Getting Started with Web3Auth Vue SDK

Overview

Web3Auth Plug and Play (PnP) provides a seamless authentication experience for Vue applications with social logins, external wallets, and more. Using our Vue Composables, you can easily connect users to their preferred wallets and manage authentication state.

Requirements

• This is a frontend SDK and must be used in a browser environment.
• Basic knowledge of JavaScript and Vue.

Installation

Install the Web3Auth Modal SDK using npm or yarn:

npm

npm install --save @web3auth/modal

Yarn

yarn add @web3auth/modal

pnpm

pnpm add @web3auth/modal

Setup

info

Prerequisites Before you start, make sure you have registered on the Web3Auth Dashboard and have set up your project. You can look into the Dashboard Setup guide to learn more.

1. Configuration

Create a configuration file for Web3Auth. This file will contain your Web3Auth Client ID and Network details from the Web3Auth Dashboard.

web3authContext.ts

import { type Web3AuthContextConfig } from "@web3auth/modal/vue";
import { WEB3AUTH_NETWORK, type Web3AuthOptions } from "@web3auth/modal";

const web3AuthOptions: Web3AuthOptions = {
  clientId: "YOUR_CLIENT_ID", // Get your Client ID from Web3Auth Dashboard
  web3AuthNetwork: WEB3AUTH_NETWORK.SAPPHIRE_MAINNET, // or WEB3AUTH_NETWORK.SAPPHIRE_DEVNET
};

const web3AuthContextConfig: Web3AuthContextConfig = {
  web3AuthOptions,
};

export default web3AuthContextConfig;

2. Setup Web3Auth Provider

In your main component (e.g. App.vue), import the Web3AuthProvider component and wrap your application with it:

App.vue

<script setup lang="ts">
  import Home from "./Home.vue";
  import { Web3AuthProvider } from "@web3auth/modal/vue";
  import web3AuthContextConfig from "./web3authContext";
</script>

<template>
  <div class="min-h-screen flex flex-col">
    <Web3AuthProvider :config="web3AuthContextConfig">
      <Home />
    </Web3AuthProvider>
  </div>
</template>

Advanced Configuration

The Web3Auth Modal SDK offers a rich set of advanced configuration options:

• Smart Accounts: Configure account abstraction parameters.
• Custom Authentication: Define authentication methods.
• Whitelabeling & UI Customization: Personalize the modal's appearance.
• Multi-Factor Authentication (MFA): Set up and manage MFA.
• Wallet Services: Integrate additional wallet services.

tip

Head over to the Advanced Configuration section to learn more about each configuration option.

Blockchain Integration

Web3Auth is blockchain agnostic, enabling integration with any blockchain network. Out of the box, Web3Auth offers robust support for both Solana and Ethereum, each with dedicated Vue composables.

Solana Integration

Solana composables are included natively within the @web3auth/modal package. No additional setup is required—simply use the provided composables to interact with Solana networks.

For detailed usage and examples, visit the Solana Composables section.

Ethereum Integration

Ethereum composables are provided through the popular wagmi library, which works seamlessly with Web3Auth. This allows you to leverage a wide range of Ethereum composables for account management, transactions, and more.

For implementation details and examples, refer to the Ethereum Composables section.

Basic Configuration

import { type Web3AuthContextConfig } from "@web3auth/modal/vue";
import { WEB3AUTH_NETWORK, type Web3AuthOptions } from "@web3auth/modal";

const web3AuthOptions: Web3AuthOptions = {
  clientId: "YOUR_CLIENT_ID",
  web3AuthNetwork: WEB3AUTH_NETWORK.SAPPHIRE_MAINNET, // or WEB3AUTH_NETWORK.SAPPHIRE_DEVNET
};

const web3AuthContextConfig: Web3AuthContextConfig = {
  web3AuthOptions,
};

Advanced Configuration

import { type Web3AuthContextConfig } from "@web3auth/modal/vue";
import {
  WALLET_CONNECTORS,
  WEB3AUTH_NETWORK,
  MFA_LEVELS,
  type Web3AuthOptions,
} from "@web3auth/modal";

const web3AuthOptions: Web3AuthOptions = {
  clientId: "YOUR_CLIENT_ID",
  web3AuthNetwork: WEB3AUTH_NETWORK.SAPPHIRE_MAINNET,
  modalConfig: {
    connectors: {
      [WALLET_CONNECTORS.AUTH]: {
        label: "auth",
        loginMethods: {
          google: {
            name: "google login",
            // logoDark: "url to your custom logo which will shown in dark mode",
          },
          facebook: {
            name: "facebook login",
            showOnModal: false, // hides the facebook option
          },
          email_passwordless: {
            name: "email passwordless login",
            showOnModal: true,
            authConnectionId: "w3a-email_passwordless-demo",
          },
          sms_passwordless: {
            name: "sms passwordless login",
            showOnModal: true,
            authConnectionId: "w3a-sms_passwordless-demo",
          },
        },
        showOnModal: true, // set to false to hide all social login methods
      },
    },
    hideWalletDiscovery: true, // set to true to hide external wallets discovery
  },
  mfaLevel: MFA_LEVELS.MANDATORY,
};

const web3AuthContextConfig: Web3AuthContextConfig = {
  web3AuthOptions,
};

Troubleshooting

Bundler Issues: Missing Dependencies

You might encounter errors related to missing dependencies in the browser environment:

• Buffer is not defined
• process is not defined
• Other Node.js-specific modules missing errors

These Node.js dependencies need to be polyfilled in your application. We've prepared detailed troubleshooting guides for popular bundlers:

• Vite Troubleshooting Guide
• Svelte Troubleshooting Guide
• Nuxt Troubleshooting Guide
• Webpack 5 Troubleshooting Guide

JWT Errors

When using Custom Authentication, you may encounter JWT errors:

• Invalid JWT Verifiers ID field
• Failed to verify JWS signature
• Duplicate Token
• Expired Token
• Mismatch JWT Validation field

Different Private Keys Across Integrations

If you're getting different private keys across integrations, see our guide on Different Private Keys across integrations.

Quick Starts

React Quick Start

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Angular Quick Start

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Vue Quick Start

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Vue Solana Quick Start

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NextJS Quick Start

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A quick integration of Web3Auth SDK in NextJS

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Vanilla JS Quick Start

QUICK START

A quick integration of Web3Auth SDK in Vanilla JavaScript

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