diff --git a/crates/common/types/transaction.rs b/crates/common/types/transaction.rs
index d080b0d26cb..09c5727f234 100644
--- a/crates/common/types/transaction.rs
+++ b/crates/common/types/transaction.rs
@@ -7,7 +7,9 @@ use ethrex_crypto::keccak::keccak_hash;
 pub use mempool::MempoolTransaction;
 use rkyv::{Archive, Deserialize as RDeserialize, Serialize as RSerialize};
 use serde::{Serialize, ser::SerializeStruct};
-pub use serde_impl::{AccessListEntry, GenericTransaction, GenericTransactionError};
+pub use serde_impl::{
+    AccessListEntry, AuthorizationTupleEntry, GenericTransaction, GenericTransactionError,
+};
 
 /// The serialized length of a default eip1559 transaction
 pub const EIP1559_DEFAULT_SERIALIZED_LENGTH: usize = 15;
diff --git a/crates/l2/networking/rpc/clients.rs b/crates/l2/networking/rpc/clients.rs
index 386fd58b4a7..1f7273569b6 100644
--- a/crates/l2/networking/rpc/clients.rs
+++ b/crates/l2/networking/rpc/clients.rs
@@ -1,12 +1,17 @@
+use std::str::FromStr;
+
 use crate::l2::batch::RpcBatch;
+use bytes::Bytes;
 use ethrex_common::Address;
 use ethrex_common::H256;
 use ethrex_common::U256;
+use ethrex_common::types::{AuthorizationList, AuthorizationTupleEntry};
 use ethrex_l2_common::l1_messages::L1MessageProof;
 use ethrex_rpc::clients::eth::errors::GetL1BlobBaseFeeRequestError;
 use ethrex_rpc::clients::eth::errors::GetL1FeeVaultAddressError;
 use ethrex_rpc::clients::eth::errors::GetOperatorFeeError;
 use ethrex_rpc::clients::eth::errors::GetOperatorFeeVaultAddressError;
+use ethrex_rpc::clients::eth::errors::SendEthrexTransactionError;
 use ethrex_rpc::types::block_identifier::BlockIdentifier;
 use ethrex_rpc::{
     EthClient,
@@ -14,11 +19,15 @@ use ethrex_rpc::{
         EthClientError,
         eth::{
             RpcResponse,
-            errors::{GetBaseFeeVaultAddressError, GetBatchByNumberError, GetMessageProofError},
+            errors::{
+                GetBaseFeeVaultAddressError, GetBatchByNumberError, GetBatchNumberError,
+                GetMessageProofError,
+            },
         },
     },
     utils::RpcRequest,
 };
+use hex;
 use serde_json::json;
 
 pub async fn get_message_proof(
@@ -55,6 +64,27 @@ pub async fn get_batch_by_number(
     }
 }
 
+pub async fn get_batch_number(client: &EthClient) -> Result<u64, EthClientError> {
+    let request = RpcRequest::new("ethrex_batchNumber", None);
+
+    match client.send_request(request).await? {
+        RpcResponse::Success(result) => {
+            let batch_number_hex: String = serde_json::from_value(result.result)
+                .map_err(GetBatchNumberError::SerdeJSONError)
+                .map_err(EthClientError::from)?;
+            let hex_str = batch_number_hex
+                .strip_prefix("0x")
+                .unwrap_or(&batch_number_hex);
+            u64::from_str_radix(hex_str, 16)
+                .map_err(GetBatchNumberError::ParseIntError)
+                .map_err(EthClientError::from)
+        }
+        RpcResponse::Error(error_response) => {
+            Err(GetBatchNumberError::RPCError(error_response.error.message).into())
+        }
+    }
+}
+
 pub async fn get_base_fee_vault_address(
     client: &EthClient,
     block: BlockIdentifier,
@@ -139,3 +169,37 @@ pub async fn get_l1_blob_base_fee_per_gas(
         }
     }
 }
+
+pub async fn send_ethrex_transaction(
+    client: &EthClient,
+    to: Address,
+    data: Bytes,
+    authorization_list: Option<AuthorizationList>,
+) -> Result<H256, EthClientError> {
+    let authorization_list = authorization_list.map(|list| {
+        list.iter()
+            .map(AuthorizationTupleEntry::from)
+            .collect::<Vec<_>>()
+    });
+
+    let payload = json!({
+        "to": format!("{to:#x}"),
+        "data": format!("0x{}", hex::encode(data)),
+        "authorizationList": authorization_list,
+    });
+    let request = RpcRequest::new("ethrex_sendTransaction", Some(vec![payload]));
+
+    match client.send_request(request).await? {
+        RpcResponse::Success(result) => {
+            let tx_hash_str: String = serde_json::from_value(result.result)
+                .map_err(SendEthrexTransactionError::SerdeJSONError)
+                .map_err(EthClientError::from)?;
+            H256::from_str(&tx_hash_str)
+                .map_err(|e| SendEthrexTransactionError::ParseHashError(e.to_string()))
+                .map_err(EthClientError::from)
+        }
+        RpcResponse::Error(error_response) => {
+            Err(SendEthrexTransactionError::RPCError(error_response.error.message).into())
+        }
+    }
+}
diff --git a/crates/networking/rpc/clients/eth/errors.rs b/crates/networking/rpc/clients/eth/errors.rs
index 98b2d5febae..7210f15a72c 100644
--- a/crates/networking/rpc/clients/eth/errors.rs
+++ b/crates/networking/rpc/clients/eth/errors.rs
@@ -65,6 +65,8 @@ pub enum EthClientError {
     FailedToGetTxPool(#[from] TxPoolContentError),
     #[error("ethrex_getBatchByNumber request error: {0}")]
     GetBatchByNumberError(#[from] GetBatchByNumberError),
+    #[error("ethrex_batchNumber request error: {0}")]
+    GetBatchNumberError(#[from] GetBatchNumberError),
     #[error("ethrex_getBlobBaseFee request error: {0}")]
     GetBlobBaseFeeError(#[from] GetBlobBaseFeeRequestError),
     #[error("All RPC calls failed")]
@@ -83,6 +85,8 @@ pub enum EthClientError {
     GetL1FeeVaultAddressError(#[from] GetL1FeeVaultAddressError),
     #[error("ethrex_getL1BlobBaseFee request error: {0}")]
     GetL1BlobBaseFeeError(#[from] GetL1BlobBaseFeeRequestError),
+    #[error("ethrex_sendTransaction request error: {0}")]
+    SendEthrexTransactionError(#[from] SendEthrexTransactionError),
 }
 
 #[derive(Debug, thiserror::Error)]
@@ -327,6 +331,16 @@ pub enum GetBatchByNumberError {
     RPCError(String),
 }
 
+#[derive(Debug, thiserror::Error)]
+pub enum GetBatchNumberError {
+    #[error("{0}")]
+    SerdeJSONError(#[from] serde_json::Error),
+    #[error("{0}")]
+    RPCError(String),
+    #[error("{0}")]
+    ParseIntError(#[from] std::num::ParseIntError),
+}
+
 #[derive(Debug, thiserror::Error)]
 pub enum GetEthConfigError {
     #[error("{0}")]
@@ -374,3 +388,13 @@ pub enum GetL1BlobBaseFeeRequestError {
     #[error("{0}")]
     ParseIntError(#[from] std::num::ParseIntError),
 }
+
+#[derive(Debug, thiserror::Error)]
+pub enum SendEthrexTransactionError {
+    #[error("{0}")]
+    SerdeJSONError(#[from] serde_json::Error),
+    #[error("{0}")]
+    RPCError(String),
+    #[error("{0}")]
+    ParseHashError(String),
+}