Back to Browse
JSON Array Difference
x402
JSON Array Difference is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Computes the set difference of two integer arrays, returning elements present in the left array but absent from the right array.
Price / call$0.001
Success—
StatusUnknown
How this service works
JSON Array Difference: JSON Array Difference returns left-side values absent from the right JSON array from bounded caller-supplied values without an external provider. Call JSON Array Difference before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for JSON Array Difference as versioned deterministic JSON. Price: $0.001 USDC via…
Output
Returns a versioned deterministic JSON object containing the array of integers present in the left input but absent from the right input, along with counts of differing elements and normalized values. The result is processed in-memory without data retention.
Example use cases
Detecting missing IDs before batch upload
“I have a list of product IDs I want to submit: [101, 102, 103, 104, 105], and the downstream system already has [102, 104]. Can you figure out which IDs I still need to send?”
Reconciling two sets of transaction codes
“My left list of transaction codes is [10, 20, 30, 40, 50] and the confirmed list is [20, 40]. Which codes from my left list haven't been confirmed yet?”
Filtering fulfilled order items
“Here are the items I ordered: [7, 14, 21, 28, 35], and the fulfilled items are [14, 28]. Tell me which ordered items are still outstanding.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/json-array-differenceWhen to prefer
Use this endpoint when you need a fast, deterministic, in-memory set difference computation on bounded integer arrays (up to 256 items each) without standing up your own compute or relying on a general-purpose code executor. Ideal for pre-flight checks before handing structured data to downstream tools with strict contracts, reconciliation tasks, or filtering already-processed IDs from a pending batch.
Side effects
- Input arrays exceed 256 items — request rejected
- Non-integer values in arrays — schema validation failure
- Malformed JSON body — 400 bad request
- Payment not included or insufficient — 402 payment required
- Empty arrays provided — returns empty difference with zero count
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
Reviews
No reviews yet. Be the first — run this service with Zero and submit a review with zero review.
How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"