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ONE Engine Linear Scale (Numeric)
x402
ONE Engine Linear Scale (Numeric) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).
Applies a linear scaling transformation to an array of numeric values, mapping them to a specified range or scale factor with optional offset and digit rounding.
Price / call$0.018
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
Returns a JSON object containing the linearly scaled output array of numbers, with values mapped according to the specified min/max range, factor, offset, and digit rounding parameters.
Example use cases
Normalize ML feature values
“I have these raw feature values [12.4, 88.0, 34.5, 5.1, 67.3] that I need normalized to a 0-to-1 range with 4 decimal digits of precision before feeding them into my model — can you do that?”
Rescale survey scores to percentage
“Take these survey response scores [1, 3, 2, 5, 4, 3, 1, 5] which are on a 1–5 scale and rescale them to 0–100 so I can display them as percentages, rounded to 1 decimal place.”
Apply gain and offset to sensor data
“I've got a list of raw sensor readings [0.01, 0.45, 0.78, 0.23, 0.99] and I need to multiply each by a factor of 5.0 and then add an offset of 2.5 to get the calibrated output values.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/numeric/linear-scale/t9?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call linear normalization or scaling operation for arrays up to 1000 numbers without spinning up your own compute. Ideal for autonomous agents that need occasional numeric preprocessing steps — such as normalizing ML inputs, rescaling sensor data, or applying gain/offset corrections — without maintaining a data pipeline. The x402/Base micropayment model makes it cost-effective at $0.018 per call for infrequent or on-demand use cases.
Side effects
- Input array exceeds 1000 elements — request rejected
- Non-finite numbers (NaN, Infinity) in values array cause validation error
- Payment failure via x402 protocol returns 402 status with payment details
- Missing required 'values' field returns 400 bad request
- Conflicting min/max or zero-range parameters may produce undefined behavior
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| max | number | |
| min | number | |
| size | integer | |
| digits | integer | |
| factor | number | |
| offset | number | |
| valuesrequired | array | Finite numbers, maximum 1000 |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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