Get all erc20 balance

Questions
1

Hello,

Whats the best way to get all the erc20 on my wallet?
I’m currently fetching all the coingecko erc20 one by one, but I get request timeout because I make too many requests per seconds, if I add a settimeout on each await contract.methods.balanceOf(account[0]).call() it works, but it takes too much time to complete… is it possible to check all my erc20 balance in one batch without having the problem to reach the calls limit?

Thanks

2

hi @damland,

Here’s one example: https://medium.com/@wbobeirne/get-all-eth-token-balances-for-multiple-addresses-in-a-single-node-call-4d0bcd1e5625

Depending on your use case you could also use the subscribe method rather than doing lots of http calls: https://medium.com/pixelpoint/track-blockchain-transactions-like-a-boss-with-web3-js-c149045ca9bf

I hope it helps !

Traian

3

Hi @traian.vila,

Thank you very much for that precious package.
I’ve written the following node.js:

const Web3 = require('web3');
const balanceChecker = require('eth-balance-checker/lib/web3');
const API_INFURA_RINKEBY = 'https://rinkeby.infura.io/v3/<my infura key>';

const web3 = new Web3(API_INFURA_RINKEBY);
const addresses = ['0x3dC71a2Ebc72876c373F1b82055b80f413489926'];
const tokens = ['0xFfB24C35993481FC632Fa61E89fC2ccC820a713E', '0x1CB3850DF43fD5ba59eB5Bc11d80b7Aa3Ce802d9', '0x6bF59B4CaA87F267C00583677E6b410618eE4aE2'];

balanceChecker.getAddressesBalances(web3, addresses, tokens).then(balances => {
  console.log(balances); // { "0x123...": { "0x0": "100", ... }, ... }
});

Then I get the following error:
(node:55383) UnhandledPromiseRejectionWarning: Error: Returned error: execution reverted
at Object.ErrorResponse (/Users//node_modules/web3-core-helpers/src/errors.js:29:16)
at /Users/nicobuechel/node_modules/web3-core-requestmanager/src/index.js:140:36

The demos given on medium seems to fail as well.

Do you have any idea?

4

It might be something wrong with that contract, check the contract call failed transaction on etherscan, you might see a more meaningful message about the failure.