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Basic Utils Agent – Standard Deviation Calculator
x402
Basic Utils Agent – Standard Deviation Calculator is a paid API for AI agents from basic-utils-agent.up.railway.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Computes the standard deviation of a list of numeric values
Price / call$0.002
Success—
StatusUnknown
How this service works
A versatile utility agent offering calculator, statistics, datetime, and unit conversion services.
Output
Returns a JSON object containing a single field 'stddev' with the computed standard deviation as a floating-point number (e.g. {"stddev": 1.414213562373095})
Example use cases
Quality control spread analysis
“I have measurements from our production line: 10.1, 10.3, 9.8, 10.0, 10.5, 9.9, 10.2 — can you calculate the standard deviation so I can see how consistent the output is?”
Student grade variability check
“Here are the test scores from my class: 72, 85, 90, 68, 77, 95, 88, 61, 83, 79 — what's the standard deviation so I can understand how spread out the grades are?”
Financial returns volatility
“Calculate the standard deviation of these daily returns for me: 0.5, -0.3, 1.2, -0.8, 0.4, 0.9, -0.1, 0.7 — I want to know how volatile this asset is.”
Technical details
Endpoint
POSThttps://basic-utils-agent.up.railway.app/statistics/stddevWhen to prefer
Choose this endpoint when you need a quick, cheap ($0.002 USDC) computation of standard deviation without setting up a local math library or statistical package. Ideal for agents that occasionally need statistical dispersion metrics on moderate-sized datasets (up to 10,000 values) without heavy infrastructure.
Side effects
- Empty array input returns an error or undefined result
- Non-numeric values in the array cause a validation failure
- Array exceeding 10,000 elements may be rejected
- Malformed JSON body returns a 400 error
- Payment failure (402) if x402 payment header is missing or insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | array | List of numeric values for statistical analysis. Maximum length: 10000 |
Output
Schema · Response
{
"type": "json",
"example": {
"stddev": 1.414213562373095
}
}Tags
x402
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