diff --git a/src/components/codecast/api/collab.js b/src/components/codecast/api/collab.js
index f1d7e7c..9a994cb 100644
--- a/src/components/codecast/api/collab.js
+++ b/src/components/codecast/api/collab.js
@@ -3,8 +3,7 @@ import config from "../../../config";
 export async function createRoom({ token, name /*, code*/ }) {
     if (!token) throw new Error("NO_TOKEN");
 
-    // const url = `${config.API_BASE_URL}/api/collab/rooms`;
-    const url = `http://52.79.145.160:8080/api/collab/rooms`;
+    const url = `${config.API_BASE_URL}/api/collab/rooms`;
 
     // 스웨거 기준 roomName만 전송
     const body = { roomName: name };
diff --git a/src/components/codecast/api/roomAdmin.js b/src/components/codecast/api/roomAdmin.js
index 56ce0c8..03ec4d7 100644
--- a/src/components/codecast/api/roomAdmin.js
+++ b/src/components/codecast/api/roomAdmin.js
@@ -1,5 +1,7 @@
 // src/components/codecast/api/roomAdmin.js
-const API_BASE = process.env.REACT_APP_API_BASE_URL || 'http://52.79.145.160:8080';
+import config from "../../../config";
+
+const API_BASE = process.env.REACT_APP_API_BASE_URL || config.API_BASE_URL;
 
 async function req(path, { method = 'GET', token, body } = {}) {
     const res = await fetch(`${API_BASE}${path}`, {
diff --git a/src/components/codecast/api/sessions.js b/src/components/codecast/api/sessions.js
index e2e5a27..ab06b36 100644
--- a/src/components/codecast/api/sessions.js
+++ b/src/components/codecast/api/sessions.js
@@ -2,8 +2,7 @@
 import config from "../../../config";
 
 export async function createSession({ token, roomId, fileName, language }) {
-    // const url = `${config.API_BASE_URL}/api/collab/rooms/${roomId}/sessions`;
-    const url = `http://52.79.145.160:8080/api/collab/rooms/${roomId}/sessions`;
+    const url = `${config.API_BASE_URL}/api/collab/rooms/${roomId}/sessions`;
 
     const res = await fetch(url, {
         method: "POST",
diff --git a/src/components/codecast/hooks/useCollabSocket.js b/src/components/codecast/hooks/useCollabSocket.js
index 6ef30c7..03e6d70 100644
--- a/src/components/codecast/hooks/useCollabSocket.js
+++ b/src/components/codecast/hooks/useCollabSocket.js
@@ -2,6 +2,9 @@
 import { useRef, useCallback } from "react";
 import SockJS from "sockjs-client";
 import { Client } from "@stomp/stompjs";
+import config from "../../../config";
+
+const COLLAB_SOCKET_URL = `${config.API_BASE_URL}/ws-collab`;
 
 /**
  * STOMP/SockJS 래퍼 훅 (견고 버전)
@@ -63,8 +66,7 @@ export default function useCollabSocket() {
         isConnectingRef.current = true;
 
         return new Promise((resolve, reject) => {
-            const sockUrl = `http://52.79.145.160:8080/ws-collab`; // 필요시 config로 이동
-            const sock = new SockJS(sockUrl);
+            const sock = new SockJS(COLLAB_SOCKET_URL);
 
             const client = new Client({
                 webSocketFactory: () => sock,