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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, $0.0011/call, status unknown (last checked 2026-10-02).
Flattens a nested array to a specified depth, returning a single-level or partially-flattened array.
Price / call$0.0011
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 with a 'values' key containing the flattened array, e.g. {"values":[1,2,3,4,5]}. Elements are unwrapped to the specified depth, with deeper nesting preserved beyond that depth.
Example use cases
ETL pipeline data normalization
“I have a deeply nested array from my data source: [[1,[2,[3,4]]],[[5,6],7]]. Can you flatten it to depth 3 so I can feed it into my flat processing pipeline?”
API response unwrapping
“The API returned me this nested structure: [["a","b"],["c",["d","e"]]]. Flatten it one level deep so the values are easier to iterate over.”
Batch data preprocessing
“I need to normalize this nested dataset before running analysis — here's the array: [[10,[20,30]],[40,[50,[60,70]]]]. Flatten it completely to depth 10.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v1/array/flatten?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call array flattening operation inside an agent workflow without spinning up a compute environment. Ideal for small-to-medium arrays in automated pipelines where cost-per-call matters and depth control (1–10) is needed. Prefer it over in-process flattening when the agent runtime lacks code execution capability.
Side effects
- Depth outside 1–10 range returns a validation error
- Non-array 'values' input returns a schema error
- Extremely large arrays may hit payload size limits
- Missing 'values' field returns a 400 bad request
- Network timeout on very large array processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| depth | integer | |
| values | array |
Output
Schema · Response
{
"type": "json",
"example": {
"values": [
1,
2,
3
]
}
}Tags
x402
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