sponsorTransaction

sponsorTransaction(params: {
  transaction: VersionedTransaction | Transaction;
  userId?: string;
  traceContext?: TraceContext;
}): Promise<VersionedTransaction>

import { DynamicSvmWalletClient } from '@dynamic-labs-wallet/node-svm';
import { Connection, Transaction, SystemProgram, PublicKey } from '@solana/web3.js';

const svmClient = await authenticatedSvmClient();
const connection = new Connection(process.env.SOLANA_RPC_URL ?? 'https://api.mainnet-beta.solana.com');

const { blockhash } = await connection.getLatestBlockhash();

const transaction = new Transaction().add(
  SystemProgram.transfer({
    fromPubkey: new PublicKey(walletMetadata.accountAddress),
    toPubkey: new PublicKey(recipientAddress),
    lamports: 1000000,
  })
);
transaction.recentBlockhash = blockhash;
transaction.feePayer = new PublicKey(walletMetadata.accountAddress);

// Sponsor replaces the fee payer
const sponsoredTx = await svmClient.sponsorTransaction({ transaction });

// Inspect or modify the sponsored transaction, then sign
const signatureBase58 = await svmClient.signTransaction({
  walletMetadata,
  externalServerKeyShares,
  transaction: sponsoredTx,
});

const sponsoredTx = await svmClient.sponsorTransaction({ transaction, userId });

try {
  const sponsoredTx = await svmClient.sponsorTransaction({ transaction });
} catch (error) {
  if (error.message.includes('400')) {
    console.error('Gas sponsorship is not enabled for this environment');
  } else {
    console.error('Sponsorship failed:', error.message);
  }
}