$
touch alchemy-sdk-script.js

1
import { Alchemy, Network } from "alchemy-sdk";
2
3
const settings = {
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  apiKey: "demo", // Replace with your Alchemy API Key.
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  network: Network.ETH_MAINNET, // Replace with your network.
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};
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const alchemy = new Alchemy(settings);
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// The wallet address / token we want to query for:
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const ownerAddr = "0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be";
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const balances = await alchemy.core.getTokenBalances(ownerAddr, [
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  "0x607f4c5bb672230e8672085532f7e901544a7375",
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]);
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// The token address we want to query for metadata:
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const metadata = await alchemy.core.getTokenMetadata(
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  "0x607f4c5bb672230e8672085532f7e901544a7375"
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);
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console.log("Token Balances:");
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console.log(balances);
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console.log("Token Metadata: ");
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console.log(metadata);

$
node alchemy-sdk-script.js

$
Token Balances:
>
{
>
  address: '0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be',
>
  tokenBalances: [
>
    {
>
      contractAddress: '0x607f4c5bb672230e8672085532f7e901544a7375',
>
      tokenBalance: '0x0000000000000000000000000000000000000000000000000000000000000000',
>
      error: null
>
    }
>
  ]
>
}
>
Token Metadata:
>
{
>
  decimals: 9,
>
  logo: 'https://static.alchemyapi.com/images/assets/1637.png',
>
  name: 'iExec RLC',
>
  symbol: 'RLC'
>
}

$
touch fetch-script.js

1
// alchemy-token-api/fetch-script.js
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import fetch from 'node-fetch';
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// Replace with your Alchemy API key:
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const apiKey = "demo";
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const fetchURL = `https://eth-mainnet.g.alchemy.com/v2/${apiKey}`;
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// Replace with the wallet address you want to query:
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const ownerAddr = "0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be";
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// Replace with the token contract address you want to query:
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const tokenAddr = "0x607f4c5bb672230e8672085532f7e901544a7375";
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var raw = JSON.stringify({
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  "jsonrpc": "2.0",
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  "method": "alchemy_getTokenBalances",
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  "headers": {
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    "Content-Type": "application/json"
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  },
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  "params": [
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    `${ownerAddr}`,
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    [
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      `${tokenAddr}`,
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    ]
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  ],
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  "id": 42
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});
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var requestOptions = {
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  method: 'POST',
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  body: raw,
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  redirect: 'follow'
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};
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// Make the request and print the formatted response:
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fetch(fetchURL, requestOptions)
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  .then(response => response.json())
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  .then(response => JSON.stringify(response, null, 2))
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  .then(result => console.log(result))
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  .catch(error => console.log('error', error));

$
node fetch-script.js

1
{
2
  "jsonrpc": "2.0",
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  "id": 42,
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  "result": {
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    "address": "0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be",
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    "tokenBalances": [
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      {
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        "contractAddress": "0x607f4c5bb672230e8672085532f7e901544a7375",
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        "tokenBalance": "0x00000000000000000000000000000000000000000000000000003c005f81ab00",
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        "error": null
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      }
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    ]
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  }
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}