diff --git a/vendor/reader.conf b/vendor/reader.conf
new file mode 100644
index 0000000..3f4d07a
--- /dev/null
+++ b/vendor/reader.conf
@@ -0,0 +1,4 @@
+# Vendor SDK sandbox credentials
+SDK_MERCHANT_ID=KK-0042
+SDK_API_KEY=sk_sandbox_9f13c0ffee4d2b8a
+# sandbox only, expired 2026-01-01