Connect External Wallets

One of the most interesting capabilities of Web3Auth includes the ability to directly connect to external wallet providers like MetaMask, WalletConnect, Coinbase and more, enabling seamless onboarding of crypto native alongside the social login aspect for non crypto native users. This allows your application to be able to support all the required authentication flows with just a simple integration. These capabilities are enabled by our modular SDK, where each login provider is an adapter that can be plugged into the SDK.

note

Please note that these capabilities of connecting to multiple wallets is only available for the Web SDKs, currently these adapters are not available for Mobile and Gaming SDKs.

Integrate the wallet of your choice

Currently Web3Auth support the following wallets, please go to their respective SDK References to integrate them into your project:

• Torus EVM Wallet
• Torus Solana Wallet
• MetaMask
• Phantom Wallet
• WalletConnect V1
• Coinbase Wallet
• Slope Wallet
• Solflare Wallet

Understanding Adapters

Adapters are essentially connectors between Web3Auth and the underlying wallet provider. For example, an adapter for connecting with torus wallet is available under web3auth as @web3auth/torus-evm-adapter. Every adapter follows a common interface which is required by Web3Auth to communicate with the wallet.

An adapter emits certain events like CONNECTED, CONNECTING and DISCONNECTED etc during login lifecycle of a user. Each adapter exposes provider on successful user login which can be used to invoke RPC calls on wallet and on connected blockchain.

Hence, adapters are needed to connect your Web3Auth instance to a wallet provider. Web3Auth by default contains a pre-configured list of login adapters. It also provides flexibility to add/remove adapters or to use some existing adapter with custom configurations. To configure an adapter create an instance of the adapter by using its corresponding package and pass the returned adapter instance in the configureAdapter function.

For example, to configure openlogin adapter,

• Import the OpenloginAdapter from the @web3auth/openlogin-adapter package.
• Create an instance of the adapter along with the configuration
• Pass the returned instance to web3auth.configureAdapter as shown in the example below.

import { OpenloginAdapter } from "@web3auth/openlogin-adapter";

const openloginAdapter = await OpenloginAdapter({
  adapterSettings: {
    network: "sapphire_mainnet",
    uxMode: "popup",
  },
});

web3auth.configureAdapter(openloginAdapter);

Currently Available Wallet Adapters

By default Web3Auth's modal UI supports a set of default adapters depending on the authMode being used. By default, Web3Auth requires basic configuration client_id, and registering a redirect if you are using CustomAuth adapter from the dashboard.

The table below summarizes all the available adapters and their properties

Adapter	AuthMode	ChainNamespace	Default	Package Name
openlogin	WALLET, DAPP	EIP155,SOLANA	YES	@web3auth/openlogin-adapter
torus-evm	DAPP	EIP155	YES	@web3auth/torus-evm-adapter
torus-solana	DAPP	SOLANA	YES	@web3auth/torus-solana-adapter
metamask	DAPP	EIP155	YES	@web3auth/metamask-adapter
phantom	DAPP	SOLANA	YES	@web3auth/phantom-adapter
walletconnect-v1	DAPP	EIP155	YES	@web3auth/wallet-connect-v1-adapter
coinbase	DAPP	EIP155	YES	@web3auth/coinbase
slope	DAPP	SOLANA	YES	@web3auth/slope
solflare	DAPP	SOLANA	YES	@web3auth/solflare

Types of Wallet Adapters

Currently Web3Auth supports two categories of wallet adapters:

• IN_APP Application Wallets
• EXTERNAL External Wallets

Application Wallets

• Application wallets are those wallets which are scoped to dApp. This means that if you are logging in with the same application wallet on different applications, you will get different wallets (private keys).
• openlogin, torus-evm and torus-solana are Application Wallets.

External Wallets

• External wallet are those which are global for all applications. No matter where you are logging in, you will get same wallets if same credentials are being provided.
• metamask, phantom and walletconnect-v1, coinbase, slope, solflare are External Wallets in Web3Auth.

info

To know more about Adapter, checkout our SDK Reference, where we have specifically mentioned all the available adapters and their properties.