diff --git a/library/modules/platform/api.sx b/library/modules/platform/api.sx
new file mode 100644
index 0000000..3563c95
--- /dev/null
+++ b/library/modules/platform/api.sx
@@ -0,0 +1,22 @@
+#import "modules/std.sx";
+#import "modules/ui/types.sx";
+#import "modules/ui/events.sx";
+#import "modules/platform/types.sx";
+
+Platform :: protocol {
+    init :: (title: [:0]u8, w: s32, h: s32) -> bool;
+
+    run_frame_loop :: (frame_fn: Closure());
+
+    poll_events :: () -> []Event;
+
+    begin_frame :: () -> FrameContext;
+    end_frame :: ();
+
+    safe_insets :: () -> EdgeInsets;
+    keyboard :: () -> KeyboardState;
+    show_keyboard :: ();
+    hide_keyboard :: ();
+
+    shutdown :: ();
+}
diff --git a/library/modules/platform/types.sx b/library/modules/platform/types.sx
new file mode 100644
index 0000000..37b1e39
--- /dev/null
+++ b/library/modules/platform/types.sx
@@ -0,0 +1,19 @@
+#import "modules/std.sx";
+#import "modules/ui/types.sx";
+#import "modules/ui/events.sx";
+
+FrameContext :: struct {
+    viewport_w: f32;
+    viewport_h: f32;
+    pixel_w: s32;
+    pixel_h: s32;
+    dpi_scale: f32;
+    delta_time: f32;
+}
+
+KeyboardState :: struct {
+    visible: bool;
+    height: f32;
+
+    zero :: () -> KeyboardState => .{ visible = false, height = 0.0 };
+}