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STON.fi Simple TON -> USDT Swap

I'm trying to do a simple TON -> USDT swap on STON.fi. It seems to be more difficult than anticipated. See below for function. Any advise will be appreciated. The transaction goes through but I don't receive the tokens.

async function stonfi(mnemonic) {

	const keyPair = await mnemonicToWalletKey(mnemonic.split(' '));
	const tonweb = new TonWeb(new TonWeb.HttpProvider('https://toncenter.com/api/v2/jsonRPC', { apiKey: 'e4cf6......' }));

	const WalletClass = tonweb.wallet.all.v4R2;

	const wallet = new WalletClass(tonweb.provider, {
		publicKey: keyPair.publicKey,

	const address = await wallet.getAddress();

	const JETTON0 = 'EQBynBO23ywHy_CgarY9NK9FTz0yDsG82PtcbSTQgGoXwiuA'; //USDT;
	const PROXY_TON = 'EQCM3B12QK1e4yZSf8GtBRT0aLMNyEsBc_DhVfRRtOEffLez';

	const router = new Router(tonweb.provider, {
		revision: ROUTER_REVISION.V1,

	const tonToJettonTxParams = await router.buildSwapProxyTonTxParams({
		// address of the wallet that holds TON you want to swap
		userWalletAddress: address,
		proxyTonAddress: PROXY_TON,
		// amount of the TON you want to swap
		offerAmount: new TonWeb.utils.BN('1000000'),
		// address of the jetton you want to receive
		askJettonAddress: JETTON0,
		// minimal amount of the jetton you want to receive as a result of the swap.
		// If the amount of the jetton you want to receive is less than minAskAmount
		// the transaction will bounce
		minAskAmount: new TonWeb.utils.BN(1),
		// query id to identify your transaction in the blockchain (optional)
		queryId: 12345,
		// address of the wallet to receive the referral fee (optional)
		referralAddress: undefined,

	const seqno = (await wallet.methods.seqno().call()) || 0;

	var result = await wallet.methods
			secretKey: keyPair.secretKey,
			amount: '1000000',
			seqno: seqno,
			payload: tonToJettonTxParams.payload
Posted 6 months ago
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