diff --git a/hassio/discovery/services/adguard.py b/hassio/discovery/services/adguard.py
new file mode 100644
index 000000000..4a3503ce0
--- /dev/null
+++ b/hassio/discovery/services/adguard.py
@@ -0,0 +1,11 @@
+"""Discovery service for AdGuard."""
+import voluptuous as vol
+
+from hassio.validate import NETWORK_PORT
+
+from ..const import ATTR_HOST, ATTR_PORT
+
+
+SCHEMA = vol.Schema(
+    {vol.Required(ATTR_HOST): vol.Coerce(str), vol.Required(ATTR_PORT): NETWORK_PORT}
+)