The Greatest ERC20 Token Stability API for Dapp Improvement – Moralis Web3

A dependable ERC20 token steadiness API is a instrument each blockchain developer should make the most of. Are you on the lookout for such a instrument? Look no additional! With Moralis’ ERC20 token steadiness API endpoint, you will get a pockets’s native crypto steadiness utilizing a brief code snippet:

const response = await Moralis.EvmApi.steadiness.getNativeBalance(choices)

Additionally, with the next endpoint, you will get the token steadiness:

const response = await Moralis.EvmApi.token.getWalletTokenBalances(choices)

Should you’ve used Moralis earlier than, precisely methods to implement the above traces of code to take advantage of out of the very best token API. Nonetheless, if that is the primary time you’ve got heard in regards to the market’s main Web3 supplier, create your free Moralis account and observe our lead as we deal with right this moment’s tutorial.  


There are numerous alternatives at your disposal when you learn to profit from Moralis’ ERC20 token steadiness API, and right this moment’s article will enable you get began with confidence.

module showing ERC20 token balance after calling the api

Transferring ahead, we’ll first ensure you all know what an API for ERC20 tokens is. Subsequent, we’ll clarify how this instrument might be useful. Then, we’ll correctly introduce you to the very best ERC20 token steadiness API delivered to you by Moralis’ Token API. Final however not least, we’ll take you thru a easy instance venture the place you’ll have an opportunity to place one of many above Token API endpoints to make use of. Furthermore, by following our lead, you’ll additionally get to create a easy dapp.

erc20 standard ethereum code

ERC20 Token Stability API – What’s it?

An ERC20 token API is a selected Web3 API that revolves round on-chain knowledge concerning ERC20 tokens. You in all probability know that “software programming interfaces” (APIs) have been an essential a part of the legacy improvement area. In spite of everything, APIs have facilitated communication between completely different software program items by translating directions for correlative understanding. Additionally, APIs allow dependable programming in safe and managed improvement environments. Equally, Web3 APIs do the identical issues however for crypto. Accordingly, Web3 APIs facilitate communication between blockchain nodes and the backend of decentralized functions (dapps). Basically, Web3 APIs empower blockchain builders to construct dapps!

Moreover, most fungible tokens dwell on the Ethereum community, the place they observe the ERC20 commonplace. That is the place tokens get their identify from. It’s additionally price noting that ERC20 is brief for “Ethereum Request for Feedback 20”. This remark/proposal was offered and accepted on the finish of 2015. Since its implementation, all fungible tokens minted on Ethereum have the very same fundamental qualities that observe ether’s (Ethereum’s native token) instance. All ERC20 tokens are created with ERC20 good contracts. After minting, the token’s good contract handle shops all tokens. Nonetheless, as tokens are distributed, different blockchain addresses or Web3 wallets become involved. That’s the reason a correct ERC20 token steadiness API performs an essential function – it helps fetch these balances effortlessly.  

native ether currency

How Can an API for Displaying ERC20 Token Balances Be Helpful?

Similar to ERC20 tokens can serve many various functions, so can an API for displaying ERC20 token balances. Mainly, this form of API is the instrument to make use of whenever you need your dapp to show or make the most of ERC20 balances on the backend. If there are ERC20 tokens concerned, whether or not as utility tokens, governance tokens, or currencies, a dependable ERC20 token steadiness API makes your life loads less complicated. With this instrument, you may fetch on-chain particulars in regards to the fungible tokens and use the accessible knowledge to set off a selected performance. Moreover, amongst extra superior and complicated options, a token API allows you to show ERC20 balances on your dapp’s customers. 

So, everytime you resolve to construct a dapp on prime of Ethereum or different EVM-compatible chains, a dependable token API ought to be in your toolbox. With it, you may even construct DeFi platforms or incorporate ERC20 tokens in a Web3 sport with out breaking a sweat. Nonetheless, a high-quality API additionally allows you to save a ton of time and assets. In spite of everything, as a substitute of constructing your personal infrastructure, you merely use brief snippets of code like these offered within the intro. 

art cover showing the erc20 token balance api used inside a code editor

Introducing the Greatest ERC20 Token Stability API

At this level, you already know that the very best ERC20 token steadiness API is delivered to you by Moralis. Nonetheless, the Token API is only one of many merchandise that this enterprise-grade Web3 API supplier affords. Whenever you mix it with the Auth API, Streams API, and NFT API, you may create any type of dapp simply. Furthermore, Moralis is a Web2-Web3 bridge, enabling you to make use of your favourite legacy dev platforms, programming languages, and frameworks to affix the Web3 revolution. Moreover, you should utilize Moralis’ cross-platform interoperability to create multi-chain dapps. In spite of everything, Moralis helps all main programmable blockchains. Therefore, make sure that to discover the complete scope of Moralis’ energy.

moralis' cross-chain compatible chart showing supported networks

Nonetheless, let’s return to the Token API. It allows you to combine real-time token knowledge into your dapp in a simple approach. Plus, it helps you fetch extra than simply token balances but in addition token costs, possession, and switch knowledge throughout all supported blockchains. To make all this so simple as attainable, the Token API offers many endpoints, which you’ll discover contained in the token API documentation. Nonetheless, on this article, we’ll concentrate on the “getWalletTokenBalances” and “getNativeBalance” endpoints. In spite of everything, they’re the important thing gamers of the traces of code offered on the prime of this text.

The “getWalletTokenBalances” Endpoint

The “getWalletTokenBalances” endpoint is the important thing to effortlessly fetching wallets’ token balances and is a necessary a part of Moralis’ ERC20 token steadiness API. Thus, we should take a better take a look at the get steadiness by pockets documentation web page:

the get balance by wallet documentation page

As you may see above, this endpoint requires the “handle” parameter to let the perform know which handle to concentrate on. Furthermore, when fetching token balances with “getWalletTokenBalances“, you may embrace different elective parameters:

“chain” – The chain to question.“subdomain” – Use it when deciding on native dev/take a look at chains.“to_block” – It allows you to examine balances for previous blocks.“token_addresses” – This parameter allows you to filter the outcomes to a selected listing of addresses.

Moralis’ API reference documentation pages can help you take a look at the endpoints. So, when you take a look at the above screenshot once more, you may see that you simply simply want to stick in an handle you need to question. Then, choose the programming language you favor and hit the “Attempt It!” button. Nonetheless, you may merely copy the code snippet from the “request” part and paste it into your scripts. You then use the “getWalletTokenBalances” endpoint to fetch the steadiness of ERC20 tokens for a selected pockets handle on your dapps.

The “getNativeBalance” Endpoint

Should you paid consideration to the snippets of code supplied within the intro, you may need observed that the “getNativeBalance” endpoint is technically a part of the Stability API. Nonetheless, since that is the endpoint you need to use to get the native steadiness of an ERC20 token vault, it deserves our consideration. Plus, it’s the endpoint that we’ll use within the upcoming tutorial. That stated, make sure that to go to the “getNativeBalance” endpoint’s documentation web page: 

get balance by wallet endpoint doc page

Similar to “getWalletTokenBalances“, “getNativeBalance” additionally requires the “handle” parameter. As well as, it takes within the following three elective parameters:

“chain” – The chain to question.“providerUrl” – You need to use this parameter to find out the Web3 supplier URL when utilizing native dev chains.“to_block” – It allows you to examine balances for previous blocks. 

Use Moralis’ API to Get the Stability of ERC20 Tokens

At this level, greater than sufficient about the very best ERC20 token steadiness API to see it in motion. As such, we invite you to roll up your sleeves and full these three steps following our lead: 

Create a NodeJS Backend DappInitialize MoralisCreate a ReactJS Frontend Dapp

By finishing the above three steps, you’ll have your personal occasion of our “Get Pockets Native Stability” instance dapp:

homepage of our dapp showing two input fields and the title that states get wallet native balance

The above screenshot reveals the gist of what you’ll be constructing. Nonetheless, if you would like a extra detailed demo, make sure that to make use of the video on the backside of this text (0:15).

Create a NodeJS Backend Dapp – Step 1

If that is your first time making a NodeJS software, make sure that to finish the preliminary setup by following the “NodeJS” web page in Moralis’ docs. The latter will present you methods to correctly set up the required dependencies and arrange and run an Categorical server.

Upon getting your NodeJS software prepared and operating on an Categorical server, you may concentrate on creating an “index.js” script. There, you’ll use the very best ERC20 token steadiness API. Begin by defining the required constants on the prime of the file:

const specific = require(“specific”);
const Moralis = require(“moralis”).default;
const app = specific();
const cors = require(“cors”);
const port = 3000;

Additionally, ensure that your dapp makes use of “cors” and “specific”:


With the above traces of code in place, create the “get” endpoint to the “steadiness” route. With a easy “if-else” assertion, you make sure that the “getNativeBalance” endpoint accepts its parameters. Finally, it’s essential broaden your “index.js” file with these traces of code:

app.get(“/steadiness”, async (req, res) => {
strive {
const { question } = req;
let steadiness;

if (question.toBlock) {
steadiness = await Moralis.EvmApi.steadiness.getNativeBalance({
handle: question.handle,
chain: question.chain,
toBlock: question.toBlock
steadiness = await Moralis.EvmApi.steadiness.getNativeBalance({
handle: question.handle,
chain: question.chain,

const outcome = steadiness.uncooked;

return res.standing(200).json({ outcome });
} catch (e) {
console.log(“one thing went incorrect”);
return res.standing(400).json();

The above code will allow your NodeJS dapp to question the main points from the entry fields. This can function appropriately when you hyperlink it to your frontend, the place you’ll create the “Get Stability” button.

Initialize Moralis – Step 2

To initialize Moralis, it’s essential populate the above-created  “index.js” script with the next traces:

}).then(() => {
app.hear(port, () => {
console.log(`Listening for API Calls`);

As you may see, the “MORALIS_API_KEY” placeholder is within the code above. So, to entry the facility of Moralis’ ERC20 token steadiness API, it’s essential exchange it along with your precise Web3 API key. Upon getting your free Moralis account up and operating, you get to acquire your Web3 API key in two clicks out of your admin space:

web3 api page with a logged-in user's key

Be aware: The entire “index.js” script awaits you on GitHub. 

Create a ReactJS Frontend Dapp – Step 3

You in all probability have expertise creating ReactJS functions and could be greater than able to creating the above-demonstrated frontend your self. Nonetheless, it can save you a while by utilizing our GitHub repo. Nonetheless, let’s take a look at the core perform of our dapp’s frontend – coded contained in the “App.js” script. Listed below are the main points of the “fetchBalance” perform, which is triggered by the “Get Stability” button: 

async perform fetchBalance() {

let res;

res = await axios.get(`http://localhost:3000/steadiness`, {
params: { handle: handle, chain: chain, toBlock: toBlock },
res = await axios.get(`http://localhost:3000/steadiness`, {
params: { handle: handle, chain: chain },


setBalance((res.knowledge.outcome.steadiness / 1E18).toFixed(2))

The traces of code above present you that our dapp offers our backend with the required and elective parameters. Furthermore, it takes the uncooked steadiness, which incorporates eighteen decimals, and rounds it to 2 decimal locations.

In case you need extra detailed steerage, use the video under. Except for the demonstration of the “Get Pockets Native Stability” dapp, it additionally walks you thru different core scripts:

3:54 – Particulars of the Core Backend Script (“index.js”)5:24 – The “App.js” Script 

With this instance dapp in place, we encourage you to strive utilizing completely different pockets addresses and chains. Additionally, be happy to discover previous balances by utilizing completely different block numbers. As well as, you might also be prepared to make use of the above-presented scripts for “getWalletTokenBalances“. To do that, you’ll want to switch “steadiness.getNativeBalance” with “token.getWalletTokenBalances“.

Lastly, right here’s the video tutorial with all the main points:       

The Greatest ERC20 Token Stability API for Dapp Improvement – Abstract

In right this moment’s article, you realized what the very best ERC20 token steadiness API for dapp improvement is and methods to use it. As such, you now know that this glorious instrument comes from Moralis’ Token API and Stability API. You additionally had an opportunity to observe our steps and full an instance dapp that fetches native token balances. With some minor tweaks to the code, this similar dapp can be utilized to fetch ERC20 token balances. Furthermore, when you took on right this moment’s tutorial, you realized methods to receive your Web3 API key. Therefore, you at the moment are outfitted to make the most of Moralis’ different Web3 APIs.

We consider in studying by taking motion. Thus, we advocate you concentrate on finishing as many tutorials as attainable that await you within the Moralis docs. As well as, make sure that to proceed your free blockchain improvement schooling by exploring the Moralis YouTube channel and our crypto weblog. These two shops cowl a variety of helpful subjects. As an example, a number of the newest articles concentrate on Web3 AWS Lambda, Python Web3 improvement, NFT metadata, blockchain infrastructure, and way more. Nonetheless, you too can grow to be blockchain licensed by finishing programs provided by Moralis Academy. To even higher perceive programmable chains, you can begin with Ethereum fundamentals.

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