diff --git a/apps/mcast/api/BUILD b/apps/mcast/api/BUILD
new file mode 100644
index 0000000..646cfb8
--- /dev/null
+++ b/apps/mcast/api/BUILD
@@ -0,0 +1,4 @@
+osgi_jar(
+    deps = CORE_DEPS,
+    visibility = ["//visibility:public"],
+)