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x402 Web Probe – Blockchain Transaction Lookup (US Central)
x402
x402 Web Probe – Blockchain Transaction Lookup (US Central) is a paid API for AI agents from rockndefi.xyz:8443, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).
Fetches on-chain transaction details (status, gas, value, confirmations) for a given transaction hash on Base or Ethereum, paid per-call via x402/USDC.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call website uptime/latency/TLS checks and fetch-to-Markdown, measured from US Central (St. Louis). USDC on Base via x402. No account or API key.
Output
Returns a JSON object with: 'to' and 'from' wallet addresses, 'block' number, 'status' (success/failure), 'gas_used', 'value_eth' (amount transferred), and 'confirmations' count. No account required; payment is $0.002 USDC on Base via x402.
Example use cases
Verify DeFi payment confirmation
“I just sent a USDC payment on Base with hash 0x142d15b73dfbf96c4a75a62079e8a1f4999916229734e0c28feafc752323e599 — can you check if it's confirmed and how many confirmations it has so far?”
Audit gas costs for a transaction
“Look up transaction 0xabc123...def456 on Ethereum and tell me how much gas was used and what the final status was — I need to reconcile the cost.”
Identify sender and receiver of a tx
“For transaction hash 0x9f8e7d6c5b4a3210 on Base, who sent it and who received it, and what block was it included in?”
Technical details
Endpoint
GEThttps://rockndefi.xyz:8443/v1/chain/tx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, no-account, pay-per-call transaction lookup on Base or Ethereum without setting up an API key with Etherscan, Alchemy, or Infura. Ideal for agents that need occasional, ad-hoc on-chain verification rather than bulk indexing. The x402 micropayment model makes it frictionless for low-frequency use.
Side effects
- Invalid or malformed transaction hash returns an error
- Unsupported chain value (not 'base' or 'ethereum') causes rejection
- Transaction not yet indexed returns empty or pending state
- Network connectivity issues from US Central node may cause timeouts
- x402 payment failure results in HTTP 402 and no data returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "0x...",
"from": "0x...",
"block": 36000000,
"status": "success",
"gas_used": "52000",
"value_eth": "0",
"confirmations": 12
}
}Tags
x402
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