To sponsor gas fees for transactions on Solana, see our guide here.
Use the signTransaction method exported from the useSignTransaction hook to sign a transaction with a Solana wallet.
signTransaction: (input: {
  transaction: SupportedSolanaTransaction;
  connection: Connection;
  uiOptions?: SendTransactionModalUIOptions;
  transactionOptions?: SendTransactionOptions;
  address?: string;
}) => Promise<SupportedSolanaTransaction>;

​
Usage

import {useSignTransaction, useSolanaWallets} from '@privy-io/react-auth/solana';
import {Connection, Transaction, VersionedTransaction} from '@solana/web3.js';

// Inside your component
const {signTransaction} = useSignTransaction();
const {wallets} = useSolanaWallets();

// Configure your connection to point to the correct Solana network
const connection = new Connection('https://api.mainnet-beta.solana.com');

// Create your transaction (either legacy Transaction or VersionedTransaction)
const transaction = new Transaction(); // or new VersionedTransaction()
// Add your instructions to the transaction...

// Sign the transaction
const signedTransaction = await signTransaction({
  transaction: transaction,
  connection: connection,
  address: wallets[0].address // Optional: Specify the wallet to use for signing. If not provided, the first wallet will be used.
});

console.log('Transaction signed successfully');

​
Parameters

​
transaction
SupportedSolanaTransaction
required
The transaction to be signed. Can be either a legacy Transaction or VersionedTransaction from @solana/web3.js.
​
connection
Connection
required
Connection to an SVM (Solana) network.
​
uiOptions
SendTransactionModalUIOptions
UI options to customize the transaction request modal.
To hide confirmation modals, set options.uiOptions.showWalletUIs to false. Learn more about configuring modal prompts here.
​
transactionOptions
SendTransactionOptions
Transaction options to customize the transaction request.
​
address
string
Address of the wallet to use for signing the transaction. Recommended when working with external wallets to ensure reliable functionality. If not provided, the first wallet will be used.

​
Response

​
signedTransaction
SupportedSolanaTransaction
The signed transaction that can be sent to the network.

​
Sign all transactions

Use the signAllTransactions method on a Solana wallet to sign all transactions in a batch.
signAllTransactions: (transactions: (Transaction | VersionedTransaction)[]) =>
  Promise<(Transaction | VersionedTransaction)[]>;
This signAllTransactions method is only available with whitelabel UIs

​
Usage

import {
  clusterApiUrl,
  Connection,
  PublicKey,
  getVersionedTransaction,
  getLegacyTransaction
} from '@solana/web3.js';
import {useSolanaWallets} from '@privy-io/react-auth/solana';

const {wallets} = useSolanaWallets();
const wallet = wallets[0];

const connection = new Connection(clusterApiUrl('devnet'));
const walletPublicKey = new PublicKey(wallet.address);

const tx1 = await getVersionedTransaction({
  connection,
  from: walletPublicKey
});
const tx2 = await getLegacyTransaction({
  connection,
  from: walletPublicKey
});

const signedTxs = await wallet.signAllTransactions([tx1, tx2]);

​
Parameters

​
transactions
(Transaction | VersionedTransaction)[]
required
The transactions to sign.

​
Returns

​
signedTransactions
(Transaction | VersionedTransaction)[]
The array of signed transactions.