diff --git a/src/main/protobuf/BUILD b/src/main/protobuf/BUILD
index 177d778bde7322..82e40cbb4c37c8 100644
--- a/src/main/protobuf/BUILD
+++ b/src/main/protobuf/BUILD
@@ -287,6 +287,11 @@ java_library_srcs(
     deps = [":bazel_output_service_java_proto"],
 )
 
+cc_proto_library(
+    name = "bazel_output_service_cc_proto",
+    deps = [":bazel_output_service_proto"],
+)
+
 proto_library(
     name = "bazel_output_service_rev2_proto",
     srcs = ["bazel_output_service_rev2.proto"],
@@ -300,15 +305,26 @@ java_proto_library(
     deps = [":bazel_output_service_rev2_proto"],
 )
 
+java_library_srcs(
+    name = "bazel_output_service_rev2_java_proto_srcs",
+    deps = [":bazel_output_service_rev2_java_proto"],
+)
+
+cc_proto_library(
+    name = "bazel_output_service_rev2_cc_proto",
+    deps = [":bazel_output_service_rev2_proto"],
+)
+
 java_grpc_library(
     name = "bazel_output_service_java_grpc",
     srcs = [":bazel_output_service_proto"],
     deps = [":bazel_output_service_java_proto"],
 )
 
-java_library_srcs(
-    name = "bazel_output_service_rev2_java_proto_srcs",
-    deps = [":bazel_output_service_rev2_java_proto"],
+cc_grpc_library(
+    name = "bazel_output_service_cc_grpc",
+    srcs = [":bazel_output_service_proto"],
+    deps = [":bazel_output_service_cc_proto"],
 )
 
 proto_library(
diff --git a/src/tools/remote/BUILD b/src/tools/remote/BUILD
index 2e25e9edb6c2f0..222fc3c473dcab 100644
--- a/src/tools/remote/BUILD
+++ b/src/tools/remote/BUILD
@@ -8,6 +8,7 @@ package(
 filegroup(
     name = "srcs",
     srcs = glob(["**"]) + [
+        "//src/tools/remote/src/main/cpp/testonly_output_service:srcs",
         "//src/tools/remote/src/main/java/com/google/devtools/build/remote/worker:srcs",
         "//src/tools/remote/src/test/java/com/google/devtools/build/remote/worker:srcs",
     ],
diff --git a/src/tools/remote/src/main/cpp/testonly_output_service/BUILD b/src/tools/remote/src/main/cpp/testonly_output_service/BUILD
new file mode 100644
index 00000000000000..9d8ef25c4d9d85
--- /dev/null
+++ b/src/tools/remote/src/main/cpp/testonly_output_service/BUILD
@@ -0,0 +1,25 @@
+package(
+    default_applicable_licenses = ["//:license"],
+    default_visibility = ["//:__subpackages__"],
+)
+
+filegroup(
+    name = "srcs",
+    srcs = glob(["**"]),
+    visibility = ["//src:__subpackages__"],
+)
+
+cc_binary(
+    name = "testonly_output_service",
+    srcs = [
+        "bazel_output_service_impl.cc",
+        "bazel_output_service_impl.h",
+        "main.cc",
+    ],
+    deps = [
+        "//src/main/protobuf:bazel_output_service_cc_grpc",
+        "//src/main/protobuf:bazel_output_service_cc_proto",
+        "//src/main/protobuf:bazel_output_service_rev2_cc_proto",
+        "//third_party/grpc:grpc++_unsecure",
+    ],
+)
diff --git a/src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.cc b/src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.cc
new file mode 100644
index 00000000000000..9fc944261bc636
--- /dev/null
+++ b/src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.cc
@@ -0,0 +1,15 @@
+// Copyright 2024 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.h"
diff --git a/src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.h b/src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.h
new file mode 100644
index 00000000000000..5a9f312f4a2b97
--- /dev/null
+++ b/src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.h
@@ -0,0 +1,23 @@
+// Copyright 2024 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef BAZEL_SRC_TOOLS_REMOTE_SRC_MAIN_CPP_OUTPUT_SERVICE_BAZEL_OUTPUT_SERVICE_IMPL_H_
+#define BAZEL_SRC_TOOLS_REMOTE_SRC_MAIN_CPP_OUTPUT_SERVICE_BAZEL_OUTPUT_SERVICE_IMPL_H_
+
+#include "src/main/protobuf/bazel_output_service.grpc.pb.h"
+
+class BazelOutputServiceImpl
+    : public bazel_output_service::BazelOutputService::Service {};
+
+#endif  // BAZEL_SRC_TOOLS_REMOTE_SRC_MAIN_CPP_OUTPUT_SERVICE_BAZEL_OUTPUT_SERVICE_IMPL_H_
diff --git a/src/tools/remote/src/main/cpp/testonly_output_service/main.cc b/src/tools/remote/src/main/cpp/testonly_output_service/main.cc
new file mode 100644
index 00000000000000..6d96ed51d5d448
--- /dev/null
+++ b/src/tools/remote/src/main/cpp/testonly_output_service/main.cc
@@ -0,0 +1,40 @@
+// Copyright 2024 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <iostream>
+#include <memory>
+#include <string>
+
+#include "src/tools/remote/src/main/cpp/testonly_output_service/bazel_output_service_impl.h"
+#include "grpcpp/security/server_credentials.h"
+#include "grpcpp/server_builder.h"
+
+static void RunServer() {
+  BazelOutputServiceImpl service;
+
+  std::string server_address = "0.0.0.0:8080";
+
+  grpc::ServerBuilder builder;
+  builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
+  builder.RegisterService(&service);
+  std::unique_ptr<grpc::Server> server(builder.BuildAndStart());
+  std::cerr << "Server listening on " << server_address << std::endl;
+
+  server->Wait();
+}
+
+int main(int argc, char** argv) {
+  RunServer();
+  return 0;
+}