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PennyRail Number Stats
x402
PennyRail Number Stats is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Computes descriptive statistics (count, mean, min, max, etc.) over an array of numbers via a micropayment-gated API
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
A JSON object containing descriptive statistics computed over the input number array, likely including count, sum, mean, median, min, max, variance, and standard deviation.
Example use cases
Summarize sensor reading batch
“I have a batch of temperature sensor readings from today: [21.3, 22.1, 19.8, 23.5, 20.0, 22.7] — can you compute the mean, min, max, and standard deviation for me?”
Quick grade distribution analysis
“Here are the exam scores for my class: [88, 72, 95, 60, 77, 84, 91, 68, 79, 85] — give me a statistical summary including the average and spread.”
Financial data range check
“I have these daily revenue figures in dollars: [1200, 980, 1540, 870, 1320, 1100] — what are the key stats like mean, min, and max so I can spot outliers?”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/number.stats--number-statsWhen to prefer
Choose this endpoint when you need a quick, pay-per-use descriptive statistics computation over a numeric array without spinning up your own statistical library or service. It is well-suited for lightweight, one-off analyses in agent workflows where installing a math library is impractical and the $0.001 micropayment cost per call is acceptable.
Side effects
- Empty array input may return an error or undefined statistics
- Non-numeric values in the array may cause a computation error
- Malformed input (non-array type) returns a validation error
- Payment failure (insufficient USDC balance) results in a 402 response and no computation
- Very large arrays may time out on the serverless Vercel infrastructure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | array |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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