second number to add (integer or decimal, no bounds)'.
• Document output schema explicitly. Example: 'Returns: {result: number}, the numeric result of the operation as a string-formatted number.'
• Consolidate 'add' and 'calculate' into a single 'perform_arithmetic' tool or rename 'add' to 'add_numbers' to avoid redundancy and clarify intent.
• Enhance error handling with actionable guidance. Example: divide-by-zero error should return 'Cannot divide by zero. Ensure the second operand (b) is non-zero.' with a suggestion to retry with valid input.