diff --git a/experiments/extensions/read_ext1.py b/experiments/extensions/read_ext1.py
new file mode 100755
index 0000000..8032615
--- /dev/null
+++ b/experiments/extensions/read_ext1.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+"""
+Read adapter data while decoding ext1 custom fields.
+"""
+import sys
+from json import dumps
+
+from common.utils.json_format import MessageToDict
+from voltha.protos import adapter_pb2
+
+adapter = adapter_pb2.Adapter()
+binary = sys.stdin.read()
+adapter.ParseFromString(binary)
+
+print dumps(MessageToDict(adapter, strict_any_handling=False))
+