diff --git a/apps/x/apps/renderer/src/App.tsx b/apps/x/apps/renderer/src/App.tsx
index b2bc9d7f..4b880c21 100644
--- a/apps/x/apps/renderer/src/App.tsx
+++ b/apps/x/apps/renderer/src/App.tsx
@@ -3151,6 +3151,26 @@ function App() {
       return
     }
 
+    // Top-level knowledge folders (except Notes) open as a bases view with folder filter
+    const parts = path.split('/')
+    if (parts.length === 2 && parts[0] === 'knowledge' && parts[1] !== 'Notes') {
+      const folderName = parts[1]
+      setBaseConfigByPath((prev) => ({
+        ...prev,
+        [BASES_DEFAULT_TAB_PATH]: {
+          ...DEFAULT_BASE_CONFIG,
+          name: folderName,
+          filters: [{ category: 'folder', value: folderName }],
+        },
+      }))
+      if (!selectedPath && !isGraphOpen && !selectedBackgroundTask) {
+        setIsChatSidebarOpen(false)
+        setIsRightPaneMaximized(false)
+      }
+      void navigateToView({ type: 'file', path: BASES_DEFAULT_TAB_PATH })
+      return
+    }
+
     const newExpanded = new Set(expandedPaths)
     if (newExpanded.has(path)) {
       newExpanded.delete(path)
diff --git a/apps/x/apps/renderer/src/components/sidebar-content.tsx b/apps/x/apps/renderer/src/components/sidebar-content.tsx
index a3dc0ea1..43791460 100644
--- a/apps/x/apps/renderer/src/components/sidebar-content.tsx
+++ b/apps/x/apps/renderer/src/components/sidebar-content.tsx
@@ -10,6 +10,7 @@ import {
   Copy,
   ExternalLink,
   FilePlus,
+  Folder,
   FolderPlus,
   AlertTriangle,
   HelpCircle,
@@ -1132,6 +1133,29 @@ function Tree({
     )
   }
 
+  // Top-level knowledge folders (except Notes) open bases view — render as flat items
+  const parts = item.path.split('/')
+  const isBasesFolder = isDir && parts.length === 2 && parts[0] === 'knowledge' && parts[1] !== 'Notes'
+
+  if (isBasesFolder) {
+    return (
+      <ContextMenu>
+        <ContextMenuTrigger asChild>
+          <SidebarMenuItem>
+            <SidebarMenuButton onClick={() => onSelect(item.path, item.kind)}>
+              <Folder className="size-4 shrink-0" />
+              <div className="flex w-full items-center gap-1 min-w-0">
+                <span className="min-w-0 flex-1 truncate">{item.name}</span>
+                <span className="text-xs text-sidebar-foreground/50 tabular-nums shrink-0">{countFiles(item)}</span>
+              </div>
+            </SidebarMenuButton>
+          </SidebarMenuItem>
+        </ContextMenuTrigger>
+        {contextMenuContent}
+      </ContextMenu>
+    )
+  }
+
   if (!isDir) {
     return (
       <ContextMenu>