diff --git a/arkadia/gmcp.tf b/arkadia/gmcp.tf
new file mode 100644
index 0000000..be85a06
--- /dev/null
+++ b/arkadia/gmcp.tf
@@ -0,0 +1,4 @@
+/set _gmcp_echo=1
+
+/def -hGMCP _gmcp_received = \
+  /echo -p @{BCmagenta}GMCP: %{*}