diff --git a/meshbook.py b/meshbook.py
index c878baa..61bca1d 100644
--- a/meshbook.py
+++ b/meshbook.py
@@ -66,7 +66,7 @@ async def init_connection(credentials: dict) -> meshctrl.Session:
     '''
 
     session = meshctrl.Session(
-        credentials['websocket_url'],
+        credentials['hostname'],
         user=credentials['username'],
         password=credentials['password']
     )
diff --git a/os_categories.json b/os_categories.json
new file mode 100644
index 0000000..9213310
--- /dev/null
+++ b/os_categories.json
@@ -0,0 +1,18 @@
+{
+    "Linux": {
+        "Debian": [
+            "Debian GNU/Linux 12 (bookworm)",
+            "Debian GNU/Linux 11 (bullseye)"
+        ],
+        "Ubuntu": [
+            "Ubuntu 24.04.1 LTS",
+            "Ubuntu 22.04.5 LTS",
+            "Ubuntu 20.04.6 LTS"
+        ]
+    },
+    "MacOS": {
+        "Sequoia": [
+            "macOS 15.0.1"
+        ]
+    }
+}
\ No newline at end of file
diff --git a/templates/meshcentral.conf.template b/templates/meshcentral.conf.template
index dc1cee3..c8c2ffd 100644
--- a/templates/meshcentral.conf.template
+++ b/templates/meshcentral.conf.template
@@ -1,4 +1,4 @@
 [meshcentral-account]
-websocket_url =
+hostname =
 username = 
 password =
\ No newline at end of file