❴ 
    "data": ..., 
    "error": false,
    "error_message": null,
    "error_code": null
❵

curl -X GET "https://api.covalenthq.com/v1/{chain_id}/address/{address}/balances_v2/?key={YOUR API KEY}" -H "Accept: application/json"

const APIKEY = 'YOUR API KEY';
const baseURL = 'https://api.covalenthq.com/v1'
const blockchainChainId = '1'
const demoAddress = 'demo.eth'

async function getWalletBalance(chainId, address) {
    const url = new URL(`${baseURL}/${chainId}/address/${address}/balances_v2/?key=${APIKEY}`);
    const response = await fetch(url);
    const result = await response.json();
    const data = result.data;
    console.log(data)
    return data;
}

// Example address request
getWalletBalance(blockchainChainId, demoAddress);

import requests

API_KEY = 'YOUR API KEY'
base_url = 'https://api.covalenthq.com/v1'
blockchain_chain_id = '1'
demo_address = 'demo.eth'

def get_wallet_balance(chain_id, address):
    endpoint = f'/{chain_id}/address/{address}/balances_v2/?key={API_KEY}'
    url = base_url + endpoint
    result = requests.get(url).json()
    data = result["data"]
    print(data)
    return(data)


# Example address request
get_wallet_balance(blockchain_chain_id, demo_address)