diff --git a/backend/src/routes/authRouter.js b/backend/src/routes/authRouter.js
index caf0b954..65d8dfcf 100644
--- a/backend/src/routes/authRouter.js
+++ b/backend/src/routes/authRouter.js
@@ -5,6 +5,30 @@ import { validationMiddleware } from '../middleware/validationMiddleware.js';
 
 export const authRouter = express.Router();
 
+/**
+ * @swagger
+ * /api/auth/login:
+ *   post:
+ *     summary: User login
+ *     description: Logs in a user with their ID and password.
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             $ref: '#/components/schemas/LoginRequest'
+ *     responses:
+ *       200:
+ *         description: Successfully logged in
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/LoginResponse'
+ *       400:
+ *         description: Invalid input (e.g. invalid ID or password)
+ *       500:
+ *         description: Internal server error
+ */
 authRouter.post(
   '/login',
   [
diff --git a/backend/swaggerConfig.js b/backend/swaggerConfig.js
index 09ae4746..44349895 100644
--- a/backend/swaggerConfig.js
+++ b/backend/swaggerConfig.js
@@ -3,15 +3,46 @@ import swaggerJSDoc from 'swagger-jsdoc';
 const swaggerDefinition = {
   openapi: '3.0.0',
   info: {
-    title: 'Your API Name',
+    title: 'DDara API',
     version: '1.0.0',
-    description: 'API documentation for Your Project',
+    description: 'API documentation for DDara Project',
   },
   servers: [
     {
       url: 'http://localhost:3001',
     },
   ],
+  components: {
+    schemas: {
+      LoginRequest: {
+        type: 'object',
+        properties: {
+          id: {
+            type: 'string',
+            description: 'User ID',
+          },
+          password: {
+            type: 'string',
+            description: 'User password',
+          },
+        },
+      },
+      LoginResponse: {
+        type: 'object',
+        properties: {
+          token: {
+            type: 'string',
+            description: 'Authentication token',
+          },
+          userId: {
+            type: 'string',
+            description: 'User ID',
+          },
+        },
+      },
+    },
+  },
+  paths: {},
 };
 
 const options = {