diff --git a/app/app/settings.py b/app/app/settings.py
index 89cfde3..dab5211 100644
--- a/app/app/settings.py
+++ b/app/app/settings.py
@@ -12,6 +12,8 @@
 
 from pathlib import Path
 
+from drf_yasg.openapi import Contact, Info
+
 from app import env
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
@@ -70,8 +72,11 @@
 # Application definition
 
 INSTALLED_APPS = [
+    'drf_yasg',
     'rest_framework',
 
+    'doc',
+
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',
@@ -162,3 +167,25 @@
 # https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+
+# drf-yasg settings
+# https://drf-yasg.readthedocs.io/en/stable/settings.html
+SWAGGER_SETTINGS = {
+    # NOTE: DEFAULT_INFO 설정을 해두어야 `generate_swagger` management command를 사용할 수 있음에 유의.
+    "DEFAULT_INFO": "app.settings.OPEN_API_INFO",
+}
+
+REDOC_SETTINGS = {
+    "LAZY_RENDERING": True,
+}
+
+OPEN_API_INFO = Info(
+    title="Time Limit Exceeded :: Authentication API",
+    default_version='v1',
+    description=(
+        "This API provides authentication endpoints and related features for the Time Limit Exceeded application, "
+        "including user login, registration, and token management."
+    ),
+    contact=Contact(email="hepheir@gmail.com"),
+)
diff --git a/app/app/urls.py b/app/app/urls.py
index 93599f7..83df3d1 100644
--- a/app/app/urls.py
+++ b/app/app/urls.py
@@ -15,8 +15,9 @@
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.contrib import admin
-from django.urls import path
+from django.urls import include, path
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('doc/', include('doc.urls')),
 ]
diff --git a/app/doc/__init__.py b/app/doc/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/doc/apps.py b/app/doc/apps.py
new file mode 100644
index 0000000..9f8fe2b
--- /dev/null
+++ b/app/doc/apps.py
@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class DocConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'doc'
diff --git a/app/doc/test_urls.py b/app/doc/test_urls.py
new file mode 100644
index 0000000..df6c66e
--- /dev/null
+++ b/app/doc/test_urls.py
@@ -0,0 +1,58 @@
+from django.test import TestCase, override_settings
+from rest_framework import status
+
+
+class DocEndpointsDebugModeTestCase(TestCase):
+    """DEBUG=True일 때 문서 엔드포인트 접근 가능 여부 테스트"""
+
+    @override_settings(DEBUG=True)
+    def test_swagger_ui_accessible_in_debug_mode(self):
+        """DEBUG 모드에서 Swagger UI 접근 가능"""
+        response = self.client.get('/doc/swagger/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    @override_settings(DEBUG=True)
+    def test_redoc_ui_accessible_in_debug_mode(self):
+        """DEBUG 모드에서 ReDoc UI 접근 가능"""
+        response = self.client.get('/doc/redoc/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    @override_settings(DEBUG=True)
+    def test_schema_json_accessible_in_debug_mode(self):
+        """DEBUG 모드에서 스키마 JSON 접근 가능"""
+        response = self.client.get('/doc/swagger.json/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    @override_settings(DEBUG=True)
+    def test_schema_yaml_accessible_in_debug_mode(self):
+        """DEBUG 모드에서 스키마 YAML 접근 가능"""
+        response = self.client.get('/doc/swagger.yaml/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+
+class DocEndpointsProductionModeTestCase(TestCase):
+    """DEBUG=False일 때 문서 엔드포인트 접근 제한 테스트"""
+
+    @override_settings(DEBUG=False, ALLOWED_HOSTS=['testserver'])
+    def test_swagger_ui_not_accessible_in_production(self):
+        """프로덕션 모드에서 Swagger UI 접근 불가"""
+        response = self.client.get('/doc/swagger/')
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+
+    @override_settings(DEBUG=False, ALLOWED_HOSTS=['testserver'])
+    def test_redoc_ui_not_accessible_in_production(self):
+        """프로덕션 모드에서 ReDoc UI 접근 불가"""
+        response = self.client.get('/doc/redoc/')
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+
+    @override_settings(DEBUG=False, ALLOWED_HOSTS=['testserver'])
+    def test_schema_json_not_accessible_in_production(self):
+        """프로덕션 모드에서 스키마 JSON 접근 불가"""
+        response = self.client.get('/doc/swagger.json/')
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+
+    @override_settings(DEBUG=False, ALLOWED_HOSTS=['testserver'])
+    def test_schema_yaml_not_accessible_in_production(self):
+        """프로덕션 모드에서 스키마 YAML 접근 불가"""
+        response = self.client.get('/doc/swagger.yaml/')
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
diff --git a/app/doc/urls.py b/app/doc/urls.py
new file mode 100644
index 0000000..7e60f73
--- /dev/null
+++ b/app/doc/urls.py
@@ -0,0 +1,26 @@
+"""
+URL configuration for doc app.
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/5.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.urls import path
+
+from . import views
+
+
+urlpatterns = [
+    path('swagger<str:format>/', views.schema_format_view),
+    path('swagger/', views.swagger_view),
+    path('redoc/', views.redoc_view),
+]
diff --git a/app/doc/views.py b/app/doc/views.py
new file mode 100644
index 0000000..c6be006
--- /dev/null
+++ b/app/doc/views.py
@@ -0,0 +1,24 @@
+from django.conf import settings
+from drf_yasg.views import get_schema_view
+from rest_framework.permissions import BasePermission
+
+
+class IsDebug(BasePermission):
+    """
+    Permission class that allows access only when Django's DEBUG mode is enabled.
+    Useful for restricting certain endpoints to development environments.
+    """
+    def has_permission(self, request, view):
+        return settings.DEBUG
+
+
+SchemaView = get_schema_view(
+    info=settings.OPEN_API_INFO,
+    permission_classes=[IsDebug],
+    public=True,
+)
+
+
+redoc_view = SchemaView.with_ui('redoc')
+swagger_view = SchemaView.with_ui('swagger')
+schema_format_view = SchemaView.without_ui()
diff --git a/requirements.txt b/requirements.txt
index bec54d2..85a5301 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 django
 djangorestframework
+drf-yasg
 pytest-django
 python-dotenv