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ONE Engine Array Intersection
x402
ONE Engine Array Intersection 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 intersection of two arrays, returning shared elements and their count.
Price / call$0.0011
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
A JSON object with a 'count' integer indicating how many elements are shared between the two input arrays, and a 'values' array listing those shared elements.
Example use cases
Deduplicating shared user segments
“I have two lists of user IDs — one from last month's campaign and one from this month's. Can you find which user IDs appear in both lists so I know who was targeted twice?”
Finding overlapping product tags
“I have a list of tags from product category A and another list from product category B. Which tags appear in both? I want the shared ones and a count.”
Checking mutual permissions
“Here are two permission sets: ['read', 'write', 'delete', 'admin'] and ['read', 'write', 'execute']. What permissions do both sets have in common?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v1/array/intersection?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, low-cost programmatic intersection of two arrays without spinning up local compute or a database query. Ideal for autonomous agents that need set overlap on the fly and want to pay per call rather than maintain infrastructure. Best for small-to-medium arrays where a simple shared-element computation suffices.
Side effects
- Missing one or both arrays returns a validation error
- Non-array input types cause schema mismatch errors
- Empty arrays on either side return count 0 and empty values
- Payment failure via x402 returns HTTP 402 and the call is not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| a | array | |
| b | array |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 2,
"values": [
2,
3
]
}
}Tags
x402
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