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ONE Engine Array Intersection (T4)
x402
ONE Engine Array Intersection (T4) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-02).
Computes the intersection of two arrays, returning elements present in both, with optional offset and size pagination controls.
Price / call$0.0015
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 array of elements that appear in both the primary 'values' array and the optional 'other' comparison array. Results may be paginated using 'size' and 'offset' parameters.
Example use cases
Shared user ID overlap detection
“I have a list of user IDs who signed up this month and another list of IDs who made a purchase — find me the ones that appear in both lists so I can target them for a loyalty reward.”
Filtering product catalog by availability
“I've got a list of product SKUs the customer wants and another list of SKUs we currently have in stock — give me only the ones that appear in both so I know what I can actually fulfill.”
Deduplicating matched tags across two datasets
“Compare these two tag arrays and tell me which tags show up in both: the first is from our content library and the second is from our ad campaign targeting list — I want the overlap, up to 20 results.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/intersection/t4?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, cheap, pay-per-call array intersection without spinning up your own set-logic computation — especially in agentic pipelines on Base where x402 micropayments are already supported. It supports pagination via size/offset, making it suitable for large result sets. Prefer it over in-memory set logic when the agent environment is stateless or when you want a consistent, hosted utility with predictable pricing.
Side effects
- Missing required 'values' field returns a 400-level error
- Array exceeding 1000 items may be rejected or truncated
- Mismatched data types between arrays may yield empty intersection
- Payment not included or insufficient USDC triggers 402 Payment Required
- Malformed JSON input returns a parse 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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