To determine if a user has StarKey installed, a web application should check for the presence of a starkey object. StarKey's browser extension automatically inject this object into the window of any web application that meets the following conditions: the site uses https://, is running on localhost, or is on 127.0.0.1. Note that StarKey does not inject the provider into iframes or sites using http://.

If the starkey object is present, Supra dApps can interact with StarKey through the API available at window.starkey. However, this Supra provider may experience namespace collisions with other injected wallets.

To confirm StarKey's installation, the application should also verify the presence of an isStarkey flag.

const isStarkeyInstalled = window?.starkey;

If StarKey is not installed, we suggest redirecting your users to our website. The implementation might look something like this:

The Starkey browser extension is designed to interact with web applications.

The most direct way to interact with StarKey is via the provider that StarKey injects into your web application. This provider is globally available at window.starkey and its methods will always include StarKey's most up-to-date functionality. This documentation is dedicated to covering all aspects of the provider.

Once a web application is connected to StarKey, it can prompt the user for permission to send transactions on their behalf.

To send a transaction, you will need to have a valid transaction object. It should look a little like this:

// Example transaction object
 const transaction = {
      data: "", // optional
      from: from_address,
      to: to_address,
      value: amount,
    };

However, this transaction object needs to be signed using the sender's private key. This ensures that only the person holding the private key can send transactions from the public address.

To prompt StarKey to send a transaction to the network, use the following code snippet:

const provider = getProvider();
 const transaction = {
      data: "",
      from: from_address,
      to: to_address,
      value: amount,
    };
 
const txHash = await provider.sendTransaction(transaction);
console.log("txHash :: ", txHash);

What is Banxa?

Banxa is a trusted fiat-to-crypto payment gateway that lets users buy digital assets using traditional payment methods like credit cards, debit cards, Apple Pay, and more. It supports identity verification and fraud prevention while offering global coverage and compliance.

Why This Integration Matters

Buying $SUPRA is now easier than ever, with no centralized exchange, no external onboarding process, and no delays.

With Banxa now integrated directly into StarKey Wallet, users can:

• Purchase $SUPRA using debit/credit cards

• Skip the exchange sign-up process entirely

• Enjoy a seamless, in-wallet experience

• Access the service from over 150+ countries, including the United States

How It Works Inside StarKey

1. Download & open StarKey Wallet

2. Create your account

3. Navigate to the Buy tab

4. Enter the amount of $SUPRA you want to purchase

After detecting the provider, an application can request to connect to Starkey. This connection request will prompt the user to grant permission to share their public key, signaling their willingness to engage further. Users must approve the connection request before the app can proceed with additional actions, such as signing a message or sending a transaction.

Once permission is granted for the first time, the web application's domain will be whitelisted for future connection requests. After a connection is established, either the application or the user can choose to terminate the connection.

Connecting

To connect to Starkey by default, you can call the window.starkey function.