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Wallet Lifecycle

After login(), the SDK fully automates wallet setup in the background: 
login() called
  → Session key generated
  → Wallet address derived (Poseidon(sub, salt))
  → Account deployed on-chain (gasless, if not already deployed)
  → Session key registered on-chain
  → walletStatus.isReady = true ✅
You never need to manually deploy or register — just observe walletStatus: 
const { login, walletStatus, address } = useCavos();

if (!address) {
  return <button onClick={() => login('google')}>Login</button>;
}

if (!walletStatus.isReady) {
  return (
    <div>
      {walletStatus.isDeploying && <p>Deploying wallet...</p>}
      {walletStatus.isRegistering && <p>Activating session...</p>}
    </div>
  );
}

return <App />;

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Wallet Status

interface WalletStatus {
  isDeploying: boolean;           // Account contract is being deployed on-chain
  isDeployed: boolean;            // Account contract exists on-chain
  isRegistering: boolean;         // Session key is being registered on-chain
  isSessionActive: boolean;       // Session key is registered and not expired
  isReady: boolean;               // Fully ready — deployed + session active
  pendingDeployTxHash?: string;   // Set when deploy tx was submitted but confirmation timed out
}

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Pending Deploy Recovery

If the deploy transaction times out (e.g., network congestion), the SDK persists the tx hash in localStorage. On the next init() call (page load), it re-polls the hash automatically. You can surface a link to the user in the meantime: 
const { walletStatus } = useCavos();

{walletStatus.pendingDeployTxHash && (
  <a
    href={`https://sepolia.starkscan.co/tx/${walletStatus.pendingDeployTxHash}`}
    target="_blank"
  >
    Deployment pending — view on explorer
  </a>
)}

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Wallet Address

The wallet address is deterministic — derived from the user’s OAuth identity and a per-app salt. The same user + same app always produces the same address. 
const { address } = useCavos();

// or directly from the SDK
const address = cavos.getAddress();
Use it as the funding address (send tokens to this address to fund the wallet): 
<p>Fund your wallet: {address}</p>

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Check Deployment

const { isAccountDeployed } = useCavos();

const deployed = await isAccountDeployed();
Or use walletStatus.isDeployed which is kept in sync automatically: 
const { walletStatus } = useCavos();

console.log('Deployed:', walletStatus.isDeployed);

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Manual Deployment

In most cases deployment is automatic. If you ever need to trigger it manually: 
const { deployAccount } = useCavos();

const txHash = await deployAccount();
console.log('Deploy tx:', txHash);

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Balance

Get the ETH balance of the wallet (in wei, as a string): 
const { getBalance } = useCavos();

const balance = await getBalance();
const eth = (BigInt(balance) / 10n**18n).toString();

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Multi-Wallet (Named Sub-Accounts)

A single user can have multiple wallets per app, differentiated by name. Each named wallet has its own deterministic address derived from Poseidon(sub, salt, walletName).

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Discover Wallets

Returns all wallets the user has used in this app: 
const { getAssociatedWallets } = useCavos();

const wallets = await getAssociatedWallets();
// [
//   { address: '0x...', name: undefined },      // default wallet
//   { address: '0x...', name: 'trading' },
//   { address: '0x...', name: 'savings' },
// ]

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Switch Wallet

const { switchWallet, address } = useCavos();

// Switch to a named sub-wallet
await switchWallet('trading');
console.log('Now using:', address); // new address

// Switch back to default
await switchWallet();
After switching, walletStatus resets and the deployment/session flow runs for the new wallet.

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Session Export

Export the active session as a base64 token for use in the CLI or autonomous agents. The token encodes the session private key, wallet address, and policy — it does not include the JWT. 
const { exportSession, walletStatus, sessionPublicKey } = useCavos();

// Only export when session is active and registered on-chain
if (walletStatus.isSessionActive) {
  const token = exportSession();
  navigator.clipboard.writeText(token);
}
CLI Usage: 
export CAVOS_TOKEN="<base64_token>"

cavos balance
cavos transfer --to 0x... --amount 1.5 --token STRK --wait
[!WARNING] The exported token contains the session private key. Treat it like a password — never commit it to source control or share it publicly.

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Logout

Clears the local session and wallet state. The on-chain account remains intact and can be restored by logging in with the same identity. 
const { logout } = useCavos();

await logout();
// isAuthenticated → false, address → null

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Subscribing to Status Changes

For custom UI outside of React context, subscribe directly to the SDK: 
const { cavos } = useCavos();

// Subscribe to wallet status
const unsubscribe = cavos.onWalletStatusChange((status) => {
  console.log('Wallet status changed:', status);
});

// Subscribe to auth state changes (e.g., magic link completing)
const unsubscribeAuth = cavos.onAuthChange(() => {
  console.log('Auth state changed');
});

// Cleanup
return () => {
  unsubscribe();
  unsubscribeAuth();
};