diff --git a/src/pages/ChatPage.jsx b/src/pages/ChatPage.jsx
index 6d50111..9946539 100644
--- a/src/pages/ChatPage.jsx
+++ b/src/pages/ChatPage.jsx
@@ -4,6 +4,7 @@ import DevChatInput from '../tools/dev_chatbot/ChatInput.jsx';
 import { marked } from 'marked';
 marked.setOptions({ mangle:false, headerIds:false });
 import { fetchOpenAIChat, fetchOpenAIImage, classifyRequest } from '../services/openaiService';
+import { useAuth } from '../context/AuthContext';
 import { API_BASE_URL } from '../config';
 
 // === Chat History Panel 컴포넌트 추가 ===
@@ -100,6 +101,7 @@ function FileSidebar() {
 
 export default function ChatPage() {
   const { selectedTool } = useTool();
+  const { user } = useAuth();
   const [messages, setMessages] = useState(() => {
     try {
       const toolIdInitial = selectedTool?.id || 'chatgpt';
@@ -171,6 +173,10 @@ export default function ChatPage() {
   }
 
   const sendMessage = async () => {
+    if (!user) {
+      alert('로그인이 필요합니다');
+      return;
+    }
     if (!input.trim()) return;
     const userMsg = { type: 'user', content: input.trim(), time: new Date().toLocaleTimeString() };
     setMessages((prev) => [...prev, userMsg]);
@@ -429,6 +435,7 @@ function DocTranslationSidebar() {
 }
 
 function DocTranslationChat() {
+  const { user } = useAuth();
   const { selectedTool } = useTool();
   const [messages, setMessages] = useState([]);
   const [input, setInput] = useState('');
@@ -450,6 +457,10 @@ function DocTranslationChat() {
   }, [messages]);
 
   const sendMessage = async () => {
+    if (!user) {
+      alert('로그인이 필요합니다');
+      return;
+    }
     if (!input.trim()) return;
     const userMsg = { type: 'user', content: input.trim(), time: new Date().toLocaleTimeString() };
     setMessages((prev) => [...prev, userMsg, { type: 'loading', start: Date.now() }]);
diff --git a/src/tools/dev_chatbot/ChatInput.jsx b/src/tools/dev_chatbot/ChatInput.jsx
index f47a01b..a935c32 100644
--- a/src/tools/dev_chatbot/ChatInput.jsx
+++ b/src/tools/dev_chatbot/ChatInput.jsx
@@ -1,11 +1,13 @@
 import React, { useState, useRef, useEffect } from 'react';
 import { ChatHandler } from './ChatHandler';
 import { useTool } from '../../context/ToolContext';
+import { useAuth } from '../../context/AuthContext';
 import { marked } from 'marked';
 marked.setOptions({ mangle:false, headerIds:false });
 
 export default function DevChatInput() {
   const { selectedTool } = useTool();
+  const { user } = useAuth();
   const [inputText, setInputText] = useState('');
   const inputRef = useRef(null);
   const [selectedFiles, setSelectedFiles] = useState([]);
@@ -40,6 +42,10 @@ export default function DevChatInput() {
   const handleFileRemove = (idx) => setSelectedFiles((prev) => prev.filter((_, i) => i !== idx));
 
   const handleSend = async () => {
+    if (!user) {
+      alert('로그인이 필요합니다');
+      return;
+    }
     if (!inputText && selectedFiles.length === 0) return;
     setLoading(true);
     const userMessage = { text: inputText, files: selectedFiles, sender: 'user', time: new Date().toLocaleTimeString() };