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OP Mainnet Transaction Lookup
x402
OP Mainnet Transaction Lookup is a paid API for AI agents from onchaincheck.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).
Returns a human-readable summary of an OP Mainnet transaction including status, block, sender/recipient, ETH value, gas, method selector, and decoded ERC-20 token transfers.
Price / call$0.005
Success—
StatusUnknown
How this service works
Human-readable summary of a OP Mainnet transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts.
Output
A JSON object containing the transaction hash, chain identifier, success/failure status, block number, timestamp, from/to addresses, ETH value transferred, gas used, fee in ETH, method selector, native symbol, contract created (if any), and an array of decoded ERC-20 token transfers each with from/to addresses, token contract address, symbol, raw amount, and human-readable amount.
Example use cases
Verify a DeFi swap on Optimism
“I just did a swap on Optimism — can you check transaction 0x7fe4cdd3b21df2ea239247f074de5c417fca54f3a59200b0ebc25fd67850fc91 and confirm it went through, what USDC amounts moved, and what the gas fee was?”
Audit a payment sent via OP Mainnet
“Someone says they sent me a payment on Optimism with hash 0x7fe4cdd3b21df2ea239247f074de5c417fca54f3a59200b0ebc25fd67850fc91 — can you pull up the transaction details and tell me the sender, recipient, amount, and whether it succeeded?”
Debug a failed Optimism transaction
“My transaction on OP Mainnet with hash 0x7fe4cdd3b21df2ea239247f074de5c417fca54f3a59200b0ebc25fd67850fc91 might have failed — can you check the status, which block it landed in, and how much gas was consumed?”
Technical details
Endpoint
GEThttps://onchaincheck.dev/optimism/tx?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a complete, human-readable breakdown of a specific OP Mainnet transaction — especially when decoded ERC-20 token transfer details (symbols, amounts, parties) are needed alongside gas and status information. Prefer this over raw RPC calls or block explorers when you need structured JSON output ready for agent consumption without manual ABI decoding.
Side effects
- Invalid or malformed transaction hash (must be 0x-prefixed 64 hex chars) returns an error
- Transaction hash not found on OP Mainnet returns not-found error
- Network or RPC timeout results in a failure response
- Transaction is pending and not yet indexed may return empty or partial data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "0x7Ca0b75E67E33c0014325B739A8d019C4FE445F0",
"fee": "0.0000051521641113",
"from": "0xdC45DB93c3fC37272f40812bBa9C4Bad91344b46",
"hash": "0x7fe4cdd3b21df2ea239247f074de5c417fca54f3a59200b0ebc25fd67850fc91",
"chain": "optimism",
"value": "0",
"status": "success",
"gasUsed": 1030371,
"timestamp": "2026-10-22T15:30:05.000Z",
"blockNumber": 158542114,
"nativeSymbol": "ETH",
"methodSelector": "0x4e309099",
"tokenTransfers": [
{
"to": "0x01F8cDFb1694eA8fE4ED6c38a0fD78d1188E03F4",
"raw": "1959750",
"from": "0x66753c4e3fC84f1eD0e3C267C927284E9d90C572",
"token": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"amount": "1.95975",
"symbol": "USDC"
},
{
"to": "0x50A233C4a0Bb1d7124b0224880037d35767a501C",
"raw": "1959750",
"from": "0x01F8cDFb1694eA8fE4ED6c38a0fD78d1188E03F4",
"token": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"amount": "1.95975",
"symbol": "USDC"
}
],
"contractCreated": null
}
}Tags
x402
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