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Keyronne Math & Stats API
x402
Keyronne Math & Stats API is a paid API for AI agents from keyronne.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).
Deterministically evaluates arithmetic expressions, converts between 80+ units, and computes descriptive statistics over large datasets
Price / call$0.001
Success—
StatusUnknown
How this service works
Exact computation LLMs cannot do reliably: evaluate arithmetic expressions (trig, logs, powers, factorials, constants), convert between 80+ units across 11 dimensions (length, mass, temperature, data, speed, energy, pressure...), and compute descriptive statistics (mean, median, stdev, percentiles) over up to 100k numbers. Deterministic, no hallucinated arithmetic.
Output
Returns computed results for any combination of: (1) the evaluated numeric value of the math expression, (2) the converted value with source and target units, and (3) a full descriptive statistics object including mean, median, standard deviation, min, max, and percentiles for the provided numeric array.
Example use cases
Example prompt
“Calculate sqrt(2) * sin(pi/4) + 17^2 exactly, then also convert 100 mph to km/h, and give me the mean, median, and standard deviation for this dataset: [4, 7, 13, 2, 9, 15, 3, 11, 6, 8].”
Technical details
Endpoint
POSThttps://keyronne.com/api/calc?utm_source=zero.xyzWhen to prefer
Use this endpoint whenever an LLM would otherwise attempt to do arithmetic, unit conversion, or statistical computation inline — especially for trig/log/factorial/power expressions, cross-system unit conversions, or descriptive stats over large datasets where hallucinated math is a risk. Prefer this over general-purpose code execution when you need a lightweight, deterministic, single-call solution with no setup.
Side effects
- Invalid or unparseable math expression returns an error with description
- Unrecognized unit names return an error indicating the unsupported unit
- Array length exceeding 100,000 numbers is rejected
- Malformed JSON body returns a 400-level error
- Division by zero or undefined mathematical operations return a computation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| stats | array | Numbers to describe statistically (up to 100,000). |
| convert | object | |
| expression | string | Math expression, e.g. "sqrt(2)*sin(pi/4)", "fact(20) / 2^10". |
Tags
x402
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