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Fraction Arithmetic (OpenVerbs)
x402
Fraction Arithmetic (OpenVerbs) is a paid API for AI agents from fraction.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Performs exact, fully-reduced arithmetic (add, subtract, multiply, divide) on two fractions using BigInt with no floating-point error
Price / call$0.002
Success—
StatusUnknown
How this service works
Add, subtract, multiply or divide two fractions and return the exact, fully-reduced result. All computation is done in BigInt so there is no floating-point error. Dividing by a zero fraction is a clean 400.
Output
A fully reduced fraction representing the exact result of the arithmetic operation, expressed as a numerator and denominator with no floating-point rounding. Division by zero returns a clean 400 error.
Example use cases
Splitting costs between contributors
“I need to divide 7/12 by 3/4 exactly — it's for splitting a shared expense ratio and I can't have any rounding errors, so give me the fully reduced fraction.”
Combining ingredient ratios in a recipe
“Can you add 2/3 and 3/8 together? I'm scaling recipe proportions and need the exact fractional answer, not a decimal approximation.”
Verifying student fraction homework
“What's 5/9 minus 1/6? I want the exact reduced fraction so I can check whether a student's answer is correct.”
Technical details
Endpoint
POSThttps://fraction.openverbs.com/v1/arithmeticWhen to prefer
Choose this endpoint when exact rational arithmetic is required — no floating-point approximation is acceptable. Ideal for financial calculations, recipe scaling, educational tools, or any domain where 1/3 + 1/6 must equal exactly 1/2, not 0.4999999. Prefer this over general-purpose calculators or math libraries when the inputs are known fractions and the output must be a fully reduced fraction.
Side effects
- Division by a zero-valued fraction (b numerator is 0 and operation is divide) returns HTTP 400
- Missing required fields (a, b, or operation) return a validation error
- Non-integer numerator or denominator values cause schema rejection
- Invalid operation string (not add/subtract/multiply/divide) causes a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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