diff --git a/nixpacks.toml b/nixpacks.toml
new file mode 100644
index 00000000..5aad7e2e
--- /dev/null
+++ b/nixpacks.toml
@@ -0,0 +1,6 @@
+# Explicit build config for Railway/Nixpacks (pure-stdlib Python service)
+[phases.setup]
+nixPkgs = ["python311"]
+
+[start]
+cmd = "python3 webhook_receiver.py"
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 00000000..978a75c9
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+# Winning Wallet Finder — no third-party deps, Python 3 stdlib only.
+# This file exists so Railway/Nixpacks detects a Python app.
diff --git a/runtime.txt b/runtime.txt
new file mode 100644
index 00000000..2c073331
--- /dev/null
+++ b/runtime.txt
@@ -0,0 +1 @@
+3.11