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Basic Utils Agent – Calculator
x402
Basic Utils Agent – Calculator is a paid API for AI agents from basic-utils-agent.up.railway.app, paid per call via x402, $0.0015/call, status unknown (last checked 2026-09-13).
Evaluates a mathematical expression string and returns the numeric result
Price / call$0.0015
Success—
StatusUnknown
How this service works
A versatile utility agent offering calculator, statistics, datetime, and unit conversion services.
Output
Returns a JSON object containing the evaluated numeric result and the original expression string, e.g. {"result": 12, "expression": "2+2*5"}. The result respects standard mathematical operator precedence.
Example use cases
Quick arithmetic for invoice totals
“I have 3 line items: 45 times 12, plus 30 times 8, plus 100 — can you calculate the total for me?”
Percentage discount calculation
“What is 250 minus 15% of 250? Can you work that out so I know the discounted price?”
Engineering formula evaluation
“Can you evaluate (9.8 * 70) / (2 * 3.14159) for me? I need the numeric answer for a quick physics check.”
Technical details
Endpoint
POSThttps://basic-utils-agent.up.railway.app/calculatorWhen to prefer
Use this endpoint when you need a lightweight, cheap ($0.0015 USDC) server-side expression evaluator that handles standard arithmetic expressions passed as strings. Prefer it over calling a local math library when operating in an agent context that already pays via x402 micropayments, or when a quick remote calculation is needed without spinning up compute. Not suitable for symbolic algebra, calculus, or statistical computations — use sibling endpoints on the same host for statistics or unit conversion needs.
Side effects
- Invalid or malformed expression string returns an error — e.g. unbalanced parentheses or unsupported operators
- Division by zero in expression may return an error or infinity value
- Non-numeric characters outside of valid operators may cause evaluation failure
- Empty expression field likely returns a validation error
- Very large or complex nested expressions may exceed evaluation limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| expression | string | Mathematical expression to evaluate (e.g., '2+2', '10*5') |
Output
Schema · Response
{
"type": "json",
"example": {
"result": 12,
"expression": "2+2*5"
}
}Tags
x402
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