Get balance of list accounts

Question

For getting balance I use connetion.getBalance(publicKey). Is exists way to get balance of keys list in one call, something like getBalances(publicKeys)?

Answer 1

You can use connection.getMultipleAccountsInfo([pubkey1, pubkey2, pubkey3, etc]) to load several accounts in a single RPC call, but you'll get AccountInfo instead of balance, so you need to parse the balance manually from the AccountInfo.

Once you have the accountInfo, you can get the bal with something like:

  let data: RawAccount = AccountLayout.decode(accountInfo.data);
  if (data == undefined || data.amount == undefined) {
    return 0;
  }
  let amount: BigInt = data.amount;
  return Number(amount);

Answer 2

You can loop through an array of public keys to get all balances.

Code snippet:

import { Connection, PublicKey, clusterApiUrl } from "@solana/web3.js";

const network = clusterApiUrl("devnet");

const getAllBalances = async () => {
  const publicKeys = [
    "43UyB1TMHeo4PUBodYcDXimcAsyU5gWgB6tChypeL2vC",
    "HZXnGd16Knjq2a8hLWCA2u4kXA3SQUfbwx3DPdAyCNEG",
  ];

  const connection = new Connection(clusterApiUrl("devnet"));
  
  let netBalance = 0;
  for (let index = 0; index < publicKeys.length; index++) {
    const pk = new PublicKey(publicKeys[index]);
    console.log(pk);
    const balance = await connection.getBalance(pk);
    netBalance += balance;
  }
  console.log(` netBalance = ${netBalance/LAMPORTS_PER_SOL}`);
};

If you need sum of all balances then you can use a variable to store the sum.