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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, $0.001/call, status unknown (last checked 2026-10-02).
Computes the cumulative (running) sum of an array of numeric values, with optional scaling, offset, clamping, and rounding controls.
Price / call$0.001
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 cumulative sum sequence — a running total array where each element is the sum of all preceding input values up to that index, optionally scaled by a factor, shifted by an offset, clamped to min/max bounds, and rounded to a specified number of decimal digits.
Example use cases
Running balance for transaction history
“I have a list of daily transaction amounts: [120, -45, 200, -30, 80, -15]. Can you compute the running balance at each step, rounded to 2 decimal places?”
Cumulative sales totals for reporting
“Here are our weekly sales figures: [3200, 4100, 2750, 5600, 3900]. Give me the cumulative sales total after each week so I can plot our progress.”
Prefix sums with scaling for signal processing
“Take this sensor reading array [0.5, 1.2, 0.8, 2.1, 1.5, 0.3] and compute the cumulative sum with a scale factor of 10 and offset of 100, clamped between 100 and 200, rounded to 1 decimal digit.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/numeric/cumulative-sum/t3?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call cumulative sum computation without standing up your own numeric processing infrastructure. Ideal for AI agents that occasionally need prefix sums, running totals, or cumulative aggregations on small-to-medium arrays (up to 1000 elements) and want built-in scaling, offset, and clamping in a single call. Prefer this over general-purpose code execution when you want a minimal, predictable cost ($0.001 USDC) with no setup overhead.
Side effects
- Array exceeds 1000 elements — request rejected
- Non-finite values (NaN, Infinity) in input array — validation error
- Missing required 'values' field — 400 bad request
- Payment not provided or insufficient — 402 Payment Required
- Invalid parameter types (e.g. string where number expected) — schema validation 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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