diff --git a/hyperglass/configuration/validate.py b/hyperglass/configuration/validate.py
index 42e68df..aa59619 100644
--- a/hyperglass/configuration/validate.py
+++ b/hyperglass/configuration/validate.py
@@ -125,6 +125,7 @@ def init_ui_params(*, params: "Params", devices: "Devices") -> "UIParameters":
         **_ui_params,
         version=__version__,
         devices=devices.frontend(),
+        developer_mode=Settings.dev_mode,
         parsed_data_fields=PARSED_RESPONSE_FIELDS,
         content={"credit": content_credit, "greeting": content_greeting},
     )
diff --git a/hyperglass/models/ui.py b/hyperglass/models/ui.py
index 8fc6fed..a727681 100644
--- a/hyperglass/models/ui.py
+++ b/hyperglass/models/ui.py
@@ -72,3 +72,4 @@ class UIParameters(ParamsPublic, HyperglassModel):
     devices: List[UIDevices] = []
     parsed_data_fields: Tuple[StructuredDataField, ...]
     content: UIContent
+    developer_mode: StrictBool