miketromba/calculator
skills/calculator/SKILL.md
Perform mathematical calculations (add, subtract, multiply, divide). Use when you need to do any numerical calculations — never do mental math. Supports batch operations.
$ install --global
skillsauthnpx skillsauth add miketromba/skills calculatorInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: May 27, 2026, 7:00 AM341.2s4 files scanned
SKILL.md
- name:
- calculator
- description:
- Perform mathematical calculations (add, subtract, multiply, divide). Use when you need to do any numerical calculations — never do mental math. Supports batch operations.
Calculator
Perform mathematical calculations with precision. Use this skill for ANY numerical calculations — never do mental math.
Usage
Run the bundled script with JSON operations:
bun .cursor/skills/calculator/scripts/cli.ts '<json_operations>'
Input Format
Pass a JSON array of operations, where each operation has:
operator: One ofadd,subtract,multiply,divideoperands: Array of numbers (minimum 2)
Examples
Single calculation:
bun .cursor/skills/calculator/scripts/calculator.ts '[{"operator":"add","operands":[1,2,3]}]'
Multiple calculations (batched):
bun .cursor/skills/calculator/scripts/calculator.ts '[{"operator":"add","operands":[10,20]},{"operator":"multiply","operands":[5,6,2]},{"operator":"divide","operands":[100,4]}]'
Output
Returns JSON with results for each operation:
{
"results": [
{ "operation": "add(10, 20)", "result": 30 },
{ "operation": "multiply(5, 6, 2)", "result": 60 },
{ "operation": "divide(100, 4)", "result": 25 }
]
}
When to Use
- Always for any numerical calculation, no matter how simple
- Percentage calculations
- Unit conversions
- Aggregating numbers
- Any math where precision matters
Operation Reference
| Operator | Description | Example |
|----------|-------------|---------|
| add | Sum all operands | add(1,2,3) → 6 |
| subtract | Subtract from first | subtract(10,3,2) → 5 |
| multiply | Product of all | multiply(2,3,4) → 24 |
| divide | Divide sequentially | divide(100,2,5) → 10 |
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