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ONE Engine Array Flatten
x402
ONE Engine Array Flatten is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).
Flattens a nested JSON array into a single-level array, with optional comparison array and offset/size controls.
Price / call$0.004
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 flattened (single-level) version of the input array, with optional filtering applied via offset and size parameters. The response may also include comparison results if an optional comparison array was provided.
Example use cases
Normalize nested API response arrays
“I got a deeply nested array back from an API response and need to flatten it into a single list before I can process it further — here's the array: [["a",["b","c"]],["d",["e",["f"]]]]”
Compare flattened arrays for data pipeline
“Flatten this nested array [[1,[2,3]],[4,[5,6]]] and compare it against this reference array [1,2,3,4,5,6] so I can check if the values match after normalization.”
Paginate through large flattened dataset
“I have a big nested array with about 800 items across multiple levels of nesting — flatten it but only return 100 items starting at offset 200 so I can paginate through the results.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/flatten/t6?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call array flattening utility without provisioning your own compute, especially within an autonomous agent workflow on Base using x402 micropayments. Prefer this over custom code when you need a reliable, low-cost single API call for one-off or infrequent array normalization tasks.
Side effects
- Input array exceeds 1000 items — request rejected
- Malformed JSON array in 'values' field — parsing error returned
- Payment not included or insufficient — 402 Payment Required response
- Size or offset values out of valid integer range — validation error
- Empty 'values' field — missing required parameter error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| size | integer | |
| other | array | Optional comparison array |
| offset | integer | |
| valuesrequired | array | JSON array with at most 1000 items |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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