diff --git a/src/main/java/kr/re/etri/autoflow/controllers/AuthController.java b/src/main/java/kr/re/etri/autoflow/controllers/AuthController.java
index 2de8477..2532e0c 100644
--- a/src/main/java/kr/re/etri/autoflow/controllers/AuthController.java
+++ b/src/main/java/kr/re/etri/autoflow/controllers/AuthController.java
@@ -109,10 +109,10 @@ public class AuthController {
   @PostMapping("/signup")
   public ResponseEntity<?> registerUser(@Valid @RequestBody SignupRequest signUpRequest) {
     if (userRepository.existsByUsername(signUpRequest.getUsername())) {
-      return ResponseEntity.badRequest().body(new MessageResponse("오류: 이미 사용 중인 사용자 이름입니다."));
+      return ResponseEntity.badRequest().body(new MessageResponse(false,"오류: 이미 사용 중인 사용자 이름입니다."));
     }
     if (userRepository.existsByEmail(signUpRequest.getEmail())) {
-      return ResponseEntity.badRequest().body(new MessageResponse("오류: 이미 사용 중인 이메일입니다."));
+      return ResponseEntity.badRequest().body(new MessageResponse(false,"오류: 이미 사용 중인 이메일입니다."));
     }
 
     User user = new User(
@@ -135,14 +135,14 @@ public class AuthController {
                 .orElseThrow(() -> new RuntimeException("오류: '" + roleName + "' 역할이 DB에 존재하지 않습니다."));
         roles.add(role);
       } catch (IllegalArgumentException e) {
-        return ResponseEntity.badRequest().body(new MessageResponse("오류: '" + roleName + "' 역할은 유효하지 않습니다."));
+        return ResponseEntity.badRequest().body(new MessageResponse(false,"오류: '" + roleName + "' 역할은 유효하지 않습니다."));
       }
     }
 
     user.setRoles(roles);
     userRepository.save(user);
 
-    return ResponseEntity.ok(new MessageResponse("사용자 등록이 완료되었습니다."));
+    return ResponseEntity.ok(new MessageResponse(true,"사용자 등록이 완료되었습니다."));
   }
 
 
@@ -165,7 +165,7 @@ public class AuthController {
     return ResponseEntity.ok()
             .header(HttpHeaders.SET_COOKIE, jwtCookie.toString())
             .header(HttpHeaders.SET_COOKIE, jwtRefreshCookie.toString())
-            .body(new MessageResponse("You've been signed out!"));
+            .body(new MessageResponse(true,"You've been signed out!"));
   }
 
   @Operation(summary = "토큰 갱신", description = "쿠키에 저장된 리프레시 토큰을 통해 새로운 엑세스 토큰을 발급합니다.")
@@ -185,11 +185,11 @@ public class AuthController {
                 ResponseCookie jwtCookie = jwtUtils.generateJwtCookie(user);
                 return ResponseEntity.ok()
                         .header(HttpHeaders.SET_COOKIE, jwtCookie.toString())
-                        .body(new MessageResponse("Token is refreshed successfully!"));
+                        .body(new MessageResponse(true,"Token is refreshed successfully!"));
               })
               .orElseThrow(() -> new TokenRefreshException(refreshToken, "Refresh token is not in database!"));
     }
 
-    return ResponseEntity.badRequest().body(new MessageResponse("Refresh Token is empty!"));
+    return ResponseEntity.badRequest().body(new MessageResponse(false,"Refresh Token is empty!"));
   }
 }
diff --git a/src/main/java/kr/re/etri/autoflow/controllers/ProjectController.java b/src/main/java/kr/re/etri/autoflow/controllers/ProjectController.java
index 6bc5295..81a8341 100644
--- a/src/main/java/kr/re/etri/autoflow/controllers/ProjectController.java
+++ b/src/main/java/kr/re/etri/autoflow/controllers/ProjectController.java
@@ -18,6 +18,7 @@ import org.springframework.web.bind.annotation.ModelAttribute;
 import java.util.List;
 
 @Tag(name = "프로젝트 API", description = "Project CRUD 기능 제공")
+@CrossOrigin(origins = "*", maxAge = 3600)
 @RestController
 @RequestMapping("/api/projects")
 @RequiredArgsConstructor
diff --git a/src/main/java/kr/re/etri/autoflow/payload/response/MessageResponse.java b/src/main/java/kr/re/etri/autoflow/payload/response/MessageResponse.java
index 21a1439..c0db359 100644
--- a/src/main/java/kr/re/etri/autoflow/payload/response/MessageResponse.java
+++ b/src/main/java/kr/re/etri/autoflow/payload/response/MessageResponse.java
@@ -8,5 +8,6 @@ import lombok.Setter;
 @Setter
 @AllArgsConstructor
 public class MessageResponse {
+	private boolean success;
 	private String message;
 }