Authenticate with External Wallets

External wallets — also called externally owned accounts (EOAs) — are wallets users bring to your app, such as MetaMask, Phantom, or Rainbow. They are different from embedded wallets, which Dynamic creates and manages for the user. When external wallet login is enabled, users can sign up or log in by connecting an existing wallet through the Dynamic auth UI. The SDK handles the wallet app handoff and returns the connected wallet.

Prerequisites

Dynamic Unity SDK initialized (see Installation Guide)
ClientPropsData configured with App Origin
A deep link scheme configured in your Unity Player Settings
Chains enabled in your Dynamic dashboard
Wallet login enabled under External Wallets in the dashboard

Dashboard configuration

Go to Chains & Networks in the Dynamic dashboard and enable the chains you want to support (e.g. EVM, Solana).
Go to Log in & User Profile in the Dynamic dashboard and toggle on Wallet Log in under External Wallets.
Go to Security → Whitelist Mobile Deeplink and add your app’s redirect URL (e.g. myapp://). This is required for the wallet app to return to your app after approval.

App Origin is required for external wallet connections. Set it in the ClientPropsData asset to the HTTPS origin that represents your app (for example, https://your-app.com).

SDK configuration

In the Unity Editor, create a ClientPropsData asset at Assets > Create > DynamicSDK > Client Props and configure it in the Inspector:

Field	Value
Environment ID	Your Dynamic environment ID
App Name	Your app’s display name
App Logo URL	URL to your app logo
App Origin	`https://your-app.com`

Initialize the SDK from a MonoBehaviour in Awake:

using DynamicSDK.Core;
using UnityEngine;

public class DynamicSDKManager : MonoBehaviour
{
    [SerializeField] private ClientPropsData props;

    private void Awake()
    {
        DynamicSDK.DynamicSDK.Init(props);
    }
}

Deep link setup

External wallet connections open the wallet app using deep links. The wallet app then redirects back to your app using the URL scheme you configured. Configure your app’s deep link scheme in the Unity Player Settings for iOS and Android. The scheme must match the redirect URL whitelisted in the Dynamic dashboard (for example, myapp://).

Show the auth UI

The simplest way to let users connect an external wallet is to show the Dynamic auth UI. The SDK presents available wallet options, opens the selected wallet app, and handles the redirect automatically.

DynamicSDK.Instance.UI.ShowAuth();

Listen for connected wallets

After a wallet is connected, it appears in the user’s wallet list. Subscribe to OnUserWalletsChanged and read UserWallets to react to new or updated wallets:

using DynamicSDK.Core;
using UnityEngine;
using System.Collections.Generic;

public class WalletListener : MonoBehaviour
{
    private void Start()
    {
        DynamicSDK.Instance.Wallets.OnUserWalletsChanged += OnWalletsChanged;

        // Check for any wallets already connected
        DisplayWallets(DynamicSDK.Instance.Wallets.UserWallets);
    }

    private void OnWalletsChanged(List<BaseWallet> wallets)
    {
        DisplayWallets(wallets);
    }

    private void DisplayWallets(List<BaseWallet> wallets)
    {
        foreach (var wallet in wallets)
        {
            Debug.Log($"Wallet: {wallet.Address} ({wallet.Chain})");
        }
    }
}

Filter connected wallets

You can separate EVM and Solana wallets by chain:

List<BaseWallet> wallets = DynamicSDK.Instance.Wallets.UserWallets;
List<BaseWallet> evmWallets = wallets.FindAll(w => w.Chain.ToUpper() == "EVM");
List<BaseWallet> solanaWallets = wallets.FindAll(w => w.Chain.ToUpper() == "SOL");

Set the primary wallet

If a user connects multiple wallets, you can set one as the primary wallet:

using DynamicSDK.Core;
using UnityEngine;

public class WalletManager : MonoBehaviour
{
    public async void SetPrimaryWallet(BaseWallet wallet)
    {
        try
        {
            await DynamicSDK.Instance.Wallets.SetPrimary(wallet.Id);
        }
        catch (System.Exception e)
        {
            Debug.LogError($"Failed to set primary wallet: {e.Message}");
        }
    }
}

Troubleshooting

Wallet app does not open: Verify your app’s URL scheme is configured in the Unity Player Settings and matches the redirect URL whitelisted in the dashboard.
Wallet does not appear after connection: Ensure you are subscribed to OnUserWalletsChanged and checking UserWallets.
Connection fails after redirect: Confirm App Origin is set in ClientPropsData and matches the origin registered in the dashboard.

Getting Started

Authentication

Wallets

Gasless

SDK Reference

Authenticate with External Wallets

Prerequisites

Dashboard configuration

SDK configuration

Deep link setup

Show the auth UI

Listen for connected wallets

Filter connected wallets

Set the primary wallet

Troubleshooting

Next steps

​Prerequisites

​Dashboard configuration

​SDK configuration

​Deep link setup

​Show the auth UI

​Listen for connected wallets

​Filter connected wallets

​Set the primary wallet

​Troubleshooting

​Next steps

Prerequisites

Dashboard configuration

SDK configuration

Deep link setup

Show the auth UI

Listen for connected wallets

Filter connected wallets

Set the primary wallet

Troubleshooting

Next steps