diff --git a/Cargo.lock b/Cargo.lock
index 0a2a51eb6..8984f0280 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6916,6 +6916,7 @@ dependencies = [
  "reth-primitives-traits",
  "reth-provider",
  "reth-revm",
+ "reth-rpc-eth-api",
  "reth-rpc-layer",
  "reth-testing-utils",
  "reth-transaction-pool",
diff --git a/crates/op-rbuilder/Cargo.toml b/crates/op-rbuilder/Cargo.toml
index 16ac91cbb..fd73b3d8e 100644
--- a/crates/op-rbuilder/Cargo.toml
+++ b/crates/op-rbuilder/Cargo.toml
@@ -40,6 +40,8 @@ reth-payload-util.workspace = true
 reth-transaction-pool.workspace = true
 reth-testing-utils.workspace = true
 reth-optimism-forks.workspace = true
+reth-rpc-eth-api.workspace = true
+
 alloy-primitives.workspace = true
 alloy-consensus.workspace = true
 alloy-eips.workspace = true
diff --git a/crates/op-rbuilder/src/engine_api_ext.rs b/crates/op-rbuilder/src/engine_api_ext.rs
new file mode 100644
index 000000000..ca0c214d2
--- /dev/null
+++ b/crates/op-rbuilder/src/engine_api_ext.rs
@@ -0,0 +1,56 @@
+//! Odyssey rpc logic.
+//!
+//! `eth_` namespace overrides:
+//!
+//! - `eth_getProof` will _ONLY_ return the storage proofs _WITHOUT_ an account proof _IF_ targeting
+//!   the withdrawal contract. Otherwise, it fallbacks to default behaviour.
+
+use alloy_eips::BlockId;
+use alloy_primitives::{Address, B256};
+use alloy_rpc_types_engine::{ExecutionPayloadV3, PayloadStatus};
+use alloy_rpc_types_eth::EIP1186AccountProofResponse;
+use jsonrpsee::{
+    core::{async_trait, RpcResult},
+    proc_macros::rpc,
+};
+use reth_rpc_eth_api::helpers::FullEthApi;
+use tracing::trace;
+
+#[rpc(server, client, namespace = "eth")]
+pub trait EthApiOverride {
+    #[method(name = "newPayloadV3")]
+    async fn new_payload_v3(
+        &self,
+        payload: ExecutionPayloadV3,
+        versioned_hashes: Vec<B256>,
+        parent_beacon_block_root: B256,
+    ) -> RpcResult<PayloadStatus>;
+}
+
+/// Implementation of the `eth_` namespace override
+#[derive(Debug)]
+pub struct EthApiExt<Eth> {
+    eth_api: Eth,
+}
+
+impl<E> EthApiExt<E> {
+    /// Create a new `EthApiExt` module.
+    pub const fn new(eth_api: E) -> Self {
+        Self { eth_api }
+    }
+}
+
+#[async_trait]
+impl<Eth> EthApiOverrideServer for EthApiExt<Eth>
+where
+    Eth: FullEthApi + Send + Sync + 'static,
+{
+    async fn new_payload_v3(
+        &self,
+        payload: ExecutionPayloadV3,
+        versioned_hashes: Vec<B256>,
+        parent_beacon_block_root: B256,
+    ) -> RpcResult<PayloadStatus> {
+        panic!("Not implemented");
+    }
+}
diff --git a/crates/op-rbuilder/src/main.rs b/crates/op-rbuilder/src/main.rs
index 62eea9f4a..a76cf2975 100644
--- a/crates/op-rbuilder/src/main.rs
+++ b/crates/op-rbuilder/src/main.rs
@@ -5,6 +5,7 @@ use reth_optimism_cli::{chainspec::OpChainSpecParser, Cli};
 use reth_optimism_node::node::OpAddOnsBuilder;
 use reth_optimism_node::OpNode;
 
+use crate::engine_api_ext::EthApiOverrideServer;
 #[cfg(feature = "flashblocks")]
 use payload_builder::CustomOpPayloadBuilder;
 #[cfg(not(feature = "flashblocks"))]
@@ -12,6 +13,8 @@ use payload_builder_vanilla::CustomOpPayloadBuilder;
 
 /// CLI argument parsing.
 pub mod args;
+mod engine_api_ext;
+use engine_api_ext::EthApiExt;
 pub mod generator;
 #[cfg(test)]
 mod integration;
@@ -60,6 +63,13 @@ fn main() {
 
                     Ok(())
                 })
+                .extend_rpc_modules(move |ctx| {
+                    ctx.modules.replace_configured(
+                        EthApiExt::new(ctx.registry.eth_api().clone()).into_rpc(),
+                    )?;
+
+                    Ok(())
+                })
                 .launch()
                 .await?;