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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, $0.0025/call, status unknown (last checked 2026-10-02).
Computes the intersection of two JSON arrays, returning elements common to both
Price / call$0.0025
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 array of elements that appear in both the primary `values` array and the `other` comparison array. Results may be paginated via `size` and `offset` parameters.
Example use cases
Finding shared user IDs across datasets
“I have two lists of user IDs — one from our email subscribers and one from our app signups. Can you find which user IDs appear in both lists? Here's the subscriber list: [101, 202, 303, 404, 505] and the signup list: [202, 303, 606, 707, 101].”
Matching product SKUs between inventories
“Compare these two product SKU arrays and tell me which SKUs exist in both: the warehouse list is ['SKU-A1','SKU-B2','SKU-C3','SKU-D4'] and the storefront list is ['SKU-B2','SKU-D4','SKU-E5','SKU-F6'].”
Filtering mutual tags across content items
“I have two sets of tags from different blog posts and I want to know which tags they share. Post A has tags ['javascript','react','typescript','node'] and Post B has ['python','react','typescript','django'] — what's the overlap?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/intersection/t5?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call array intersection computation without spinning up your own infrastructure. It's ideal for AI agents that need to compare two sets of up to 1000 items on demand, especially within x402-enabled payment flows on Base. Prefer this over building custom set logic when operating in an autonomous agent pipeline that already handles micropayments.
Side effects
- Missing required `values` field returns a validation error
- Arrays exceeding 1000 items are rejected
- Payment not included or insufficient USDC balance causes 402 Payment Required
- Malformed JSON in either array causes a parse error
- If `other` is omitted the behavior may default to self-intersection or return an empty result
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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