diff --git a/.arcconfig b/.arcconfig
new file mode 100644
index 0000000000..262db5b7d1
--- /dev/null
+++ b/.arcconfig
@@ -0,0 +1,4 @@
+{
+  "phabricator.uri": "https://phab.lukegb.com",
+  "repository.callsign": "D"
+}