npm install xrpl

import { Client, Wallet, Payment } from 'xrpl';

const client = new Client('wss://xrplcluster.com');

// Build payment tx
const tx: Payment = {
  TransactionType: 'Payment',
  Account: wallet.address,
  Destination: 'rDestinationAddress...',
  Amount: '1000000', // drops (1 XRP = 1,000,000 drops)
  DestinationTag: 12345 // optional
};

// After user signs with Xaman, submit:
const txBlob = signedTransactionBlob; // from Xaman payload
const result = await client.submit(txBlob);

{
  TransactionType: 'Payment',
  Account: 'r...',
  Destination: 'r...',
  Amount: '1000000', // drops
  DestinationTag: 123
}

{
  TransactionType: 'NFTokenMint',
  Account: 'r...',
  NFTokenTaxon: 0,
  Issuer: 'r...',
  TransferFee: 5000, // 5% royalty
  Flags: 8, // burnable
  URI: 'ipfs://...'
}

{
  TransactionType: 'SetAccountRoot',
  Account: 'r...',
  EmailHash: 'abc123...',
  Domain: 'example.com'
}