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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, $0.0065/call, status unknown (last checked 2026-10-02).
Flattens a nested JSON array into a single-level array, with optional offset, size limit, and comparison array parameters.
Price / call$0.0065
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 nested array, potentially filtered by offset and size, and optionally compared against another array.
Example use cases
Normalizing nested API response data
“I got back a deeply nested array from another API — [["apple", "banana"], ["cherry", ["date", "elderberry"]]] — can you flatten it into a single list so I can process it uniformly?”
Paginating through a flat view of nested data
“I have this nested array with up to 200 items and I want to flatten it and only return items starting at offset 10, giving me the next 20 items in the flat result.”
Comparing flat arrays after normalization
“Flatten my nested input array [[1,2],[3,[4,5]]] and compare it against this other array [1,2,3,4,5] to see if they match after flattening.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/flatten/t7?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call array flattening operation without standing up your own compute, especially inside an autonomous agent workflow on Base using x402 micropayments. It is ideal for one-off or infrequent array normalization tasks where the input is under 1000 items.
Side effects
- Input array exceeds 1000 items — request rejected or truncated
- Missing required 'values' field — validation error returned
- Malformed JSON in input — parse error
- Payment failure via x402 — 402 response, call not processed
- Offset exceeds array length — empty or partial result returned
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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