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ONE Engine Cumulative Sum
x402
ONE Engine Cumulative Sum 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).
Computes the cumulative (running) sum of an array of numeric values, with optional scaling, offsetting, and output constraints.
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 an object containing the cumulative sum array derived from the input values, with each element representing the running total up to that index, optionally scaled by a factor, shifted by an offset, clamped to min/max bounds, resized to a specified output size, and rounded to the specified number of decimal digits.
Example use cases
Running total for expense tracking
“I have a list of daily expenses for the month: [12.50, 34.00, 8.75, 22.10, 45.60] — can you give me the running total after each day, rounded to 2 decimal places?”
Cumulative sales performance analysis
“Here are weekly sales figures: [1500, 2300, 1800, 3100, 2750] — compute the cumulative sum so I can see how total revenue builds up week over week.”
Scaled and offset prefix sums
“Take this array [10, 20, 30, 40, 50], compute the cumulative sum, apply a scale factor of 0.5, and add an offset of 100 to each result — give me everything rounded to 1 decimal digit.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/numeric/cumulative-sum/t9?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, pay-per-call cumulative sum computation without managing your own compute infrastructure, especially in autonomous agent pipelines on Base using x402 micropayments. It is ideal for small-to-medium arrays (up to 1000 elements) where you also need post-processing options like scaling, offset, clamping, and rounding in a single call.
Side effects
- Array exceeds 1000 elements — request rejected
- Non-finite numbers (NaN, Infinity) in input values — validation error
- Missing required 'values' field — 400 bad request
- Payment not provided or insufficient — 402 Payment Required
- Output size mismatch if 'size' parameter is inconsistent with input length
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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