diff --git a/.env.example b/.env.example
index 549c3f7..06cb656 100644
--- a/.env.example
+++ b/.env.example
@@ -1,4 +1,5 @@
 # Retrieve your API Key and Policy ID from the smart wallets dashboard default configuration or create new keys: https://dashboard.alchemy.com/services/smart-wallets/configuration
 NEXT_PUBLIC_ALCHEMY_API_KEY=YOUR_APP_API_KEY # Get your app API key: https://dashboard.alchemy.com/apps
 NEXT_PUBLIC_ALCHEMY_POLICY_ID=YOUR_SPONSORSHIP_POLICY_ID # Get your gas sponsorship policy ID: https://dashboard.alchemy.com/services/gas-manager/configuration
+NEXT_PUBLIC_CHAIN_ID=ARB_SEPOLIA # Network identifier (e.g., ARB_SEPOLIA, ETH_MAINNET, POLYGON, OPTIMISM, BASE_SEPOLIA, etc)
 # NOTE: make sure to set up a smart wallet configuration for your app to enable login
\ No newline at end of file
diff --git a/README.md b/README.md
index e21a44d..018c431 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Use this template to get started with **embedded smart wallets** using [Alchemy
 - Email, passkey & social login using pre‑built UI components
 - Flexible, secure, and cheap smart accounts
 - Gasless transactions powered by ERC-4337 Account Abstraction
-- One‑click NFT mint on Arbitrum Sepolia (no ETH required)
+- One‑click NFT mint (no ETH required)
 - Server‑side rendering ready – session persisted with cookies
 - TailwindCSS + shadcn/ui components, React Query, TypeScript
 
@@ -15,7 +15,7 @@ Use this template to get started with **embedded smart wallets** using [Alchemy
 
 ## 📍 Network & Demo Contract
 
-This quickstart is configured to run on **Arbitrum Sepolia** testnet. A free demo NFT contract has been deployed specifically for this quickstart, allowing you to mint NFTs without any setup or deployment steps. The contract is pre-configured and ready to use out of the box.
+This quickstart is configured to run on **Arbitrum Sepolia** testnet, by default. A free demo NFT contract has been deployed specifically for this quickstart, allowing you to mint NFTs without any setup or deployment steps. The contract is pre-configured and ready to use out of the box.
 
 ## 🚀 Quick start
 
@@ -75,7 +75,7 @@ tailwind.config.ts
 
 ## 🏗️ How it works
 
-1. `config.ts` initializes Account Kit with your API key, Arbitrum Sepolia chain, and Gas Sponsorship policy.
+1. `config.ts` initializes Account Kit with your API key, chain, and Gas Sponsorship policy.
 2. `Providers` wraps the app with `AlchemyAccountProvider` & React Query.
 3. `LoginCard` opens the authentication modal (`useAuthModal`).
 4. After login, `useSmartAccountClient` exposes the smart wallet.
diff --git a/config.ts b/config.ts
index c33ab99..73dc8a9 100644
--- a/config.ts
+++ b/config.ts
@@ -3,7 +3,7 @@ import {
   cookieStorage,
   createConfig,
 } from "@account-kit/react";
-import { alchemy, arbitrumSepolia } from "@account-kit/infra";
+import { alchemy, arbitrum, arbitrumGoerli, arbitrumNova, arbitrumSepolia, base, baseGoerli, baseSepolia, fraxtal, fraxtalSepolia, goerli, mainnet, optimism, optimismGoerli, optimismSepolia, polygon, polygonAmoy, polygonMumbai, sepolia, shape, shapeSepolia, worldChain, worldChainSepolia, zora, zoraSepolia, beraChainBartio, opbnbMainnet, opbnbTestnet, soneiumMinato, soneiumMainnet, unichainMainnet, unichainSepolia, inkMainnet, inkSepolia, mekong, monadTestnet, openlootSepolia, gensynTestnet, riseTestnet, storyMainnet, storyAeneid, celoAlfajores, celoMainnet, teaSepolia, bobaSepolia, bobaMainnet } from "@account-kit/infra";
 import { QueryClient } from "@tanstack/react-query";
 
 const API_KEY = process.env.NEXT_PUBLIC_ALCHEMY_API_KEY;
@@ -16,6 +16,61 @@ if (!SPONSORSHIP_POLICY_ID) {
   throw new Error("NEXT_PUBLIC_ALCHEMY_POLICY_ID is not set");
 }
 
+const CHAIN_ID = process.env.NEXT_PUBLIC_CHAIN_ID || "abitrumSepolia";
+
+const allChains = {
+  arbitrum,
+  arbitrumGoerli,
+  arbitrumNova,
+  arbitrumSepolia,
+  base,
+  baseGoerli,
+  baseSepolia,
+  fraxtal,
+  fraxtalSepolia,
+  goerli,
+  mainnet,
+  optimism,
+  optimismGoerli,
+  optimismSepolia,
+  polygon,
+  polygonAmoy,
+  polygonMumbai,
+  sepolia,
+  shape,
+  shapeSepolia,
+  worldChain,
+  worldChainSepolia,
+  zora,
+  zoraSepolia,
+  beraChainBartio,
+  opbnbMainnet,
+  opbnbTestnet,
+  soneiumMinato,
+  soneiumMainnet,
+  unichainMainnet,
+  unichainSepolia,
+  inkMainnet,
+  inkSepolia,
+  mekong,
+  monadTestnet,
+  openlootSepolia,
+  gensynTestnet,
+  riseTestnet,
+  storyMainnet,
+  storyAeneid,
+  celoAlfajores,
+  celoMainnet,
+  teaSepolia,
+  bobaSepolia,
+  bobaMainnet
+}
+
+const chain = allChains[CHAIN_ID as keyof typeof allChains];
+if (!chain) {
+  throw new Error(`Unsupported chain ID: ${CHAIN_ID}. Supported chains: ${Object.keys(allChains).join(", ")}`);
+}
+
 const uiConfig: AlchemyAccountsUIConfig = {
   illustrationStyle: "outline",
   auth: {
@@ -34,8 +89,7 @@ const uiConfig: AlchemyAccountsUIConfig = {
 export const config = createConfig(
   {
     transport: alchemy({ apiKey: API_KEY }),
-    // Note: This quickstart is configured for Arbitrum Sepolia.
-    chain: arbitrumSepolia,
+    chain,
     ssr: true, // more about ssr: https://www.alchemy.com/docs/wallets/react/ssr
     storage: cookieStorage, // more about persisting state with cookies: https://www.alchemy.com/docs/wallets/react/ssr#persisting-the-account-state
     enablePopupOauth: true, // must be set to "true" if you plan on using popup rather than redirect in the social login flow