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Quick Start: HTML/CSS/JS Apps

Web3 apps built using 'HTML/CSS/JS' can easily onboard users via social login by integrating with the Arcana Auth SDK!

1. Register & Configure

2. Install SDK

For 'HTML/CSS/JS' app, install the auth package.

npm install --save @arcana/auth
yarn add @arcana/auth
<script src=""></script>
<script src=""></script>

Use latest SDKs

Use the latest Arcana Auth SDK release: v1.0.10. Migrate from Arcana Auth SDK v1.0.9 -> v1.0.10.

Versions older than Arcana Auth SDK v1.0.9 may encounter potential breaking changes that require app reconfiguration, integration code updates, and redeployment. Refer to the Migration Guides and Release Notes.

3. Integrate

Import AuthProvider from the auth package.

import { AuthProvider } from '@arcana/auth'

Create a new AuthProvider and specify the unique Client ID obtained earlier during app registration.

const auth = new AuthProvider(
  "xar_test_445007f942xxxxxxxxxxxxxxxxxx484cAfd2", // App client ID
    position: 'left',         // default: right
    theme: 'light',           // default: dark
    alwaysVisible: false,     // default: true, wallet always visible
    setWindowProvider: true,  // default: false, window.ethereum not set
    connectOptions: {
      compact: true           // default: false, regular plug-and-play login UI
    chainConfig: {
      chainId: '137',                    // defaults to Ethereum
      rpcUrl: '', // defaults to ''

Initialize the newly instantiated AuthProvider.

try {
  await auth.init()
} catch (e) {
  // Handle exception case

Initialize First!

The app must use await until the init() call is complete, before invoking any of the other Arcana Auth SDK functions.

AuthProvider Optional Parameters

Besides Client ID input parameter, you can optionally customize these settings in the AuthProvider constructor:

position: wallet position within the app context - left|right

theme: wallet theme - light|dark

connectOptions: built-in login UI compact mode - true|false

See AuthProvider constructor parameters for details.

After initializing the AuthProvider, you can call any of its exported functions. See Arcana Auth SDK Reference Guide for details.

Next, add code to facilitate user onboarding in the app.

Onboard Users

The built-in, plug-and-play login UI is enabled by default. To use it, just add a single line of code in the app, call the connect function of the AuthProvider.

await auth.connect();

This will bring up the login modal displaying the onboarding options configured for the app in addition to the passwordless option.

Plug-and-Play Login UI
Plug-and-Play Login UI

Compact Login UI

You can choose to use a compact form of the built-in login UI modal instead of the regular one.

Login UI Options
Login UI Options

No plug-and-play support for Firebase authentication.

The plug and play feature of the Arcana Auth product is not supported for Firebase. Developers must build a custom login UI and add code to onboard users. For details, see onboarding users via Firebase and custom login UI

Custom Login UI

You can onboard users through a custom login UI instead of the built-in plug-and-play one. See how to use custom login UI for onboarding users in a 'HTML/CSS/JS' app for details.

Arcana JWT Token

Upon successful authentication, Arcana Auth SDK returns a unique JWT token to the app called the Arcana JWT Token. App developers can use this token to verify user login and subsequently generate another token for app use. Learn more about how to verify the Arcana JWT Token for apps deployed on Testnet and Mainnet.

Sign Transactions

Use the standard JSON RPC Web3 wallet operations supported by the AuthProvider. See Web3 Wallet Operations for details.

Wallet Customization

Besides theme and branding, developers can manage the user experience for signing blockchain transactions by choosing the default, built-in Arcana wallet UI and tinkering with the wallet visibility or selecting a custom wallet UI.

4. Deploy

That's all!

Your 'HTML/CSS/JS' app is now powered by Arcana Auth SDK to onboard users and allow authenticated users to sign blockchain transactions using the Arcana wallet.

See Also

Arcana Auth SDK Quicklinks

Last update: April 12, 2024 by shaloo