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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, $0.001/call, status unknown (last checked 2026-10-02).
Computes the intersection of two arrays, returning elements common to both input sets.
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
Returns a JSON object containing the array of elements that appear in both the primary 'values' array and the 'other' comparison array, respecting optional 'size' (max results) and 'offset' (pagination) parameters.
Example use cases
Matching user permissions across roles
“I have two lists of permission IDs — one for role A and one for role B — can you find which permissions they share? Here's role A: ["read","write","delete","admin"] and role B: ["read","write","publish"].”
Finding mutual followers or contacts
“Compare these two user ID lists and tell me who appears in both — list A is [101,205,340,512,678] and list B is [205,340,900,678,111].”
Deduplicating product tag overlap
“I've got two product tag arrays and need to know which tags they have in common — array one is ["sale","new","featured","clearance"] and array two is ["new","clearance","trending"].”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/intersection/t3?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a cheap, fast, pay-per-call set intersection on up to 1000-element arrays without standing up any infrastructure. Ideal for lightweight pipelines where spinning up a database or full computation engine is overkill and cost-per-call billing via USDC on Base is acceptable.
Side effects
- Missing required 'values' field returns a 400-level error
- Input array exceeding 1000 items may be rejected or truncated
- Payment failure via x402 protocol results in 402 response
- Malformed JSON body causes parsing error
- Empty intersection returns an empty array (not an 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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