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Guardian Blueprints

Updated: Apr 15, 2026

Reference guide for the Guardian Blueprints available through UOculusXRFunctionLibrary in the OculusXRHMD module of the Meta XR Plugin.

Legacy guidance: The Guardian Blueprint API is a legacy interface. Four of the seven functions listed below have been deprecated since UE 4.27 and are non-functional on the current OpenXR code path: Get Node Guardian Intersection, Get Point Guardian Intersection, Is Guardian Displayed, and Set Guardian Visibility.

For boundary visibility control, use the Boundary API documented at Boundaryless.

The three non-deprecated functions (Get Guardian Dimensions, Get Guardian Points, and Get Play Area Transform) remain available in the Meta XR Plugin.

Get Guardian Dimensions Returns the dimensions of the Outer Boundary or the Play Area, expressed in Unreal Engine units.

Get Guardian Points Returns the points, in Unreal Engine world space, that define the Outer Boundary or the Play Area.

Get Node Guardian Intersection (Deprecated) Returns the intersection result between a tracked device (HMD or Controller) and the Guardian boundary. Deprecated since UE 4.27; non-functional on the OpenXR code path.

Get Play Area Transform Returns the transform of the Play Area rectangle, defining its position, rotation, and scale to apply a unit cube to match it with the Play Area.

Get Point Guardian Intersection (Deprecated) Returns the intersection result between the Guardian boundary and a specified Unreal Engine coordinate. Deprecated since UE 4.27; non-functional on the OpenXR code path.

Is Guardian Displayed (Deprecated) Returns a boolean result that indicates whether the Outer Boundary Guardian is being displayed. Deprecated since UE 4.27; non-functional on the OpenXR code path.

Set Guardian Visibility (Deprecated) Specifies whether the runtime should render the Guardian. Deprecated since UE 4.27; non-functional on the OpenXR code path.