diff --git a/Libraries/LibDevTools/Actors/LayoutInspectorActor.cpp b/Libraries/LibDevTools/Actors/LayoutInspectorActor.cpp
new file mode 100644
index 00000000000..1a53fb318e2
--- /dev/null
+++ b/Libraries/LibDevTools/Actors/LayoutInspectorActor.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/JsonArray.h>
+#include <AK/JsonObject.h>
+#include <LibDevTools/Actors/LayoutInspectorActor.h>
+
+namespace DevTools {
+
+NonnullRefPtr<LayoutInspectorActor> LayoutInspectorActor::create(DevToolsServer& devtools, String name)
+{
+    return adopt_ref(*new LayoutInspectorActor(devtools, move(name)));
+}
+
+LayoutInspectorActor::LayoutInspectorActor(DevToolsServer& devtools, String name)
+    : Actor(devtools, move(name))
+{
+}
+
+LayoutInspectorActor::~LayoutInspectorActor() = default;
+
+void LayoutInspectorActor::handle_message(StringView type, JsonObject const&)
+{
+    JsonObject response;
+    response.set("from"sv, name());
+
+    if (type == "getCurrentFlexbox"sv) {
+        response.set("flexbox"sv, JsonValue {});
+        send_message(move(response));
+        return;
+    }
+
+    if (type == "getGrids"sv) {
+        response.set("grids"sv, JsonArray {});
+        send_message(move(response));
+        return;
+    }
+
+    send_unrecognized_packet_type_error(type);
+}
+
+}
diff --git a/Libraries/LibDevTools/Actors/LayoutInspectorActor.h b/Libraries/LibDevTools/Actors/LayoutInspectorActor.h
new file mode 100644
index 00000000000..986bcbf572c
--- /dev/null
+++ b/Libraries/LibDevTools/Actors/LayoutInspectorActor.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/NonnullRefPtr.h>
+#include <LibDevTools/Actor.h>
+
+namespace DevTools {
+
+class LayoutInspectorActor final : public Actor {
+public:
+    static constexpr auto base_name = "layout-inspector"sv;
+
+    static NonnullRefPtr<LayoutInspectorActor> create(DevToolsServer&, String name);
+    virtual ~LayoutInspectorActor() override;
+
+    virtual void handle_message(StringView type, JsonObject const&) override;
+
+private:
+    LayoutInspectorActor(DevToolsServer&, String name);
+};
+
+}
diff --git a/Libraries/LibDevTools/Actors/WalkerActor.cpp b/Libraries/LibDevTools/Actors/WalkerActor.cpp
index d793cf8d123..9646ad45599 100644
--- a/Libraries/LibDevTools/Actors/WalkerActor.cpp
+++ b/Libraries/LibDevTools/Actors/WalkerActor.cpp
@@ -6,6 +6,7 @@
 
 #include <AK/JsonArray.h>
 #include <AK/StringUtils.h>
+#include <LibDevTools/Actors/LayoutInspectorActor.h>
 #include <LibDevTools/Actors/NodeActor.h>
 #include <LibDevTools/Actors/TabActor.h>
 #include <LibDevTools/Actors/WalkerActor.h>
@@ -59,6 +60,18 @@ void WalkerActor::handle_message(StringView type, JsonObject const& message)
         return;
     }
 
+    if (type == "getLayoutInspector"sv) {
+        if (!m_layout_inspector)
+            m_layout_inspector = devtools().register_actor<LayoutInspectorActor>();
+
+        JsonObject actor;
+        actor.set("actor"sv, m_layout_inspector->name());
+
+        response.set("actor"sv, move(actor));
+        send_message(move(response));
+        return;
+    }
+
     if (type == "querySelector"sv) {
         auto node = message.get_string("node"sv);
         if (!node.has_value()) {
diff --git a/Libraries/LibDevTools/Actors/WalkerActor.h b/Libraries/LibDevTools/Actors/WalkerActor.h
index 90cc69919be..f8b667b1070 100644
--- a/Libraries/LibDevTools/Actors/WalkerActor.h
+++ b/Libraries/LibDevTools/Actors/WalkerActor.h
@@ -44,6 +44,8 @@ private:
     void populate_dom_tree_cache(JsonObject& node, JsonObject const* parent = nullptr);
 
     WeakPtr<TabActor> m_tab;
+    WeakPtr<LayoutInspectorActor> m_layout_inspector;
+
     JsonObject m_dom_tree;
 
     HashMap<JsonObject const*, JsonObject const*> m_dom_node_to_parent_map;
diff --git a/Libraries/LibDevTools/CMakeLists.txt b/Libraries/LibDevTools/CMakeLists.txt
index 2babaaee865..279c0036966 100644
--- a/Libraries/LibDevTools/CMakeLists.txt
+++ b/Libraries/LibDevTools/CMakeLists.txt
@@ -5,6 +5,7 @@ set(SOURCES
     Actors/FrameActor.cpp
     Actors/HighlighterActor.cpp
     Actors/InspectorActor.cpp
+    Actors/LayoutInspectorActor.cpp
     Actors/NodeActor.cpp
     Actors/PageStyleActor.cpp
     Actors/PreferenceActor.cpp
diff --git a/Libraries/LibDevTools/Forward.h b/Libraries/LibDevTools/Forward.h
index 637eab76eb1..ddfa9a3e377 100644
--- a/Libraries/LibDevTools/Forward.h
+++ b/Libraries/LibDevTools/Forward.h
@@ -17,6 +17,7 @@ class DevToolsServer;
 class FrameActor;
 class HighlighterActor;
 class InspectorActor;
+class LayoutInspectorActor;
 class NodeActor;
 class PageStyleActor;
 class PreferenceActor;