diff --git a/README.md b/README.md
index f527907..6442f64 100644
--- a/README.md
+++ b/README.md
@@ -26,22 +26,15 @@ createApp(App).mount();
 
 ```vue
 <!-- src/App.vue -->
-<script lang="ts">
-import { shallowRef, defineComponent } from "vue";
+<script setup lang="ts">
+import { shallowRef } from "vue";
 import { Box, Text, useInput } from "@vue-tui/runtime";
 
-export default defineComponent({
-  components: { Box, Text },
-  setup() {
-    const count = shallowRef(0);
+const count = shallowRef(0);
 
-    useInput((input) => {
-      if (input === "+") count.value++;
-      if (input === "-") count.value--;
-    });
-
-    return { count };
-  },
+useInput((input) => {
+  if (input === "+") count.value++;
+  if (input === "-") count.value--;
 });
 </script>
 
diff --git a/examples/coding-agent/src/agent.ts b/examples/coding-agent/src/agent.ts
index 8583214..9355ff5 100644
--- a/examples/coding-agent/src/agent.ts
+++ b/examples/coding-agent/src/agent.ts
@@ -23,10 +23,16 @@ export interface AgentOptions {
   requestApproval: (command: string) => Promise<boolean>;
 }
 
-const client = new OpenAI({
-  apiKey: process.env["DEEPSEEK_API_KEY"],
-  baseURL: "https://api.deepseek.com",
-});
+let client: OpenAI | undefined;
+function getClient(): OpenAI {
+  if (!client) {
+    client = new OpenAI({
+      apiKey: process.env["DEEPSEEK_API_KEY"],
+      baseURL: "https://api.deepseek.com",
+    });
+  }
+  return client;
+}
 
 const BASH_TOOL = {
   type: "function" as const,
@@ -83,7 +89,7 @@ export async function runAgentLoop(
   messages = [...messages, { role: "user", content: userMessage }];
 
   while (true) {
-    const stream = await client.chat.completions.create({
+    const stream = await getClient().chat.completions.create({
       model: "deepseek-v4-pro",
       messages: [
         { role: "system", content: SYSTEM_PROMPT },