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ONE Engine Numeric Percent Change (T2)
x402
ONE Engine Numeric Percent Change (T2) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0007/call, status unknown (last checked 2026-10-02).
Computes percent-change values for an array of numbers, with optional scaling, clamping, and rounding controls.
Price / call$0.0007
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 computed percent-change values derived from the input array, potentially scaled, offset, clamped between min/max, resized to a specified count, and rounded to a given number of decimal digits.
Example use cases
Stock price change analysis
“I have this list of daily closing prices: [150, 153, 148, 160, 157, 165] — can you compute the percent change between each value, rounded to 2 decimal places?”
Sensor reading drift detection
“Here are my IoT sensor readings over time: [200, 198, 205, 210, 195, 220] — compute the percent change for each step and clamp results between -50 and 50.”
Scaled revenue growth reporting
“Calculate the percent change for these monthly revenue figures [10000, 10800, 9900, 11500, 12000], apply a scale factor of 100, and return 1 decimal digit of precision.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/numeric/percent-change/t2?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call computation of percent changes on a numeric array without spinning up your own math infrastructure. Ideal for agents needing on-demand numerical transformation at fractions of a cent, especially in x402/Base payment workflows. Prefer this over general-purpose math libraries when you want a hosted, no-setup solution with optional clamping, scaling, and rounding in one call.
Side effects
- Input array contains non-finite numbers (Infinity, NaN) — rejected with validation error
- Array exceeds 1000 elements — request refused
- Missing required 'values' field — 400-level error
- Payment not included or insufficient — 402 Payment Required response
- Division by zero when a base value is 0 — may produce Infinity or error
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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