blockchain-kit-sdk/com.cramium.blockchain.kit.blockchain.evm/EthereumRpcClient/getL1FeeFromGasPriceOracle

getL1FeeFromGasPriceOracle

open suspend fun getL1FeeFromGasPriceOracle(unsignedTxBytes: ByteArray): BigInteger?

Get L1 data fee from OP Stack GasPriceOracle predeploy (getL1Fee(bytes)). Uses the RLP-encoded unsigned transaction bytes as input; the oracle computes the L1 portion of the fee based on calldata size. Returns null on any failure.

Return

L1 fee in wei, or null if call fails or chain is not OP Stack

Parameters

unsignedTxBytes

RLP-encoded unsigned tx (legacy or type-2) as used for signing