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Delx Base Settlement Receipt Check
x402
Delx Base Settlement Receipt Check 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).
Validates a Base blockchain settlement receipt against expected recipient address and amount, returning a structured pass/fail verification result.
Price / call$0.001
Success—
StatusUnknown
How this service works
Base Settlement Receipt Check: Base Settlement Receipt Check checks caller-supplied receipt chain, status, recipient, and raw amount from bounded caller-supplied values without an external provider. Call Base Settlement Receipt Check before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for Base Settlement Receipt Check as versi…
Output
Returns a JSON object with a 'status' field ('pass'/'fail'), a 'result' object containing boolean flags for chain_match, amount_match, recipient_match, status_success, and onchain_verified, plus an 'evidence' block with the input SHA-256 hash, retained flag (always false), and external_calls count. Also includes the operation name and schema version.
Example use cases
Pre-flight payment check before service delivery
“Before I release the API response to that agent, verify this receipt object against recipient 0xDEF...456 and raw amount 500000 — tell me if chain, recipient, and amount all pass so I know it's safe to proceed.”
Auditing x402 agent payment receipts
“I've collected a bunch of x402 payment receipts from my agent fleet — can you check this one receipt against expected recipient 0x789...ABC and raw amount 2000000 to confirm it's legitimate and the amounts match?”
Validating settlement before releasing digital goods
“A customer just submitted a Base chain payment receipt — validate it against recipient address 0x111...222 and raw expected amount 750000 to confirm the payment is correct before I unlock their download.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/base-settlement-receipt-checkWhen to prefer
Use this endpoint when you need a fast, in-memory preflight check of a Base network settlement receipt without making external blockchain calls. Ideal for x402 payment workflows where you want to confirm recipient address and raw amount correctness before releasing a service or resource. Prefer this over a full on-chain verification when latency matters and you trust the receipt source enough for a preflight gate.
Side effects
- Mismatched receipt format or missing required fields returns validation failure
- Incorrect expected_recipient or expected_amount_raw causes match flags to return false
- Malformed address strings may cause recipient_match to be false even if payment was correct
- onchain_verified may return false if the service only performs preflight checks without querying the chain
- Exceeding maxProperties 128 on the receipt object may cause request rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| receipt | object | Receipt supplied to Base Settlement Receipt Check; used only for this bounded calculation and processed in memory without retention. |
| expected_recipient | string | Expected Recipient supplied to Base Settlement Receipt Check; used only for this bounded calculation and processed in memory without retention. |
| expected_amount_raw | string | Expected Amount Raw supplied to Base Settlement Receipt Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"chain_match": true,
"amount_match": true,
"status_success": true,
"recipient_match": true,
"onchain_verified": false
},
"schema": "delx/util-base-settlement-receipt-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "7f5a14a56828aeeef17308408fd528ebad754eaf15b74a541935ea910a050663",
"external_calls": 0
},
"operation": "evm_preflight:base_settlement_receipt_check"
}
}Tags
x402
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