diff --git a/.eslintrc.cjs b/.eslintrc.cjs
index cb965c2..3bc3d6e 100644
--- a/.eslintrc.cjs
+++ b/.eslintrc.cjs
@@ -38,7 +38,7 @@ module.exports = {
                     {
                         name: "react-redux",
                         importNames: ["useSelector", "useStore", "useDispatch"],
-                        message: "Please use pre-typed versions from `src/app/hooks.ts` instead.",
+                        message: "Please use pre-typed versions from `src/hooks/store.ts` instead.",
                     },
                 ],
             },
diff --git a/src/app/services/api.ts b/src/app/services/api.ts
new file mode 100644
index 0000000..8e677bc
--- /dev/null
+++ b/src/app/services/api.ts
@@ -0,0 +1,20 @@
+import { createApi, fetchBaseQuery, retry } from "@reduxjs/toolkit/query/react";
+import type { RootState } from "../store";
+
+import type { Wrap } from "./base";
+
+const baseQuery = fetchBaseQuery({
+    baseUrl: import.meta.env.MODE === "production" ? "/api/v1" : "http://127.0.0.1:8000/api/v1",
+    prepareHeaders: (headers, { getState }) => {
+        const token = (getState() as RootState).auth.token;
+        if (token) headers.set("Authorization", `Bearer ${token}`);
+        return headers;
+    },
+    validateStatus: (response, result: Wrap<unknown>) => response.status === 200 && result.code === 0,
+});
+
+export const api = createApi({
+    baseQuery: retry(baseQuery, { maxRetries: 6 }),
+    tagTypes: ["User", "Status", "Submission"],
+    endpoints: () => ({}),
+});
diff --git a/src/app/services/base.ts b/src/app/services/base.ts
new file mode 100644
index 0000000..e4af929
--- /dev/null
+++ b/src/app/services/base.ts
@@ -0,0 +1,17 @@
+export interface Wrap<T> {
+    code: number;
+    msg: string;
+    body: T;
+}
+
+export interface WithCount<T> {
+    count: number;
+    data: T[];
+}
+
+export interface Meta {
+    ID: number;
+    CreatedAt: Date;
+    UpdatedAt: Date;
+    DeletedAt: Date;
+}
diff --git a/src/app/services/user.ts b/src/app/services/user.ts
new file mode 100644
index 0000000..567959f
--- /dev/null
+++ b/src/app/services/user.ts
@@ -0,0 +1,66 @@
+import type { Meta, Wrap } from "./base";
+import { api } from "./api";
+
+export enum UserRole {
+    RoleAdmin = 30,
+    RoleUser = 20,
+    RoleGuest = 10,
+}
+
+export interface UserRequest {
+    email?: string;
+    password?: string;
+    nickname?: string;
+    uid?: number;
+}
+
+export interface UserLoginResponse {
+    nickname: string;
+    token: string;
+}
+
+export interface UserProfile {
+    meta: Meta;
+    email: string;
+    nick_name: string;
+    role: number;
+    is_enabled: boolean;
+}
+
+export const userApi = api.injectEndpoints({
+    endpoints: (builder) => ({
+        create: builder.mutation<Wrap<string>, UserRequest>({
+            query: (data: UserRequest) => ({
+                url: "/user/create",
+                method: "POST",
+                body: data,
+            }),
+            invalidatesTags: ["User", "Status", "Submission"],
+        }),
+        login: builder.mutation<Wrap<UserLoginResponse>, UserRequest>({
+            query: (data: UserRequest) => ({
+                url: "/user/login",
+                method: "POST",
+                body: data,
+            }),
+            invalidatesTags: ["User", "Status", "Submission"],
+        }),
+        logout: builder.mutation<Wrap<void>, void>({
+            query: () => ({
+                url: "/user/logout",
+                method: "POST",
+            }),
+            invalidatesTags: ["User", "Status", "Submission"],
+        }),
+        profile: builder.query<Wrap<UserProfile>, UserRequest>({
+            query: (data: UserRequest) => ({
+                url: "/user/profile",
+                method: "POST",
+                body: data,
+            }),
+            providesTags: ["User"],
+        }),
+    }),
+});
+
+export const { useCreateMutation, useLoginMutation, useLogoutMutation, useProfileQuery } = userApi;
diff --git a/src/app/store.ts b/src/app/store.ts
index dc555f7..f8100e7 100644
--- a/src/app/store.ts
+++ b/src/app/store.ts
@@ -2,17 +2,23 @@ import type { Action, ThunkAction } from "@reduxjs/toolkit";
 import { combineSlices, configureStore } from "@reduxjs/toolkit";
 import { setupListeners } from "@reduxjs/toolkit/query";
 
+import { userApi } from "./services/user";
+
 import { counterSlice } from "../features/counter/counterSlice";
 import { quotesApiSlice } from "../features/quotes/quotesApiSlice";
 
-const rootReducer = combineSlices(counterSlice, quotesApiSlice);
+const dataSlices = [counterSlice];
+const middlewareSlices = [quotesApiSlice, userApi];
+const slices = [...dataSlices, ...middlewareSlices];
+
+const rootReducer = combineSlices(...slices);
 export type RootState = ReturnType<typeof rootReducer>;
 
 export const makeStore = (preloadedState?: Partial<RootState>) => {
     const store = configureStore({
         reducer: rootReducer,
         middleware: (getDefaultMiddleware) => {
-            return getDefaultMiddleware().concat(quotesApiSlice.middleware);
+            return getDefaultMiddleware().concat(middlewareSlices.map((x) => x.middleware));
         },
         preloadedState,
     });
diff --git a/src/features/counter/Counter.tsx b/src/features/counter/Counter.tsx
index aace700..6be7255 100644
--- a/src/features/counter/Counter.tsx
+++ b/src/features/counter/Counter.tsx
@@ -1,6 +1,6 @@
 import { useState } from "react";
 
-import { useAppDispatch, useAppSelector } from "../../app/hooks";
+import { useAppDispatch, useAppSelector } from "../../hooks/store";
 import styles from "./Counter.module.css";
 import {
     decrement,
diff --git a/src/app/hooks.ts b/src/hooks/store.ts
similarity index 80%
rename from src/app/hooks.ts
rename to src/hooks/store.ts
index 90c9339..bf229e9 100644
--- a/src/app/hooks.ts
+++ b/src/hooks/store.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-restricted-imports */
 import { useDispatch, useSelector } from "react-redux";
-import type { AppDispatch, RootState } from "./store";
+import type { AppDispatch, RootState } from "../app/store";
 
 export const useAppDispatch = useDispatch.withTypes<AppDispatch>();
 export const useAppSelector = useSelector.withTypes<RootState>();