diff --git a/mg_msgs/action/I2c.action b/mg_msgs/action/I2c.action
new file mode 100644
index 0000000..0eeb385
--- /dev/null
+++ b/mg_msgs/action/I2c.action
@@ -0,0 +1,5 @@
+uint8 addr
+uint8 data
+---
+uint8[] resp
+---
\ No newline at end of file