diff --git a/src/backend/database/routes/keybinding-validation.ts b/src/backend/database/routes/keybinding-validation.ts
index 1890c328..11911049 100644
--- a/src/backend/database/routes/keybinding-validation.ts
+++ b/src/backend/database/routes/keybinding-validation.ts
@@ -4,6 +4,9 @@ const VALID_ACTION_TYPES = [
   "sendControlCode",
   "sendText",
   "runSnippet",
+  "nextTab",
+  "previousTab",
+  "openCommandPalette",
 ];
 
 export function isValidKeyCombo(combo: unknown): boolean {
diff --git a/src/backend/tests/database/routes/keybinding-validation.test.ts b/src/backend/tests/database/routes/keybinding-validation.test.ts
index 0802be37..b25ae37b 100644
--- a/src/backend/tests/database/routes/keybinding-validation.test.ts
+++ b/src/backend/tests/database/routes/keybinding-validation.test.ts
@@ -36,6 +36,13 @@ describe("isValidKeybindingAction", () => {
     expect(isValidKeybindingAction({ type: "paste" })).toBe(true);
   });
 
+  it.each(["nextTab", "previousTab", "openCommandPalette"])(
+    "accepts the global %s action",
+    (type) => {
+      expect(isValidKeybindingAction({ type })).toBe(true);
+    },
+  );
+
   it("rejects an unknown action type", () => {
     expect(isValidKeybindingAction({ type: "explode" })).toBe(false);
   });
diff --git a/src/types/keybindings.ts b/src/types/keybindings.ts
index 5286560b..f34e09eb 100644
--- a/src/types/keybindings.ts
+++ b/src/types/keybindings.ts
@@ -8,7 +8,14 @@ export interface KeyCombo {
 }
 
 export type KeybindingActionType =
-  "copy" | "paste" | "sendControlCode" | "sendText" | "runSnippet";
+  | "copy"
+  | "paste"
+  | "sendControlCode"
+  | "sendText"
+  | "runSnippet"
+  | "nextTab"
+  | "previousTab"
+  | "openCommandPalette";
 
 export interface KeybindingAction {
   type: KeybindingActionType;
diff --git a/src/ui/AppShell.tsx b/src/ui/AppShell.tsx
index c2f38371..bda72407 100644
--- a/src/ui/AppShell.tsx
+++ b/src/ui/AppShell.tsx
@@ -41,6 +41,12 @@ import { defaultSizes, SplitView, type RowColSizes } from "@/shell/SplitView";
 import { renderTabContent } from "@/shell/tabUtils";
 import { TabBar } from "@/shell/TabBar";
 import { dispatchCtrlW, isShiftKey } from "@/lib/app-keyboard-shortcuts";
+import { parseCustomKeybindings } from "@/api/open-tabs-api";
+import { findMatchingKeybinding } from "@/lib/keybinding-match";
+import type {
+  CustomKeybinding,
+  KeybindingActionType,
+} from "@/types/keybindings";
 
 // Shell surfaces that are not needed for first paint.
 const CommandPalette = lazy(() =>
@@ -454,6 +460,7 @@ export function AppShell({
   const tabsRef = useRef(tabs);
   const activeTabIdRef = useRef(activeTabId);
   const closeActiveTabRef = useRef<() => void>(() => {});
+  const globalKeybindingsRef = useRef<CustomKeybinding[]>([]);
   const splitModeRef = useRef(splitMode);
   const focusedPaneIndexRef = useRef<number | null>(null);
   const paneContentElsRef = useRef<(HTMLDivElement | null)[]>(
@@ -463,6 +470,76 @@ export function AppShell({
   useEffect(() => {
     tabsRef.current = tabs;
   }, [tabs]);
+
+  useEffect(() => {
+    let cancelled = false;
+    const load = () => {
+      getUserPreferences()
+        .then((prefs) => {
+          if (cancelled) return;
+          globalKeybindingsRef.current = parseCustomKeybindings(
+            prefs.customKeybindings,
+          ).filter(
+            (binding) =>
+              binding.enabled &&
+              ["nextTab", "previousTab", "openCommandPalette"].includes(
+                binding.action.type,
+              ),
+          );
+        })
+        .catch(() => {});
+    };
+    load();
+    window.addEventListener("customKeybindingsChanged", load);
+    return () => {
+      cancelled = true;
+      window.removeEventListener("customKeybindingsChanged", load);
+    };
+  }, []);
+
+  useEffect(() => {
+    const runAction = (type: KeybindingActionType) => {
+      if (type === "openCommandPalette") {
+        setCommandPaletteOpen(true);
+        return;
+      }
+      const currentTabs = tabsRef.current;
+      if (currentTabs.length < 2) return;
+      const index = currentTabs.findIndex(
+        (tab) => tab.id === activeTabIdRef.current,
+      );
+      const offset = type === "nextTab" ? 1 : -1;
+      const next = (index + offset + currentTabs.length) % currentTabs.length;
+      setActiveTabId(currentTabs[next].id);
+    };
+
+    const handleKeyDown = (event: KeyboardEvent) => {
+      if (
+        event.target instanceof Element &&
+        event.target.closest("[data-keybinding-recorder]")
+      )
+        return;
+      const binding = findMatchingKeybinding(
+        event,
+        globalKeybindingsRef.current,
+      );
+      if (!binding) return;
+      event.preventDefault();
+      event.stopPropagation();
+      runAction(binding.action.type);
+    };
+    const handleAction = (event: Event) =>
+      runAction(
+        (event as CustomEvent<{ type: KeybindingActionType }>).detail.type,
+      );
+
+    window.addEventListener("keydown", handleKeyDown, true);
+    window.addEventListener("termix:global-keybinding", handleAction);
+    return () => {
+      window.removeEventListener("keydown", handleKeyDown, true);
+      window.removeEventListener("termix:global-keybinding", handleAction);
+    };
+  }, []);
   useEffect(() => {
     activeTabIdRef.current = activeTabId;
   }, [activeTabId]);
diff --git a/src/ui/lib/keybinding-dispatch.ts b/src/ui/lib/keybinding-dispatch.ts
index 8f7f76f1..3e718014 100644
--- a/src/ui/lib/keybinding-dispatch.ts
+++ b/src/ui/lib/keybinding-dispatch.ts
@@ -82,5 +82,15 @@ export function dispatchKeybindingAction(
       });
       return;
     }
+    case "nextTab":
+    case "previousTab":
+    case "openCommandPalette": {
+      window.dispatchEvent(
+        new CustomEvent("termix:global-keybinding", {
+          detail: { type: action.type },
+        }),
+      );
+      return;
+    }
   }
 }
diff --git a/src/ui/locales/en.json b/src/ui/locales/en.json
index e160347b..0c6b628f 100644
--- a/src/ui/locales/en.json
+++ b/src/ui/locales/en.json
@@ -4057,6 +4057,9 @@
         "actionSendControlCode": "Send Ctrl+letter signal",
         "actionSendText": "Send text",
         "actionRunSnippet": "Run existing snippet",
+        "actionNextTab": "Switch to next tab",
+        "actionPreviousTab": "Switch to previous tab",
+        "actionOpenCommandPalette": "Open quick search",
         "controlCodeLabel": "Letter",
         "textLabel": "Text to send",
         "appendEnterLabel": "Press Enter after sending",
diff --git a/src/ui/sidebar/KeybindingsDialog.tsx b/src/ui/sidebar/KeybindingsDialog.tsx
index d64487ba..ad90f8e5 100644
--- a/src/ui/sidebar/KeybindingsDialog.tsx
+++ b/src/ui/sidebar/KeybindingsDialog.tsx
@@ -44,6 +44,9 @@ const ACTION_LABEL_KEYS: Record<KeybindingActionType, string> = {
   sendControlCode: "newUi.sidebar.keybindings.actionSendControlCode",
   sendText: "newUi.sidebar.keybindings.actionSendText",
   runSnippet: "newUi.sidebar.keybindings.actionRunSnippet",
+  nextTab: "newUi.sidebar.keybindings.actionNextTab",
+  previousTab: "newUi.sidebar.keybindings.actionPreviousTab",
+  openCommandPalette: "newUi.sidebar.keybindings.actionOpenCommandPalette",
 };
 
 function generateId(): string {
@@ -450,6 +453,7 @@ export function KeybindingsDialog({
                 <span className="text-accent-brand">*</span>
               </label>
               <Input
+                data-keybinding-recorder
                 readOnly
                 value={
                   recording
@@ -497,6 +501,15 @@ export function KeybindingsDialog({
                 <option value="runSnippet">
                   {t("newUi.sidebar.keybindings.actionRunSnippet")}
                 </option>
+                <option value="nextTab">
+                  {t("newUi.sidebar.keybindings.actionNextTab")}
+                </option>
+                <option value="previousTab">
+                  {t("newUi.sidebar.keybindings.actionPreviousTab")}
+                </option>
+                <option value="openCommandPalette">
+                  {t("newUi.sidebar.keybindings.actionOpenCommandPalette")}
+                </option>
               </select>
               {actionType === "paste" && (
                 <span className="text-xs text-muted-foreground">