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ONE Engine Array Unique (t2)
x402
ONE Engine Array Unique (t2) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0007/call, status unknown (last checked 2026-10-02).
Returns the unique elements from a JSON array, with optional comparison against a second array, offset, and size limit.
Price / call$0.0007
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
A JSON object containing the deduplicated array of unique values from the input, optionally filtered against a comparison array, and sliced by offset and size parameters.
Example use cases
Deduplicating product tag lists
“I have this list of product tags that has a lot of repeats: ["sale","new","sale","featured","new","clearance"]. Can you strip out the duplicates and give me just the unique ones?”
Finding new items not in baseline
“Here's my current inventory list and a baseline list from last week — can you find which items are in the current list but not the baseline, so I know what's new?”
Paginating unique values from large array
“I have an array of 500 customer IDs with lots of duplicates. Can you give me the unique ones, but only return 50 at a time starting at offset 100?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/unique/t2?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call deduplication or set-difference operation on a JSON array without standing up your own compute. It is ideal for agents that occasionally need to clean up lists, find new items relative to a known set, or paginate through unique values — especially within the x402/Base micropayment ecosystem where per-call billing at $0.0007 USDC is acceptable.
Side effects
- Input array exceeds 1000 items — request rejected
- Malformed JSON array input — parsing error returned
- Payment not provided or insufficient — 402 Payment Required response
- Missing required 'values' field — validation error
- Network timeout on Cloudflare Worker edge
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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