diff --git a/frontend/src/app/pages/AgentChat/tool-ui/ShowUiWidgetView.tsx b/frontend/src/app/pages/AgentChat/tool-ui/ShowUiWidgetView.tsx
index 02604329..31315853 100644
--- a/frontend/src/app/pages/AgentChat/tool-ui/ShowUiWidgetView.tsx
+++ b/frontend/src/app/pages/AgentChat/tool-ui/ShowUiWidgetView.tsx
@@ -5,9 +5,11 @@ import StatsWidget from './StatsWidget';
 import LinksWidget from './LinksWidget';
 import VendoredToolUi from '@toolui/VendoredToolUi';
 import type { ShowUiPayload } from './showUiPayload';
+import { useOpenUrlInBrowserCard } from './useOpenUrlInBrowserCard';
 
 /** One switch for every surface that renders a ShowUI payload (chat bubble, pill artifact); ambient = low-cost render for resting surfaces. */
 function ShowUiWidgetView({ payload, ambient }: { payload: ShowUiPayload; ambient?: boolean }): React.ReactElement | null {
+  const openUrl = useOpenUrlInBrowserCard();
   if (payload.component === 'weather') return <WeatherWidget props={payload.props} ambient={ambient} />;
   if (payload.component === 'plan') return <PlanWidget props={payload.props} />;
   if (payload.component === 'stats') return <StatsWidget props={payload.props} />;
@@ -18,7 +20,32 @@ function ShowUiWidgetView({ payload, ambient }: { payload: ShowUiPayload; ambien
     const title = [raw.title, raw.question, raw.prompt, raw.heading]
       .find((v): v is string => typeof v === 'string' && v.trim().length > 0) ?? '';
     const desc = typeof raw.description === 'string' && raw.description !== title ? raw.description : '';
-    const widget = <VendoredToolUi name={payload.name} props={payload.props} quietFail={ambient} />;
+    // The vendored media components ship real navigation callbacks that were never passed, so a rendered post went nowhere and links opened UNDER a fullscreen chat (ENG-234).
+    const nav: Record<string, unknown> = {};
+    const postUrl = /^(x|linkedin|instagram)-post$/.test(payload.name) && typeof raw.url === 'string' ? raw.url : null;
+    if (payload.name === 'x-post' && postUrl) nav.onOpen = () => openUrl(postUrl);
+    if (payload.name === 'link-preview' || payload.name === 'image') nav.onNavigate = (href: string) => openUrl(href);
+    // A bare image (src only) is unclickable by contract; defaulting href to the source makes the click open the full-size original.
+    if (payload.name === 'image' && typeof raw.href !== 'string') {
+      const fallback = [raw.src, raw.url].find((v): v is string => typeof v === 'string');
+      if (fallback) nav.href = fallback;
+    }
+    let widget = <VendoredToolUi name={payload.name} props={payload.props} quietFail={ambient} extraProps={nav} />;
+    // The post components only wire clicks on their media, so a text-only post has no way to reach the actual post; the whole card opens it, like the platforms themselves (skipped on ambient pills, where a click means expand).
+    if (postUrl && !ambient) {
+      widget = (
+        <div
+          style={{ cursor: 'pointer' }}
+          onClickCapture={(e: React.MouseEvent) => {
+            const target = e.target as HTMLElement;
+            if (target.closest('button, a, input, textarea, [role=button]')) return;
+            openUrl(postUrl);
+          }}
+        >
+          {widget}
+        </div>
+      );
+    }
     if (!title && !desc) return widget;
     return (
       <div>
diff --git a/frontend/src/app/pages/AgentChat/tool-ui/useOpenUrlInBrowserCard.ts b/frontend/src/app/pages/AgentChat/tool-ui/useOpenUrlInBrowserCard.ts
new file mode 100644
index 00000000..c148df31
--- /dev/null
+++ b/frontend/src/app/pages/AgentChat/tool-ui/useOpenUrlInBrowserCard.ts
@@ -0,0 +1,22 @@
+import { useCallback } from 'react';
+import { useDispatch, useStore } from 'react-redux';
+import { addBrowserCard, clearTiledCard } from '@/shared/state/dashboardLayoutSlice';
+import type { RootState } from '@/shared/state/store';
+
+/** Opens a widget link as an in-app browser card, leaving fullscreen first so the card is actually visible (ENG-234). */
+export function useOpenUrlInBrowserCard(): (url: string) => void {
+  const dispatch = useDispatch();
+  const store = useStore<RootState>();
+  return useCallback(
+    (url: string) => {
+      if (!/^https?:\/\//i.test(url)) return;
+      // Lazy read, no subscription: this fires on a click, and widgets must not re-render on every tile change.
+      const tiled = store.getState().dashboardLayout.tiledCards || {};
+      for (const [cardId, zone] of Object.entries(tiled)) {
+        if (zone === 'fullscreen') dispatch(clearTiledCard(cardId));
+      }
+      dispatch(addBrowserCard({ url }));
+    },
+    [dispatch, store],
+  );
+}
diff --git a/frontend/src/toolui/registry.tsx b/frontend/src/toolui/registry.tsx
index 2d4eecc6..d168fc28 100644
--- a/frontend/src/toolui/registry.tsx
+++ b/frontend/src/toolui/registry.tsx
@@ -11,9 +11,11 @@ export interface ToolUiEntry {
 /* Every entry lazy-loads both the component and its zod contract so the chat bundle only pays
    for components a transcript actually uses. Names mirror upstream tool-ui component slugs. */
 // The social-post components take their data nested as {post}; the wire props ARE the post.
-function wrapAsPost<P extends { id?: unknown }>(Inner: React.ComponentType<{ post: P }>): React.ComponentType<P> {
-  return function PostAdapter(props: P) {
-    return <Inner post={props} />;
+// onOpen is the component's own top-level prop, not part of the post payload; nesting it made every post unclickable (ENG-234).
+function wrapAsPost<P extends { id?: unknown }>(Inner: React.ComponentType<{ post: P; onOpen?: () => void }>): React.ComponentType<P & { onOpen?: () => void }> {
+  return function PostAdapter(props: P & { onOpen?: () => void }) {
+    const { onOpen, ...post } = props;
+    return <Inner post={post as unknown as P} onOpen={onOpen} />;
   };
 }