eth_sendRawTransactionSync

Submits a signed transaction and synchronously waits for it to be included in a block, returning the full transaction receipt. Unlike eth_sendRawTransaction, which returns only the transaction hash immediately, this method blocks until the transaction is executed and returns the complete receipt in a single call.

This is a Monad-specific method based on EIP-7966. It eliminates the need to poll with eth_getTransactionReceipt after submission. On Monad, transactions achieve sub-second confirmation due to the chain's architecture, making synchronous receipt return practical.

This method will use 80 Compute Units.

---

Reference: Here

Parameters

1. DATA - The signed transaction data.

params: [
  "0xf86c0a8502540be400825208940123456789abcdef0123456789abcdef0123456789880de0b6b3a764000080820a96a0a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1a0b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2",
]

Returns

A transaction receipt object with the following fields:

• blockHash - DATA, 32 Bytes - hash of the block containing this transaction.

• blockNumber - QUANTITY - block number where this transaction was included.

• contractAddress - DATA, 20 Bytes - the contract address created, if the transaction was a contract creation, otherwise null.

• cumulativeGasUsed - QUANTITY - total amount of gas used when this transaction was executed in the block.

• effectiveGasPrice - QUANTITY - the actual gas price paid per unit of gas.

• from - DATA, 20 Bytes - address of the sender.

• gasUsed - QUANTITY - amount of gas used by this specific transaction alone.

• logs - Array - array of log objects generated by this transaction.

• logsBloom - DATA, 256 Bytes - bloom filter for light clients to quickly retrieve related logs.

• status - QUANTITY - 0x1 for success, 0x0 for failure.

• to - DATA, 20 Bytes - address of the receiver, null for contract creation transactions.

• transactionHash - DATA, 32 Bytes - hash of the transaction.

• transactionIndex - QUANTITY - index position of the transaction in the block.

• type - QUANTITY - transaction type (0x0 for legacy, 0x2 for EIP-1559, etc.).

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0xc41f04c4ea63187020ad2c487603e30593f4160e5bc78ffca276413686783569",
    "blockNumber": "0x170d0ca",
    "contractAddress": null,
    "cumulativeGasUsed": "0x5208",
    "effectiveGasPrice": "0x2540be400",
    "from": "0x1234567890abcdef1234567890abcdef12345678",
    "gasUsed": "0x5208",
    "logs": [],
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "status": "0x1",
    "to": "0x0123456789abcdef0123456789abcdef01234567",
    "transactionHash": "0xbf93ff41b38fa5e9d0534e462c224e5ad65a1eb7ad7d4e569c98ad94a2c33471",
    "transactionIndex": "0x0",
    "type": "0x2"
  }
}

mainnet

curl https://mainnet.monad.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_sendRawTransactionSync","params":["0xSIGNED_TX_DATA"],"id":1}'

testnet