diff --git a/src/components/feed/Feed.tsx b/src/components/feed/Feed.tsx
index 502c70a..03f255d 100644
--- a/src/components/feed/Feed.tsx
+++ b/src/components/feed/Feed.tsx
@@ -1,7 +1,7 @@
 import { useEffect, useState } from "react";
 import { useFeedStore } from "../../stores/feed";
 import { useUserStore } from "../../stores/user";
-import { fetchFollowFeed } from "../../lib/nostr";
+import { fetchFollowFeed, getNDK } from "../../lib/nostr";
 import { NoteCard } from "./NoteCard";
 import { ComposeBox } from "./ComposeBox";
 import { NDKEvent } from "@nostr-dev-kit/ndk";
@@ -95,7 +95,7 @@ export function Feed() {
       </header>
 
       {/* Compose */}
-      {loggedIn && <ComposeBox onPublished={loadFeed} />}
+      {loggedIn && !!getNDK().signer && <ComposeBox onPublished={loadFeed} />}
 
       {/* Feed */}
       <div className="flex-1 overflow-y-auto">
diff --git a/src/components/feed/NoteCard.tsx b/src/components/feed/NoteCard.tsx
index c1b5759..fe5a1bc 100644
--- a/src/components/feed/NoteCard.tsx
+++ b/src/components/feed/NoteCard.tsx
@@ -5,7 +5,7 @@ import { useReactionCount } from "../../hooks/useReactionCount";
 import { useUserStore } from "../../stores/user";
 import { useUIStore } from "../../stores/ui";
 import { timeAgo, shortenPubkey } from "../../lib/utils";
-import { publishReaction, publishReply } from "../../lib/nostr";
+import { publishReaction, publishReply, getNDK } from "../../lib/nostr";
 import { NoteContent } from "./NoteContent";
 import { ZapModal } from "../zap/ZapModal";
 
@@ -122,7 +122,7 @@ export function NoteCard({ event }: NoteCardProps) {
           </div>
 
           {/* Actions */}
-          {loggedIn && (
+          {loggedIn && !!getNDK().signer && (
             <div className="flex items-center gap-4 mt-2">
               <button
                 onClick={handleReply}
diff --git a/src/components/sidebar/Sidebar.tsx b/src/components/sidebar/Sidebar.tsx
index 9ccee53..1ff3f2e 100644
--- a/src/components/sidebar/Sidebar.tsx
+++ b/src/components/sidebar/Sidebar.tsx
@@ -2,6 +2,7 @@ import { useState } from "react";
 import { useUIStore } from "../../stores/ui";
 import { useFeedStore } from "../../stores/feed";
 import { useUserStore } from "../../stores/user";
+import { getNDK } from "../../lib/nostr";
 import { LoginModal } from "../shared/LoginModal";
 import { shortenPubkey } from "../../lib/utils";
 
@@ -44,7 +45,7 @@ export function Sidebar() {
 
         {/* Nav */}
         <nav className="flex-1 overflow-y-auto py-2">
-          {loggedIn && !sidebarCollapsed && (
+          {loggedIn && !!getNDK().signer && !sidebarCollapsed && (
             <button
               onClick={() => setView("article-editor")}
               className={`w-full text-left px-3 py-1.5 flex items-center gap-2 text-[12px] transition-colors mb-1 ${