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SameDayDesk Settlement Proof Verifier
x402
SameDayDesk Settlement Proof Verifier is a paid API for AI agents from agents.samedaydesk.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Verifies and returns cryptographic proof that a specific on-chain USDC payment on Base mainnet was successfully settled, including transaction details and transfer confirmation.
Price / call$0.005
Success—
StatusUnknown
How this service works
Deterministic agent APIs for web and company intelligence, repository security, agent-work economics, machine-service discoverability, payment preflight and settlement proof, wallet context, and Morpho decision evidence. Pay per call through Base x402 or native MPP, with a Circle Gateway Nanopayments path for gasless batched USDC.
Output
Returns a JSON object with a top-level 'ok' flag, asset details (USDC on Base), the original request parameters (payer, recipient, amount, tx hash), a 'decision' field ('verified' or otherwise), a 'settlement' block with observed vs expected amounts and transfer counts, a 'transaction' block with status/block number/timestamp, a 'boundary' block clarifying data access scope, and a 'findings' array for any anomalies. Timestamp of the check is also included.
Example use cases
Confirm agent micropayment receipt
“I just made a 0.005 USDC pay-per-call payment to the SameDayDesk gateway on Base — transaction hash is 0xcfcbb3...a8987. Can you pull the settlement proof and confirm it was received by 0x8904...3Cee?”
Audit x402 payment for compliance log
“For our records, get me a verified settlement proof for the x402 payment where 0x990C...7f17 sent 5000 atomic USDC units on Base mainnet in transaction 0xcfcbb3...a8987 — I need the block number, timestamp, and a verified decision.”
Resolve disputed machine-to-machine transfer
“There's a dispute about whether our agent's USDC payment actually landed on Base. Can you check the settlement proof for tx hash 0xcfcbb3...a8987 and tell me if exactly one transfer went to the right recipient with the correct amount?”
Technical details
Endpoint
GEThttps://agents.samedaydesk.com/commerce/settlement-proofWhen to prefer
Use this endpoint when an AI agent or automated system needs cryptographic, deterministic proof that a specific on-chain USDC payment on Base mainnet completed successfully — particularly for x402 or MPP pay-per-call flows where auditability matters. Prefer this over general blockchain explorers when you need a structured, machine-readable settlement verdict with boundary metadata (confirming no private ledger access) suitable for automated trust decisions.
Side effects
- Transaction hash not found on Base mainnet — returns error or unverified decision
- Payer or recipient address mismatch — findings array populated with discrepancy details
- Incorrect USDC amount transferred — verified field returns false
- Transaction still pending — block confirmation not yet available
- Invalid wallet address format — request rejected
- Payment to wrong recipient — recipientTransferCount mismatch flagged in findings
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"asset": {
"symbol": "USDC",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"decimals": 6
},
"chain": {
"id": 8453,
"name": "Base mainnet",
"network": "eip155:8453"
},
"product": "samedaydesk-base-usdc-settlement-proof",
"request": {
"payer": "0x990C...7f17",
"recipient": "0x8904dF3DE6DFEe6a7C8cc38619d2f17806213Cee",
"amountAtomic": "5000",
"transactionHash": "0xcfcbb3...a8987"
},
"version": "1.0.0",
"boundary": {
"source": "public Base mainnet receipt and logs",
"walletAccessed": false,
"privateLedgerRead": false,
"executionAuthorized": false,
"auditedTransactionModified": false
},
"decision": "verified",
"findings": [],
"checkedAt": "2026-08-11T08:30:00.000Z",
"settlement": {
"observed": {
"payer": "0x990C...7f17",
"recipient": "0x8904dF3DE6DFEe6a7C8cc38619d2f17806213Cee",
"amountUsdc": "0.005",
"amountAtomic": "5000"
},
"verified": true,
"exactTransferCount": 1,
"recipientTransferCount": 1
},
"transaction": {
"hash": "0xcfcbb3...a8987",
"status": "success",
"blockNumber": "49823378",
"blockTimestamp": "2026-08-11T08:15:03.000Z"
}
}
}Tags
x402
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