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ONE Engine Array Unique
x402
ONE Engine Array Unique 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).
Returns the unique (deduplicated) elements from a JSON array, optionally compared against a second array.
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 deduplicated array of unique values extracted from the input, with duplicates removed. If a comparison array is provided, the result reflects uniqueness relative to that reference set. Supports pagination via size and offset parameters.
Example use cases
Deduplicating collected user tags
“I've gathered tags from user submissions and there are lots of duplicates — can you run this array through the unique filter and give me back only the distinct tag names? Here's the list: ["travel", "food", "travel", "tech", "food", "music", "tech"].”
Finding new items not in existing list
“I have a fresh batch of product IDs and I want to know which ones aren't already in my catalog. Can you compare this new array ["SKU-001", "SKU-002", "SKU-003", "SKU-004"] against my existing catalog ["SKU-001", "SKU-003"] and return only the new unique ones?”
Cleaning a dataset of repeated entries
“Before I process this dataset, I need to strip out all duplicate entries. Please deduplicate this array of 50 email addresses and return just the unique ones, starting from offset 0 and limiting to 25 results.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/unique/t6?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cheap, fast, pay-per-call deduplication of a JSON array without setting up a dedicated data pipeline or calling a heavier data processing service. Ideal for AI agents performing ad-hoc data cleaning steps mid-workflow, especially when the array is under 1000 items and you want sub-cent pricing via x402 on Base.
Side effects
- Array exceeds 1000-item limit — request rejected
- Malformed JSON array input — validation error returned
- Missing required 'values' field — bad request error
- Network or worker timeout on large arrays
- Payment failure via x402 — 402 response before processing begins
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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