ONE Engine Array Union

x402

ONE Engine Array Union 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).

Computes the union of two arrays, returning all unique values that appear in either array.

Price / call$0.0011

Seller volume →—

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 count of unique elements and an array of all values (deduplicated) that appear in either input array A or array B, e.g. {"count": 3, "values": [1, 2, 3]}.

Example use cases

Merging tag lists across content items

“I have two lists of tags from different blog posts — ["javascript","react","frontend"] and ["react","node","backend"] — can you give me the full set of unique tags combined?”

Deduplicating product ID collections

“I've got two batches of product IDs from different sales channels: [101, 202, 303] and [202, 303, 404, 505]. Can you merge them into one deduplicated list?”

Combining user permission sets

“Take these two permission arrays — ["read","write"] and ["write","delete","admin"] — and give me the union so I know all distinct permissions a user would have.”

Technical details

Endpoint

POSThttps://one-search.one-engine.workers.dev/v1/array/union?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, cheap, pay-per-call set union operation on two arbitrary arrays without spinning up your own logic. It is ideal for autonomous agents that need lightweight, stateless array math on Base-settled micropayments with no server overhead.

Side effects

Missing or malformed array inputs return an error
Non-array values for 'a' or 'b' fields may cause validation failures
Payment failure via x402 prevents execution
Empty arrays on both sides return count 0 and empty values array

Input

Schema · Request body

Field	Type	Description
a	array
b	array

Output

Schema · Response

{
  "type": "json",
  "example": {
    "count": 3,
    "values": [
      1,
      2,
      3
    ]
  }
}

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