diff --git a/mediapipe/model_maker/python/internal/README.md b/mediapipe/model_maker/python/internal/README.md
new file mode 100644
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+++ b/mediapipe/model_maker/python/internal/README.md
@@ -0,0 +1,4 @@
+# MediaPipe Model Maker Internal Library
+
+This directory contains model maker library for internal users and experimental
+purposes.
diff --git a/mediapipe/model_maker/python/internal/__init__.py b/mediapipe/model_maker/python/internal/__init__.py
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index 000000000..05f41d8a4
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+++ b/mediapipe/model_maker/python/internal/__init__.py
@@ -0,0 +1 @@
+"""Model maker internal library."""