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Duo Data Utilities – Descriptive Statistics
x402
Duo Data Utilities – Descriptive Statistics is a paid API for AI agents from api.duoleads.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-02).
Computes comprehensive descriptive statistics (count, mean, median, mode, variance, stdev, quartiles, skewness, kurtosis, percentiles, and more) for a supplied numeric array in a single call.
Price / call$0.05
Success—
StatusUnknown
How this service works
Descriptive statistics for a supplied numeric array in one call: count, sum, mean, median, mode, variance and standard deviation with variance and standard deviation honouring ddof (default 1, the sample form; 0 gives the population form) and always-population *_population fields, min, max, range, the quartiles and interquartile range, skewness, kurtosis, and any requested percentiles. Percentiles use a named interpolation method so the result is reproducible rather than implementation-defined.
Output
A JSON object containing: n (count), sum, mean, median, mode, variance (sample and population), standard deviation (sample and population), min, max, range, q1, q3, iqr, skewness, excess kurtosis, percentiles keyed by requested values, Tukey outliers list, plus metadata including request_id, computed_at timestamp, price, and a deterministic flag.
Example use cases
Summarize student test score distribution
“I have these student exam scores: 55, 62, 70, 71, 75, 78, 80, 82, 85, 90, 95 — can you compute the full statistical summary including quartiles, skewness, and the 10th and 90th percentiles using linear interpolation?”
Compare sample vs population variance for sensor readings
“Here are some sensor temperature readings: 22.1, 22.4, 21.9, 23.0, 22.7, 21.8, 22.6 — calculate the descriptive stats and make sure I get both sample and population variance and standard deviation.”
Detect outliers in monthly revenue figures
“Run a stats summary on these monthly revenue numbers: 4200, 4350, 4100, 4500, 9800, 4250, 4400, 4300 — I want to see the IQR, Tukey outliers, median, and mean so I can spot any anomalies.”
Technical details
Endpoint
GEThttps://api.duoleads.com/v1/num/stats?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, reproducible statistical summary of a numeric dataset in a single API call, especially when you need both sample and population variance/stdev, multiple named percentiles with a specified interpolation method, or distributional shape metrics like skewness and kurtosis — without building your own stats library or running a Python/R environment.
Side effects
- Missing or empty 'values' parameter returns a validation error
- Non-numeric or non-finite values in the array cause a parse/validation error
- More than 500 values provided exceeds the array size limit
- More than 20 percentiles requested exceeds the percentile limit
- Invalid 'method' enum value returns a validation error
- Invalid 'ddof' value (non-integer) causes a parameter error
- Payment of 0.05 USDC not fulfilled results in HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"data": {
"n": 5,
"q1": 2,
"q3": 4,
"iqr": 2,
"max": 5,
"min": 1,
"sum": 15,
"ddof": 1,
"mean": 3,
"mode": null,
"range": 4,
"stdev": 1.58113883008419,
"median": 3,
"method": "linear",
"skewness": 0,
"variance": 2.5,
"percentiles": {
"25": 2,
"50": 3,
"75": 4
},
"outliers_tukey": [],
"kurtosis_excess": -1.199999999999999,
"stdev_population": 1.414213562373095,
"variance_population": 2
},
"meta": {
"price_usd": "0.05",
"disclaimer": "Factual output of a deterministic computation over public data. Provided as is, with no warranty of accuracy, completeness or availability. Not investment, financial, legal, tax, medical or any other professional advice, and not a recommendation. Verify before relying on it. Terms: https://api.duoleads.com/terms",
"request_id": "01K6B7Q4ZC8H3F2M9WXR5TYN0D",
"computed_at": "2026-09-28T12:00:00.000Z",
"deterministic": true
},
"route": "/v1/num/stats",
"version": "1.0.0"
}
}Tags
x402
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