# URL pointing to an L1 RPC provider MESSAGE_RELAYER__L1_RPC_PROVIDER= # URL pointing to an L2 RPC provider MESSAGE_RELAYER__L2_RPC_PROVIDER= # Private key for a wallet with ETH on L1 MESSAGE_RELAYER__L1_WALLET= # Optional, L2 block height to start relaying messages from (default is 0) MESSAGE_RELAYER__FROM_L2_TRANSACTION_INDEX=