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Delx X402 Refund Receipt Check
x402
Delx X402 Refund Receipt Check 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).
Validates an X402 refund receipt object by checking its shape, required fields, and structural correctness without retaining any data.
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 indicating whether the receipt passed validation (status: pass/fail), whether the shape is valid (shape_valid: boolean), a list of any missing fields, the original receipt contents echoed back, evidence metadata including input SHA256 hash, a flag confirming no data was retained, and a count of zero external calls made — confirming purely in-memory processing.
Example use cases
Diagnosing a rejected refund receipt
“My X402 refund is failing — can you validate this receipt object and tell me which fields are missing or malformed? Receipt has refund_id 'refund-99', payment_id 'pay-42', amount_raw '5000', status 'queued'.”
Pre-flight check before submitting refund
“Before I submit this refund request on-chain, can you verify that my receipt object is properly shaped and has all the required X402 fields? I want to catch any issues now.”
Automated receipt audit in agent pipeline
“I'm building an agent that processes X402 refunds — can you run a structural check on each receipt coming through and flag any that are missing fields or have the wrong shape?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/x402-refund-receipt-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, privacy-preserving structural check on an X402 refund receipt before submitting or processing it — especially in agentic pipelines where you want cryptographic evidence (SHA256 of input) that the data was processed in-memory without retention. Prefer this over manual schema validation when you need verifiable, auditable confirmation of receipt shape correctness in a pay-per-use model with no signup required.
Side effects
- Receipt object exceeds 128 properties (maxProperties limit), causing rejection
- Missing or malformed receipt object in request body returns validation error
- Malformed JSON in request body causes parse failure
- shape_valid false with populated missing_fields list when required receipt fields are absent
- Network or service unavailability returns HTTP error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| receipt | object | Receipt supplied to X402 Refund Receipt Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"receipt": {
"status": "queued",
"refund_id": "refund-1",
"amount_raw": "1000",
"payment_id": "pay-1"
},
"shape_valid": true,
"missing_fields": []
},
"schema": "delx/util-x402-refund-receipt-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "eed8a44348546c38e110e86becc0cf20609c4043c2d9579d6b2d25468d2f7566",
"external_calls": 0
},
"operation": "delivery_contract:x402_refund_receipt_check"
}
}Tags
x402
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