diff --git a/dc/cmc-proxy/proto/proxy.proto b/dc/cmc-proxy/proto/proxy.proto
new file mode 100644
index 0000000..5afe6b9
--- /dev/null
+++ b/dc/cmc-proxy/proto/proxy.proto
@@ -0,0 +1,15 @@
+syntax = "proto3";
+package proto;
+option go_package = "code.hackerspace.pl/hscloud/dc/cmc-proxy/proto";
+
+message GetKVMDataRequest {
+    int64 blade_num = 1;
+}
+
+message GetKVMDataResponse {
+    repeated string arguments = 1;
+}
+
+service CMCProxy {
+    rpc GetKVMData(GetKVMDataRequest) returns (GetKVMDataResponse);
+}