diff --git a/.arcconfig b/.arcconfig
new file mode 100644
--- /dev/null
+++ b/.arcconfig
@@ -0,0 +1,9 @@
+{
+  "conduit_uri" : "https://reviews.bitcoinabc.org/",
+  "repository.callsign": "ABCWEB",
+  "base" : "git:HEAD^, hg:.^",
+  "git.default-relative-commit" : "HEAD^",
+  "git:arc.feature.start.default" : "origin/master",
+  "arc.feature.start.default" : "master",
+  "history.immutable" : false
+}