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ONE Engine Array Unique Filter
x402
ONE Engine Array Unique Filter is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).
Returns only the unique (deduplicated) elements from a JSON array, with optional comparison against a second array.
Price / call$0.018
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
An object containing the deduplicated array — only unique elements from the input values array are returned, with duplicates removed. If a comparison array is provided, uniqueness is evaluated relative to that second array. Supports pagination via size and offset parameters.
Example use cases
Deduplicating user ID list
“I have a list of user IDs collected from multiple sources and there are lots of repeats — can you remove all the duplicates and give me back only the unique IDs? Here's the array: [101, 202, 101, 303, 202, 404].”
Comparing two tag arrays for unique entries
“I've got two arrays of tags from different blog posts and I want to know which tags appear uniquely — compare ["javascript", "react", "css"] against ["react", "python", "css"] and return only the unique values.”
Cleaning up duplicate product SKUs
“Before I send this order data to our fulfillment system, can you deduplicate this array of product SKUs? I have up to 500 items and need only distinct SKUs returned: ["SKU-001", "SKU-002", "SKU-001", "SKU-003"].”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/unique/t9?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call array deduplication operation without standing up your own infrastructure. Ideal for autonomous agents performing data-cleaning steps in a pipeline, especially when the input is already a JSON array and the cost of $0.018 USDC per call is acceptable. Prefer this over building custom deduplication logic when simplicity and low overhead matter. The optional comparison array makes it useful for set-difference operations, not just simple deduplication.
Side effects
- Array exceeds 1000-item limit — request rejected
- Malformed or non-array values field — validation error
- Payment failure via x402 — 402 response before processing
- Empty array input — may return empty result
- Network timeout on Cloudflare Worker — transient 5xx error
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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