diff --git a/Sources/OpenSwiftUICore/View/Text/Text/Text+Encapsulation.swift b/Sources/OpenSwiftUICore/View/Text/Text/Text+Encapsulation.swift
new file mode 100644
index 000000000..399f44c94
--- /dev/null
+++ b/Sources/OpenSwiftUICore/View/Text/Text/Text+Encapsulation.swift
@@ -0,0 +1,96 @@
+//
+//  Text+Encapsulation.swift
+//  OpenSwiftUICore
+//
+//  Audited for 6.5.4
+//  Status: Complete
+
+public import OpenCoreGraphicsShims
+import UIFoundation_Private
+
+@_spi(Private)
+@available(OpenSwiftUI_v4_0, *)
+extension Text {
+    public struct Encapsulation: Hashable, Sendable {
+        var scale: Scale?
+        var shape: Shape?
+        var style: Style?
+        var lineWeight: CGFloat?
+        var color: Color?
+        var minimumWidth: CGFloat?
+        var platterSize: PlatterSize?
+
+        @_disfavoredOverload
+        public init(
+            scale: Text.Encapsulation.Scale? = nil,
+            shape: Text.Encapsulation.Shape? = nil,
+            style: Text.Encapsulation.Style? = nil,
+            lineWeight: CGFloat? = nil,
+            color: Color? = nil,
+            minimumWidth: CGFloat? = nil
+        ) {
+            self.scale = scale
+            self.shape = shape
+            self.style = style
+            self.lineWeight = lineWeight
+            self.color = color
+            self.minimumWidth = minimumWidth
+        }
+
+        @available(OpenSwiftUI_v5_0, *)
+        public init(
+            scale: Text.Encapsulation.Scale? = nil,
+            shape: Text.Encapsulation.Shape? = nil,
+            style: Text.Encapsulation.Style? = nil,
+            platterSize: Text.Encapsulation.PlatterSize? = nil,
+            lineWeight: CGFloat? = nil,
+            color: Color? = nil,
+            minimumWidth: CGFloat? = nil
+        ) {
+            self.scale = scale
+            self.shape = shape
+            self.style = style
+            self.platterSize = platterSize
+            self.lineWeight = lineWeight
+            self.color = color
+            self.minimumWidth = minimumWidth
+        }
+
+        public struct Scale: Hashable, Sendable {
+            let nsScale: NSTextEncapsulationScale
+
+            public static let small: Text.Encapsulation.Scale = .init(nsScale: .small)
+
+            public static let medium: Text.Encapsulation.Scale = .init(nsScale: .medium)
+
+            public static let large: Text.Encapsulation.Scale = .init(nsScale: .large)
+        }
+
+        public struct Shape: Hashable, Sendable {
+            let nsShape: NSTextEncapsulationShape
+
+            public static let rectangle: Text.Encapsulation.Shape = .init(nsShape: .rectangle)
+
+            public static let roundedRectangle: Text.Encapsulation.Shape = .init(nsShape: .roundedRectangle)
+
+            public static let capsule: Text.Encapsulation.Shape = .init(nsShape: .capsule)
+        }
+
+        public struct Style: Hashable, Sendable {
+            let nsStyle: NSTextEncapsulationStyle
+
+            public static let outline: Text.Encapsulation.Style = .init(nsStyle: .outline)
+
+            public static let fill: Text.Encapsulation.Style = .init(nsStyle: .fill)
+        }
+
+        @available(OpenSwiftUI_v5_0, *)
+        public struct PlatterSize: Hashable, Sendable {
+            let nsPlatterSize: NSTextEncapsulationPlatterSize
+
+            public static let regular: Text.Encapsulation.PlatterSize = .init(nsPlatterSize: .regular)
+
+            public static let large: Text.Encapsulation.PlatterSize = .init(nsPlatterSize: .large)
+        }
+    }
+}
diff --git a/Sources/OpenSwiftUI_SPI/Shims/UIFoundation/NSTextEncapsulation.h b/Sources/OpenSwiftUI_SPI/Shims/UIFoundation/NSTextEncapsulation.h
new file mode 100644
index 000000000..4d49e16e2
--- /dev/null
+++ b/Sources/OpenSwiftUI_SPI/Shims/UIFoundation/NSTextEncapsulation.h
@@ -0,0 +1,31 @@
+//
+//  NSTextEncapsulation.h
+//  OpenSwiftUI_SPI
+
+#pragma once
+
+#include "OpenSwiftUIBase.h"
+
+typedef unsigned long NSUInteger;
+
+typedef OPENSWIFTUI_CLOSED_ENUM(NSUInteger, NSTextEncapsulationScale) {
+    NSTextEncapsulationScaleMedium = 0x0,
+    NSTextEncapsulationScaleSmall = 0x1,
+    NSTextEncapsulationScaleLarge = 0x2,
+};
+
+typedef OPENSWIFTUI_CLOSED_ENUM(NSUInteger, NSTextEncapsulationShape) {
+    NSTextEncapsulationShapeRoundedRectangle = 0x0,
+    NSTextEncapsulationShapeRectangle = 0x1,
+    NSTextEncapsulationShapeCapsule = 0x2,
+};
+
+typedef OPENSWIFTUI_CLOSED_ENUM(NSUInteger, NSTextEncapsulationStyle) {
+    NSTextEncapsulationStyleOutline = 0x0,
+    NSTextEncapsulationStyleFill = 0x1,
+};
+
+typedef OPENSWIFTUI_CLOSED_ENUM(NSUInteger, NSTextEncapsulationPlatterSize) {
+    NSTextEncapsulationPlatterSizeRegular = 0x0,
+    NSTextEncapsulationPlatterSizeLarge = 0x1,
+};