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Use an external wallet signer to connect an existing blockchain wallet or keypair — such as MetaMask, Phantom, or a raw keypair — as an operational signer on a Crossmint smart wallet. This signer type is designed for crypto-native users who already have a wallet and want to use it to control a Crossmint smart wallet. For a conceptual overview, see External wallet in the Wallet Signers guide. To learn how to register additional operational signers on an existing wallet, see Registering a signer.

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Configuration

import { useWallet } from '@crossmint/client-sdk-react-ui';

const { getOrCreateWallet } = useWallet();

const wallet = await getOrCreateWallet({
    chain: "solana",
    signer: {
        type: "external-wallet",
        address: "WUyB2nCgAFhcf9vJ34s7vUK4KJc77bgoeM3swMcwfWn",
    },
});