MsgMultiSend

import {
  LCDClient,
  MnemonicKey,
  MsgMultiSend,
  StdTx,
  Account,
} from '@terra-money/feather.js';
const {
  TESTNET_LCD_URL = 'http://localhost:1317',
  TESTNET_CHAIN_ID = 'localterra',
} = process.env;
async function main() {
const lcd = new LCDClient({
  'pisco-1': {  // key must be the chainID
    lcd: 'https://pisco-lcd.terra.dev',
    chainID: 'pisco-1',
    gasAdjustment: 1.75,
    gasPrices: { uluna: 0.015 },
    prefix: 'terra',  // bech32 prefix, used by the LCD to understand which is the right chain to query
  },
});
  const keys = {
    test1: new MnemonicKey({
      mnemonic:
        'notice oak worry limit wrap speak medal online prefer cluster roof addict wrist behave treat actual wasp year salad speed social layer crew genius',
    }),
    test2: new MnemonicKey({
      mnemonic:
        'quality vacuum heart guard buzz spike sight swarm shove special gym robust assume sudden deposit grid alcohol choice devote leader tilt noodle tide penalty',
    }),
    test3: new MnemonicKey({
      mnemonic:
        'symbol force gallery make bulk round subway violin worry mixture penalty kingdom boring survey tool fringe patrol sausage hard admit remember broken alien absorb',
    }),
  };
  const wallet = lcd.wallet(keys.test1);
  const output = new MsgMultiSend.Output(
    'terra199vw7724lzkwz6lf2hsx04lrxfkz09tg8dlp6r',
    '1000000uluna'
  );
  const tx = await wallet.createTx({
    msgs: [
      new MsgMultiSend(
        [
          new MsgMultiSend.Input(keys.test1.accAddress('terra'), '1000000uluna'),
          new MsgMultiSend.Input(keys.test2.accAddress('terra'), '1000000uluna'),
          new MsgMultiSend.Input(keys.test3.accAddress('terra'), '1000000uluna'),
        ],
        [output, output, output]
      ),
    ],
    chainID: 'pisco-1',
  });
  const signatures = await Promise.all(
    ['test1', 'test2', 'test3'].map(async (keyName) => {
      const key = keys[keyName] as MnemonicKey;
      const acc = (await lcd.auth.accountInfo(key.accAddress('terra'))) as Account;
      tx.account_number = acc.account_number;
      tx.sequence = acc.sequence;
      return key.createSignature(tx);
    })
  );
  const stdTx = new StdTx(tx.msgs, tx.fee, signatures, tx.memo, chainId);
  await lcd.tx
    .broadcastSync(stdTx, 'pisco-1')
    .then((result) => {
      console.log(result);
    })
    .catch((err) => {
      console.error(err.message);
    });
}
main().catch(console.error);