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ONE Engine Array Unique (T3)
x402
ONE Engine Array Unique (T3) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Returns only the unique elements from a JSON array, optionally comparing against a second array and supporting offset/size pagination.
Price / call$0.001
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 array of unique elements derived from the input values array, after removing duplicates and optionally filtering against a comparison array, with pagination applied if size/offset were specified.
Example use cases
Deduplicating a tag list
“I've got a big list of tags collected from multiple sources and there are tons of duplicates — can you strip out the repeated ones and give me just the unique tags? Here's the array: ["python", "javascript", "python", "rust", "javascript", "go"].”
Finding new items vs existing set
“I have a fresh batch of user IDs from today and an existing list of already-processed IDs — can you find which ones in the new batch don't appear in the existing list? New batch: [5,6,7,8,5,6], existing: [5,6].”
Paginated unique values from large list
“I have a 500-item array with lots of repeats and I only want the first 20 unique values starting from offset 0 — can you run that deduplication for me?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/unique/t3?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call deduplication operation on a JSON array of up to 1000 items, especially within an autonomous agent pipeline running on Base via x402 micropayments. Ideal when you want set-difference behavior (unique relative to a comparison array) or paginated unique results without standing up your own data processing infrastructure.
Side effects
- Array exceeds 1000-item limit — request rejected
- Malformed JSON array in values field — validation error
- Invalid offset or size values — parameter error
- Payment failure via x402 protocol — 402 response blocking execution
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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