diff --git a/src/api/infra/gitHub/gitHubClient.ts b/src/api/infra/gitHub/gitHubClient.ts
index 8dc04d9..2fb4059 100644
--- a/src/api/infra/gitHub/gitHubClient.ts
+++ b/src/api/infra/gitHub/gitHubClient.ts
@@ -7,13 +7,16 @@ import type {
 } from "./types";
 
 export function createGitHubClient(config: GitHubConfig) {
-  const request = async (url: string, token: string): Promise<unknown> => {
-    const response = await fetch(url, {
-      headers: {
-        Accept: config.mediaType,
-        Authorization: `token ${token}`,
-      },
-    });
+  const request = async (url: string, token?: string): Promise<unknown> => {
+    const headers: Record<string, string> = {
+      Accept: config.mediaType,
+    };
+
+    if (token) {
+      headers.Authorization = `token ${token}`;
+    }
+
+    const response = await fetch(url, { headers });
 
     if (!response.ok) {
       throw new Error(
@@ -48,7 +51,6 @@ export function createGitHubClient(config: GitHubConfig) {
     ): Promise<GitHubTree[]> =>
       request(
         `${config.baseUrl}/repos/${owner}/${repo}/git/trees/${treeSha}?recursive=${recursive}`,
-        config.token,
       ).then((response) => (response as GitHubTreeResponse).tree),
   };
 }
diff --git a/src/components/Leaderboard/Leaderboard.stories.tsx b/src/components/Leaderboard/Leaderboard.stories.tsx
index e413573..f981a9e 100644
--- a/src/components/Leaderboard/Leaderboard.stories.tsx
+++ b/src/components/Leaderboard/Leaderboard.stories.tsx
@@ -1,4 +1,5 @@
 import type { Meta, StoryObj } from "@storybook/react";
+import { http, HttpResponse } from "msw";
 import Leaderboard from "./Leaderboard";
 
 const meta = {
@@ -7,4 +8,74 @@ const meta = {
 
 export default meta;
 
-export const Default: StoryObj<typeof meta> = {};
+export const Default: StoryObj<typeof meta> = {
+  parameters: {
+    msw: {
+      handlers: [
+        http.get("https://api.github.com/orgs/DaleStudy/teams", () =>
+          HttpResponse.json([{ name: "leetcode01" }, { name: "leetcode02" }]),
+        ),
+        http.get(
+          "https://api.github.com/orgs/DaleStudy/teams/leetcode01/members",
+          () =>
+            HttpResponse.json([
+              {
+                login: "sounmind",
+                avatar_url:
+                  "https://avatars.githubusercontent.com/u/37020415?v=4",
+              },
+              {
+                login: "yolophg",
+                avatar_url:
+                  "https://avatars.githubusercontent.com/u/38199103?v=4",
+              },
+              {
+                login: "SamTheKorean",
+                avatar_url:
+                  "https://avatars.githubusercontent.com/u/104721736?v=4",
+              },
+            ]),
+        ),
+        http.get(
+          "https://api.github.com/orgs/DaleStudy/teams/leetcode02/members",
+          () =>
+            HttpResponse.json([
+              {
+                login: "Sunjae95",
+                avatar_url:
+                  "https://avatars.githubusercontent.com/u/63578094?v=4",
+              },
+              {
+                login: "HC-kang",
+                id: 81678439,
+                node_id: "MDQ6VXNlcjgxNjc4NDM5",
+                avatar_url:
+                  "https://avatars.githubusercontent.com/u/81678439?v=4",
+                gravatar_id: "",
+                url: "https://api.github.com/users/HC-kang",
+                html_url: "https://github.com/HC-kang",
+                followers_url: "https://api.github.com/users/HC-kang/followers",
+                following_url:
+                  "https://api.github.com/users/HC-kang/following{/other_user}",
+                gists_url:
+                  "https://api.github.com/users/HC-kang/gists{/gist_id}",
+                starred_url:
+                  "https://api.github.com/users/HC-kang/starred{/owner}{/repo}",
+                subscriptions_url:
+                  "https://api.github.com/users/HC-kang/subscriptions",
+                organizations_url: "https://api.github.com/users/HC-kang/orgs",
+                repos_url: "https://api.github.com/users/HC-kang/repos",
+                events_url:
+                  "https://api.github.com/users/HC-kang/events{/privacy}",
+                received_events_url:
+                  "https://api.github.com/users/HC-kang/received_events",
+                type: "User",
+                user_view_type: "public",
+                site_admin: false,
+              },
+            ]),
+        ),
+      ],
+    },
+  },
+};