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

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

// 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
});

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 for the embedded wallet signing the transaction. Defaults to the user’s embedded wallet at HD index 0.

​
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.