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If you’re into cryptocurrency, you might want to use Chainbase API Get ERC20 token balances to build a simple wallet to check the balances! This API returns all ERC20 token balances that an address owns. You can also use this API to automate the process of checking your token balances, and save yourself a lot of time and effort.

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Overview - Tools you need to work with Chainbase

  1. A free account at Chainbase with an API key.
  2. An IDE. Our examples are shown in JavaScript, you can use VS Code as your IDE for example.
  3. A known wallet address as your input.

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Step 1: Set up a free account at Chainbase

To better leverage the ability that Chainbase provides, you can register here for a free account and access to different APIs and data cloud. After logging into Chainbase, visit the dashboard to get an overview. Create a new project in the console and get an API key.

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Step 2: Write script using Chainbase API

  1. Using fetch in JavaScript.
network_id = '1'; // See https://docs.chainbase.com/reference/supported-chains to get the id of different chains.
wallet_addr = '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045'; // Take Vitalik's wallet address as an example.

fetch(`https://api.chainbase.online/v1/account/tokens?chain_id=${network_id}&address=${wallet_addr}&limit=5&page=1`, {
    method: 'GET',
    headers: {
        'x-api-key': CHAINBASE_API_KEY, // Replace the field with your API key.
        'accept': 'application/json'
    }
}).then(response => response.json())
    .then(data => console.log(data.data))
    .catch(error => console.error(error));
  1. Using axios in JavaScript. You need to install axios using npm install axios --save in the terminal first.
network_id = '1'; // See https://docs.chainbase.com/reference/supported-chains to get the id of different chains.
wallet_addr = '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045'; // Take Vitalik's wallet address as an example.

const axios = require('axios');
const options = {
    url: `https://api.chainbase.online/v1/account/tokens?chain_id=${network_id}&address=${wallet_addr}&limit=5&page=1`,
    method: 'GET',
    headers: {
        'x-api-key': CHAINBASE_API_KEY, // Replace the field with your API key.
        'accept': 'application/json'
    }
};
axios(options)
    .then(response => console.log(response.data.data))
    .catch(error => console.log(error));

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Step 3: Print the ERC20 token balances

Chainbase API Get ERC20 token balances takes the chain id and wallet address as parameters, and returns all ERC20 token balances that this wallet owns. You can also specify a certain token by feeding an address in the contract_address field. To get data printed, run command node <filename>.js in the terminal. In this case, the balances of some ERC20 tokens owned by Vitalik on Ethereum are as follows. 
{
  "balance": "0x2386f26fc10000",
  "contract_address": "0x954b7997b8bfa9b3d642c477549e284551012f05",
  "decimals": 9,
  "name": "Eterium",
  "symbol": "ETE"
},
{
  "balance": "0x97e328b058fe88019f7b",
  "contract_address": "0xff58ece2d4584139e3f136e18cae27deda947d3b",
  "decimals": 18,
  "name": "Uniswap V2",
  "symbol": "UNI-V2"
},
{
  "balance": "0x186a0",
  "contract_address": "0xa6de609807c7258a0d34f5307c1808f062a59794",
  "decimals": 0,
  "name": "$ USDCDrop.com",
  "symbol": "$ USDCDrop.com <- Visit to claim"
},
{
  "balance": "0x36f4bc072a511af5",
  "contract_address": "0x92d6c1e31e14520e676a687f0a93788b716beff5",
  "decimals": 18,
  "name": "dYdX",
  "symbol": "DYDX"
},
{
  "balance": "0x4700c3e20f38dcc",
  "contract_address": "0xa0a85f43c5e286187266833a5e986cb8a1a8b9f9",
  "decimals": 9,
  "name": "Apollo 11",
  "symbol": "APOLLO"
}

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API Reference

If you want to know more details on the endpoint and optional parameters, check out:

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Support

If you meet any trouble following the tutorial, feel free to reach out to us in our Discord to get 24/7 community support.