diff --git a/nixpacks.toml b/nixpacks.toml
index b141a779..8e4746c5 100644
--- a/nixpacks.toml
+++ b/nixpacks.toml
@@ -1,11 +1,10 @@
 # Explicit build config for Railway/Nixpacks (pure-stdlib Python service).
-# Default start = the Discord webhook receiver. For the 24/7 copybot worker,
-# deploy a second service from this repo and override the start command with
-#   bash host/start.sh
-# (see host/start.sh for the full setup). git is needed at runtime — the bot
-# persists its book by committing state + feed back to GitHub.
+# Start = the 24/7 copybot worker (bash host/start.sh, also pinned by
+# railway.json's deploy.startCommand). git is needed at runtime — the bot
+# persists its book by committing state + feed back to GitHub. The old
+# webhook_receiver default is retired (archive/webhook_receiver.py).
 [phases.setup]
 nixPkgs = ["python311", "git"]
 
 [start]
-cmd = "python3 webhook_receiver.py"
+cmd = "bash host/start.sh"
diff --git a/railway.json b/railway.json
new file mode 100644
index 00000000..705e47dc
--- /dev/null
+++ b/railway.json
@@ -0,0 +1,8 @@
+{
+  "$schema": "https://railway.com/railway.schema.json",
+  "deploy": {
+    "startCommand": "bash host/start.sh",
+    "restartPolicyType": "ON_FAILURE",
+    "restartPolicyMaxRetries": 10
+  }
+}