diff --git a/etherlink/bin_node/config/configuration.ml b/etherlink/bin_node/config/configuration.ml
index 54648722b211fd260eee105da536e14fe3ce18f8..23c8751053e565eda8d76722fd2dbb6ddda82048 100644
--- a/etherlink/bin_node/config/configuration.ml
+++ b/etherlink/bin_node/config/configuration.ml
@@ -45,6 +45,7 @@ type experimental_features = {
   overwrite_simulation_tick_limit : bool;
   garbage_collector : garbage_collector option;
   next_wasm_runtime : bool;
+  enable_websocket : bool;
 }
 
 type sequencer = {
@@ -137,6 +138,7 @@ let default_experimental_features =
     overwrite_simulation_tick_limit = false;
     garbage_collector = None;
     next_wasm_runtime = false;
+    enable_websocket = false;
   }
 
 let default_data_dir = Filename.concat (Sys.getenv "HOME") ".octez-evm-node"
@@ -687,6 +689,7 @@ let experimental_features_encoding =
            overwrite_simulation_tick_limit;
            garbage_collector;
            next_wasm_runtime;
+           enable_websocket;
          } ->
       ( drop_duplicate_on_injection,
         enable_send_raw_transaction,
@@ -694,14 +697,16 @@ let experimental_features_encoding =
         block_storage_sqlite3,
         overwrite_simulation_tick_limit,
         garbage_collector,
-        next_wasm_runtime ))
+        next_wasm_runtime,
+        enable_websocket ))
     (fun ( drop_duplicate_on_injection,
            enable_send_raw_transaction,
            node_transaction_validation,
            block_storage_sqlite3,
            overwrite_simulation_tick_limit,
            garbage_collector,
-           next_wasm_runtime ) ->
+           next_wasm_runtime,
+           enable_websocket ) ->
       {
         drop_duplicate_on_injection;
         enable_send_raw_transaction;
@@ -710,8 +715,9 @@ let experimental_features_encoding =
         overwrite_simulation_tick_limit;
         garbage_collector;
         next_wasm_runtime;
+        enable_websocket;
       })
-    (obj7
+    (obj8
        (dft
           ~description:
             "Request the rollup node to filter messages it has already \
@@ -756,6 +762,11 @@ let experimental_features_encoding =
             "Enable or disable the experimental WASM runtime that is expected \
              to replace the Smart Rollup’s Fast Exec runtime"
           bool
+          false)
+       (dft
+          "enable_websocket"
+          ~description:"Enable or disable the experimental websocket server"
+          bool
           false))
 
 let proxy_encoding =
diff --git a/etherlink/bin_node/config/configuration.mli b/etherlink/bin_node/config/configuration.mli
index d20e1c7339a79c2ee1907a1554d9259cce91a44c..e7ac1e4a7a4391fa28a66479456ea429a4a8f74f 100644
--- a/etherlink/bin_node/config/configuration.mli
+++ b/etherlink/bin_node/config/configuration.mli
@@ -64,6 +64,7 @@ type experimental_features = {
   overwrite_simulation_tick_limit : bool;
   garbage_collector : garbage_collector option;
   next_wasm_runtime : bool;
+  enable_websocket : bool;
 }
 
 type sequencer = {
diff --git a/etherlink/bin_node/main.ml b/etherlink/bin_node/main.ml
index 73f19c486625676bb2c6de4a49e1547c6df66b38..af2338deeb919b3a156c0fa8b31b1e2ec70cd009 100644
--- a/etherlink/bin_node/main.ml
+++ b/etherlink/bin_node/main.ml
@@ -678,6 +678,13 @@ let snapshot_file_arg =
        is based on the snapshot information."
     Params.string
 
+(* TODO: https://gitlab.com/tezos/tezos/-/issues/7591
+   Remove this whenever we have an experimental websocket server ready to
+   be tested. *)
+let fail_if_websocket_is_enabled ~config =
+  if config.experimental_features.enable_websocket then
+    Stdlib.failwith "The experimental websocket server is not implemented yet."
+
 let start_proxy ~data_dir ~keep_alive ?rpc_addr ?rpc_port ?rpc_batch_limit
     ?cors_origins ?cors_headers ?log_filter_max_nb_blocks
     ?log_filter_max_nb_logs ?log_filter_chunk_size ?rollup_node_endpoint
@@ -708,6 +715,7 @@ let start_proxy ~data_dir ~keep_alive ?rpc_addr ?rpc_port ?rpc_batch_limit
       ~verbose
       ()
   in
+  fail_if_websocket_is_enabled ~config ;
   (* We patch [config] to take into account the proxy-specific argument
      [--read-only]. *)
   let config =
@@ -815,6 +823,7 @@ let start_sequencer ?password_filename ~wallet_dir ~data_dir ?rpc_addr ?rpc_port
       ~finalized_view
       ()
   in
+  fail_if_websocket_is_enabled ~config:configuration ;
   let*! () =
     let open Tezos_base_unix.Internal_event_unix in
     let config =
@@ -896,6 +905,7 @@ let start_threshold_encryption_sequencer ?password_filename ~wallet_dir
       ~finalized_view
       ()
   in
+  fail_if_websocket_is_enabled ~config:configuration ;
   let*! () =
     let open Tezos_base_unix.Internal_event_unix in
     let config =
@@ -1090,6 +1100,7 @@ let start_observer ~data_dir ~keep_alive ?rpc_addr ?rpc_port ?rpc_batch_limit
       ~finalized_view
       ()
   in
+  fail_if_websocket_is_enabled ~config ;
   let*! () =
     let open Tezos_base_unix.Internal_event_unix in
     let config =
diff --git a/etherlink/tezt/tests/expected/evm_sequencer.ml/Alpha- Configuration RPC.out b/etherlink/tezt/tests/expected/evm_sequencer.ml/Alpha- Configuration RPC.out
index ac9e05c3d0fd0819c03b9cbe86ca2e9d978f7b15..03679b98c07fac8da6ad06705d0b742cf88f3bc1 100644
--- a/etherlink/tezt/tests/expected/evm_sequencer.ml/Alpha- Configuration RPC.out	
+++ b/etherlink/tezt/tests/expected/evm_sequencer.ml/Alpha- Configuration RPC.out	
@@ -16,7 +16,8 @@
     "node_transaction_validation": true,
     "block_storage_sqlite3": true,
     "overwrite_simulation_tick_limit": false,
-    "next_wasm_runtime": true
+    "next_wasm_runtime": true,
+    "enable_websocket": false
   },
   "proxy": {
     "ignore_block_param": false
@@ -65,7 +66,8 @@
     "node_transaction_validation": true,
     "block_storage_sqlite3": true,
     "overwrite_simulation_tick_limit": false,
-    "next_wasm_runtime": true
+    "next_wasm_runtime": true,
+    "enable_websocket": false
   },
   "proxy": {
     "ignore_block_param": false
@@ -107,7 +109,8 @@
     "node_transaction_validation": true,
     "block_storage_sqlite3": true,
     "overwrite_simulation_tick_limit": false,
-    "next_wasm_runtime": true
+    "next_wasm_runtime": true,
+    "enable_websocket": false
   },
   "proxy": {
     "evm_node_endpoint": "hidden",
diff --git a/etherlink/tezt/tests/expected/evm_sequencer.ml/EVM Node- describe config.out b/etherlink/tezt/tests/expected/evm_sequencer.ml/EVM Node- describe config.out
index 4f23ffedb396f8884cec9c7bcd0a40d2dbe86997..49e0fb4ccea94786648ded8f0e4504c8b601c47b 100644
--- a/etherlink/tezt/tests/expected/evm_sequencer.ml/EVM Node- describe config.out	
+++ b/etherlink/tezt/tests/expected/evm_sequencer.ml/EVM Node- describe config.out	
@@ -146,7 +146,10 @@
       "next_wasm_runtime"?:
         boolean
         /* Enable or disable the experimental WASM runtime that is expected
-           to replace the Smart Rollup’s Fast Exec runtime */ },
+           to replace the Smart Rollup’s Fast Exec runtime */,
+      "enable_websocket"?:
+        boolean
+        /* Enable or disable the experimental websocket server */ },
   "proxy"?:
     { "finalized_view"?:
         boolean