diff --git a/tools/finalization/build-step-1.sh b/tools/finalization/build-step-1.sh
new file mode 100755
index 0000000..0f562b4
--- /dev/null
+++ b/tools/finalization/build-step-1.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -ex
+
+function finalize_main() {
+    local top="$(dirname "$0")"/../..
+
+    # default target to modify tree and build SDK
+    local m="$top/build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=aosp_arm64 TARGET_BUILD_VARIANT=userdebug"
+
+    # Build finalization artifacts.
+    source $top/build/make/tools/finalization/finalize-aidl-vndk-sdk-resources.sh
+
+    # This command tests:
+    #   The release state for AIDL.
+    #   ABI difference between user and userdebug builds.
+    #   Resource/SDK finalization.
+    AIDL_FROZEN_REL=true $m
+}
+
+finalize_main
+