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Delx Commerce — JSON Array Difference
x402
Delx Commerce — JSON Array Difference 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 between two integer arrays (elements in left but not in right), returning the count and items.
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 with the set difference result: an array of integers present in 'left' but not in 'right', along with a count of those items, the operation schema identifier, a pass/fail status, and an evidence block containing a SHA-256 hash of the input and confirmation that no data was retained or external calls were made.
Example use cases
Deduplicating new user IDs against existing ones
“I have a list of incoming user IDs [101, 102, 103, 104] and an existing set [102, 104] — which IDs are genuinely new and not already in our system?”
Finding unprocessed task IDs in a pipeline
“My job queue has tasks [5, 10, 15, 20, 25] and the completed tasks are [10, 20] — tell me which task IDs still need to be processed.”
Comparing product catalog updates
“I have an updated product list with IDs [200, 201, 202, 203] and my current catalog has [201, 203] — which product IDs are new additions I don't have yet?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/json-array-difference?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a simple, verifiable, pay-per-call set difference computation on integer arrays without requiring any account setup. Ideal for AI agents that need on-demand, auditable arithmetic operations with cryptographic proof of non-retention, especially in cost-sensitive or trustless contexts where USDC micropayments per result are acceptable.
Side effects
- Array exceeds 256-item maxItems limit — request rejected
- Non-integer values in arrays — schema validation failure
- Missing 'left' or 'right' fields — malformed request error
- Payment not provided or insufficient USDC — 402 payment required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| left | array | Left supplied to JSON Array Difference; used only for this bounded calculation and processed in memory without retention. |
| right | array | Right supplied to JSON Array Difference; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"count": 2,
"items": [
1,
3
]
},
"schema": "delx/util-json-array-difference/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "dfa0bc27e93c4ecbb96000cad1ce90953df1aea4a2be0fa5caddbb32e50aa899",
"external_calls": 0
},
"operation": "data_batch:json_array_difference"
}
}Tags
x402
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