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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 (e.g. mean, median, min, max, std dev) over an array of numbers
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object with an 'operation' string identifying the statistical operation performed and a 'result' field containing the computed value(s), such as mean, median, min, max, count, sum, or standard deviation. Additional fields may be present depending on the operation.
Example use cases
Summarize sensor reading dataset
“I have a batch of temperature sensor readings — [22.1, 23.4, 21.8, 24.0, 22.9] — can you give me the summary stats like mean, min, max, and std dev?”
Quick stats check on survey scores
“I collected these NPS scores from our last survey: [8, 9, 7, 10, 6, 8, 9, 7]. What are the basic descriptive statistics for them?”
Validate numeric distribution before ML training
“Before I feed this feature column into my model, can you calculate the mean and standard deviation for these values: [0.5, 1.2, 0.8, 1.5, 0.3, 1.1, 0.9]?”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/f/number.statsWhen to prefer
Choose this endpoint when you need fast, lightweight descriptive statistics on a numeric array without standing up your own computation infrastructure. It is ideal for agents that process small-to-medium numeric datasets on demand and want a pay-per-call model at $0.001 USDC, avoiding heavier analytics APIs or local code execution.
Side effects
- Empty input array returns an error or undefined result
- Non-numeric values in the array cause a type error or malformed response
- Missing 'input' field in request body returns a 400-level error
- Very large arrays may time out or exceed payload limits
- Payment failure (402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | array | number[] |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| resultrequired | — | |
| operationrequired | string |
Tags
x402
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