1export async function createSellerLink(userId: string) {
2  const account = await stripe.accounts.create({
3    type: 'express',
4    metadata: { userId }
5  });
6
7  const accountLink = await stripe.accountLinks.create({
8    account: account.id,
9    refresh_url: `${BASE_URL}/connect/refresh`,
10    return_url: `${BASE_URL}/connect/return`,
11    type: 'account_onboarding',
12  });
13
14  return accountLink.url;
15}

1// api/webhooks/route.ts
2if (event.type === 'checkout.session.completed') {
3  const session = event.data.object;
4  const transferGroup = session.metadata.transfer_group;
5
6  await stripe.transfers.create({
7    amount: calculateSellerShare(session.amount_total),
8    currency: session.currency,
9    destination: session.metadata.seller_account_id,
10    transfer_group: transferGroup,
11  });
12}