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Nightshift USDC Transfer Verification
x402
Nightshift USDC Transfer Verification is a paid API for AI agents from 103-119-2-176.sslip.io:8445, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-31).
Verifies a Base USDC on-chain transfer by transaction hash, returning sender address, amount, block number, and replay-attack guard status.
Price / call$0.05
Success—
StatusUnknown
How this service works
Pay-per-call Base USDC transfer verification over x402 (exact scheme). POST a tx hash, get on-chain verified sender/amount/block plus replay guard.
Output
A JSON object containing the verified sender wallet address (from), the block number the transaction was included in (block), a boolean verified flag indicating on-chain confirmation and replay-guard status, and the USDC amount transferred (amount_usdc as a decimal string).
Example use cases
Payment gate before service delivery
“I just got a tx hash from a customer claiming they paid 2 USDC on Base — can you verify it on-chain, confirm the sender and amount, and check it hasn't been replayed before I unlock their access?”
Automated invoice reconciliation
“Check this Base USDC transaction hash 0xdeadbeef... and tell me the exact amount sent, who sent it, and which block it landed in so I can match it against our invoice #4421.”
Fraud and double-spend detection
“Has this transaction hash 0x9f3c... already been used to claim a reward? I need the on-chain verified sender and amount, plus confirmation there's no replay attempt.”
Technical details
Endpoint
POSThttps://103-119-2-176.sslip.io:8445/v1/verify-payment?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative, on-chain verification of a specific Base USDC transfer and require replay-attack protection — especially in pay-per-access or x402-gated workflows where double-spend prevention is critical. Prefer it over off-chain payment webhooks or self-built RPC calls when you want a single-call answer with sender, amount, block, and replay guard bundled together.
Side effects
- Invalid or malformed tx hash returns an error or verified:false
- Transaction not yet confirmed on Base returns unverified status
- Replay attack detected returns verified:false with replay flag
- Network or RPC timeout may cause delayed response
- Hash for a non-USDC or non-Base transaction may return incorrect or null amount
Output
Schema · Response
{
"type": "json",
"example": {
"from": "0x…",
"block": 53265431,
"verified": true,
"amount_usdc": "2.0"
}
}Tags
x402
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