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Delx Commerce Set Difference API
x402
Delx Commerce Set Difference API is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes the set difference (elements in array A that are not in array B) and returns the unique items and count
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing the count of differing elements, an array of items present in array A but not in array B, and a schema identifier string ('delx/util-set-diff/v1') for verifying the response format.
Example use cases
Find new customers since last week
“I have last week's customer ID list [101, 102, 103, 104] and today's full list [101, 102, 103, 104, 105, 106]. Which customer IDs are new this week — in today's list but not last week's?”
Identify unassigned tasks in project
“Here are all the tasks in our sprint: ['design', 'build', 'test', 'deploy', 'review']. And here are the ones already assigned: ['build', 'test']. Which tasks still haven't been assigned to anyone?”
Filter out already-seen recommendations
“I have a list of recommended products [42, 17, 88, 5, 63] and a list of products the user has already seen [17, 63]. Give me only the recommendations the user hasn't seen yet.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/set-diff?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap ($0.001 USDC), pay-per-use set difference computation with no signup or account required. Ideal for AI agents that need to compute array differences programmatically as part of a workflow without spinning up custom code or using heavier data processing services. Best when you want verifiable, on-chain payment and guaranteed delivery via the x402 protocol.
Side effects
- Invalid or missing array inputs returns an error
- Non-array types passed as inputs may cause a 400 error
- Payment failure via x402 protocol results in a 402 response with payment details
- Empty array A returns count 0 and empty items array
- Large arrays may time out depending on server limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| a | array | Input field: a. |
| b | array | Input field: b. |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 2,
"items": [
1,
3
],
"schema": "delx/util-set-diff/v1"
}
}Tags
x402
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