Build on OP Mainnet – Full 2024 Guide

In in the present day’s article, we’ll present you the way to construct decentralized purposes (dapps) on OP Mainnet utilizing Moralis’ industry-leading Web3 APIs. With our premier APIs, you possibly can seamlessly fetch and combine on-chain knowledge into your initiatives with solely single API calls. Consequently, when leveraging Moralis, you can begin constructing OP Mainnet initiatives quicker and extra effectively! 

In case you’re wanting to get going with the code, right here’s a bit sneak peek of three endpoints for querying a pockets’s native and NFT balances, together with the value of a token: 

getNativeBalance() – Fetch the native steadiness of any pockets:const response = await Moralis.EvmApi.steadiness.getNativeBalance({
“chain”: “0xa”,
“deal with”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
}); getWalletNFTs() – Get the NFT steadiness of any pockets:const response = await Moralis.EvmApi.nft.getWalletNFTs({
“chain”: “0xa”,
“deal with”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
}); getTokenPrice() – Question the value of any fungible token:const response = await Moralis.EvmApi.token.getTokenPrice({
“chain”: “0xa”,
“deal with”: “0x4200000000000000000000000000000000000042”
});

To discover different endpoints and our APIs in additional element, take a look at our official Moralis documentation web page or be a part of us on this article as we present you the way to construct on OP Mainnet with out breaking a sweat! Now, if you wish to observe alongside all through this tutorial, don’t neglect to enroll with Moralis. You possibly can create an account in a heartbeat, and also you’ll get instantaneous entry to our premier Web3 API suite! 

Overview 

We’ll kickstart in the present day’s article by exploring the ins and outs of OP Mainnet. In doing so, we’ll clarify what the community is, the way it works, and canopy some advantages of constructing dapps on OP Mainnet. From there, we’ll introduce you to Moralis and our industry-leading Optimism API suite. After you have an outline of Moralis, we’ll soar straight into the primary tutorial and present you the way to construct on OP Mainnet in three steps: 

Step 1: Create a Moralis Account and Get Your API KeyStep 2: Select OP Mainnet API EndpointsStep 3: Write a Script and Run the Code

To high issues off, we’ll cowl a short record of OP Mainnet initiatives to provide you some inspiration to your subsequent dapp! 

If this sounds thrilling, be a part of us within the following part as we begin by discovering what OP Mainnet is!

What’s OP Mainnet? 

OP Mainnet – often known as Optimism – launched in 2021, and it’s a low-cost and lightning-fast ETH layer-2 (L2) scaling answer. This blockchain community serves as a basis for an unlimited ecosystem that encompasses a big selection of decentralized purposes (dapps). This consists of cryptocurrency wallets, decentralized exchanges (DEXs), and different distinguished Web3 initiatives!

So, why do you have to construct dapps on OP Mainnet? To reply this query, let’s take a look at three advantages of this community: 

Velocity and Effectivity: OP Mainnet leverages “optimistic rollup” expertise to bundle a whole bunch of off-chain operations right into a single Ethereum transaction. In doing so, the community can considerably enhance Ethereum’s scalability by facilitating faster transactions at a low value. This makes OP Mainnet a extra environment friendly and cost-effective answer for finish customers and builders alike. Modern Infrastructure: By way of OP Mainnet’s Superchain venture, the community seeks to maximise interoperability and composability between blockchains utilizing the OP Stack. In doing so, OP Mainnet goals to combine a number of siloed L2 scaling options right into a single, unified layer.  Scalable Ecosystem: With EVM-equivalence, all Ethereum dapps will work completely on OP Mainnet. This implies you should utilize the identical established improvement instruments to construct on OP Mainnet as you’d on Ethereum. 

That provides you an outline of OP Mainnet and the advantages of this community. Within the subsequent part, we’ll introduce you to the best option to construct OP Mainnet dapps: Moralis! 

Best Strategy to Construct on OP Mainnet – Introducing Moralis 

Moralis is an industry-leading Web3 API supplier, and its toolset of absolutely OP Mainnet-compatible APIs at present powers blockchain and crypto purposes for tens of millions of customers worldwide!

In Moralis’ suite of Web3 APIs, you’ll discover greater than ten interfaces for numerous use instances, together with the Pockets API, NFT API, and Token API. With these premier APIs, it’s attainable to question blockchain knowledge with solely single strains of code. As such, you possibly can seamlessly construct OP Mainnet dapps each quicker and extra effectively utilizing Moralis.

Nevertheless, what makes Moralis stand out in comparison with the competitors? To reply this query, let’s discover three advantages of our premier Web3 APIs:

Complete: All our API responses are enriched with metadata, transaction decodings, market knowledge, deal with labels, and way more from a number of sources. This allows us to offer the {industry}’s most complete APIs which can be designed with the result in thoughts, minimizing the variety of calls it is advisable to construct Web3 initiatives. Easy: Moralis is the one Web3 API supplier that’s easy and intuitive to make use of. All of our requests and responses adhere to the identical customary and construction throughout numerous APIs tailor-made for particular use instances. Trusted: Our Web3 APIs are trusted by a whole bunch of 1000’s of builders and enterprise clients like MetaMask, Polygon, Delta, and so forth. So, if you wish to emulate among the Web3 {industry}’s largest names, think about using Moralis.

In case you’d prefer to discover all our interfaces, take a look at the official Web3 API web page! 

Additionally, do you know that you would be able to entry our Web3 APIs without spending a dime? Merely enroll with Moralis, and also you’ll be capable of construct OP Mainnet dapps with out breaking a sweat! 

3-Step Tutorial: How one can Construct on OP Mainnet 

Now, with an outline of Moralis, let’s dive into the primary part of this information and present you the way to construct on OP Mainnet in three easy steps: 

Step 1: Create a Moralis Account and Get Your API KeyStep 2: Select OP Mainnet API EndpointsStep 3: Write a Script and Run the Code

Nevertheless, earlier than you will get going, it is advisable to take care of a few conditions! 

Stipulations 

Moralis’ Web3 APIs are suitable with a number of programming languages, together with Python, Go, and so forth. Nevertheless, on this tutorial, we’ll be utilizing JavaScript and NodeJS. As such, earlier than you proceed, be sure to have the next prepared: 

Step 1: Create a Moralis Account and Get Your API Key 

The very first thing you’ll want is a Moralis account. As such, in the event you haven’t already, click on on the ”Begin for Free” button on the high proper of Moralis’ homepage and arrange an account: 

After creating an account and logging in, you’ll discover that Moralis has routinely arrange a brand new venture for you: 

The very first thing it’s possible you’ll need to do is rename the venture below ”Settings”: 

Subsequent, scroll all the way down to the ”API Keys” part and replica your Moralis API key: 

Please preserve it for now, as you’ll want it within the third step! 

Step 2: Select OP Mainnet API Endpoints 

On this part, we’ll dive a bit deeper into the assorted APIs of Moralis to provide you an outline of what OP Mainnet initiatives you possibly can construct with our premier instruments. Extra particularly, we’ll deal with the next three APIs and their respective endpoints: 

Pockets API NFT APIToken API

So, let’s kick this off by exploring the ins and outs of Moralis’ Pockets API! 

Pockets API 

Moralis’ Pockets API is the last word device for constructing cryptocurrency wallets and integrating pockets performance into OP Mainnet initiatives. The Pockets API helps 500+ million addresses throughout the most important blockchains, together with Ethereum, Polygon, BSC, and, after all, OP Mainnet! 

With this industry-leading device, you possibly can effortlessly question the native steadiness, NFT steadiness, profile knowledge, token transfers, transactions, and extra of any cryptocurrency deal with. As such, with the Pockets API, you possibly can construct every little thing from portfolio trackers to cryptocurrency wallets on OP Mainnet with out breaking a sweat. 

To focus on the accessibility of this device, listed here are three distinguished endpoints you’ll seemingly discover useful when constructing dapps: 

getNativeBalance() – Question the native steadiness of any pockets deal with: const response = await Moralis.EvmApi.steadiness.getNativeBalance({
“chain”: “0xa”,
“deal with”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
});

getNativeBalance() response: 

{
“steadiness”: “50640324378835108031”
} getWalletTransactions() – Fetch the native transaction historical past of any pockets:const response = await Moralis.EvmApi.transaction.getWalletTransactions({
“chain”: “0xa”,
“deal with”: “0x2a82ae142b2e62cb7d10b55e323acb1cab663a26”
});

getWalletTransactions() response: 

[
//…
{
“hash”: “0x6cbb692563bfb4adfa0850a4d68cbed848ba9be2b73fe04f42a49b81305e3eab”,
“nonce”: “13”,
“transaction_index”: “5”,
“from_address”: “0xcd3031fb7da6c6764466a6f77ec74e52a4cea810”,
“from_address_label”: null,
“to_address”: “0x2a82ae142b2e62cb7d10b55e323acb1cab663a26”,
“to_address_label”: null,
“value”: “27200000”,
“gas”: “21000”,
“gas_price”: “50000000”,
“input”: “0x”,
“receipt_cumulative_gas_used”: “363490”,
“receipt_gas_used”: “21000”,
“receipt_contract_address”: null,
“receipt_root”: null,
“receipt_status”: “0”,
“block_timestamp”: “2023-11-18T09:10:23.000Z”,
“block_number”: “112349923”,
“block_hash”: “0xd92193788b4f8ed5c991819ecf22433a4a5eca8b45974c90115c852635dcc4d3”,
“transfer_index”: [
112349923,
5
]
},
//…
] getWalletTokenBalances() – Get the token balances of any pockets: const response = await Moralis.EvmApi.token.getWalletTokenBalances({
“chain”: “0xa”,
“deal with”: “0x2a82ae142b2e62cb7d10b55e323acb1cab663a26”
});

getWalletTokenBalances() response:

[
{
“token_address”: “0x7f5c764cbc14f9669b88837ca1490cca17c31607”,
“symbol”: “USDC”,
“name”: “USD Coin”,
“logo”: null,
“thumbnail”: null,
“decimals”: 6,
“balance”: “2000000”,
“possible_spam”: false,
“verified_contract”: true
},
{
“token_address”: “0x4200000000000000000000000000000000000042”,
“symbol”: “OP”,
“name”: “Optimism”,
“logo”: null,
“thumbnail”: null,
“decimals”: 18,
“balance”: “1294044371320286807123702580”,
“possible_spam”: false,
“verified_contract”: true
},
//…
]

NFT API 

The NFT API helps over three million collections throughout ten+ EVM-compatible chains, together with every little thing from well-established initiatives to tokens that dropped simply seconds in the past. Consequently, this device takes care of all of your NFT data-related improvement wants! 

With the NFT API, you solely want single API calls to seamlessly fetch real-time NFT transfers, on-chain worth knowledge, enriched metadata, and extra. So, when working with this premier device, you possibly can construct every little thing from NFT marketplaces to Web3 video games with ease. 

Listed below are three distinguished endpoints to spotlight the accessibility of our NFT API: 

getNFTMetadata() – Get the metadata of any NFT: const response = await Moralis.EvmApi.nft.getNFTMetadata({
“chain”: “0xa”,
“deal with”: “0xB8Df6Cc3050cC02F967Db1eE48330bA23276A492”,
“tokenId”: “1”
});

getNFTMetadata() response:

{
“quantity”: “1”,
“token_id”: “1”,
“token_address”: “0xb8df6cc3050cc02f967db1ee48330ba23276a492”,
“contract_type”: “ERC721”,
“owner_of”: “0xb09fa44ef3bcbd1bf2d35d5644a19e188d4c05f6”,
“last_metadata_sync”: “2024-02-01T15:09:43.956Z”,
“last_token_uri_sync”: “2024-02-01T15:09:42.794Z”,
“metadata”: “{“identify”:”Optipunk #1″,”description”:”10,000 distinctive collectible characters with proof of possession saved on Optimism”,”attributes”:[{“trait_type”:”Type”,”value”:”Male”},{“trait_type”:”Accessory”,”value”:”Smile”},{“trait_type”:”Accessory”,”value”:”Mohawk”}],”picture”:”ipfs://QmbAhtqQqiSQqwCwQgrRB6urGc3umTskiuVpgX7FvHhutU/1.png”}”,
“block_number”: “97749”,
“block_number_minted”: “97749”,
“identify”: “OptiPunk”,
“image”: “OPPUNK”,
“token_hash”: “364af8044f93145cf5859151b46223a3”,
“token_uri”: “https://ipfs-metadata.moralis.io:2053/ipfs/QmZYqgu73bpovLt7Y4kYfCPUbbgdRfvcsja8YZsprKismB/1”,
“minter_address”: “0xb09fa44ef3bcbd1bf2d35d5644a19e188d4c05f6”,
“verified_collection”: false,
“possible_spam”: false
} getWalletNFTs() – Fetch the NFT steadiness of a pockets:const response = await Moralis.EvmApi.nft.getWalletNFTs({
“chain”: “0xa”,
“deal with”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
});

getWalletNFTs() response:

[
{
“amount”: “1”,
“token_id”: “3569948”,
“token_address”: “0xd12999440402d30f69e282d45081999412013844”,
“contract_type”: “ERC721”,
“owner_of”: “0xcba6a2397b322cf1389f6d1adc05f75f36b20116”,
“last_metadata_sync”: “2024-02-01T15:03:42.174Z”,
“last_token_uri_sync”: “2024-02-01T15:03:42.039Z”,
“metadata”: “//…”,
“block_number”: “107697133”,
“block_number_minted”: “107306857”,
“name”: “Omnichain Adventures”,
“symbol”: “OMNIA”,
“token_hash”: “f50ea59436c7eda79995a4e694d53f72”,
“token_uri”: “https://yvsbrs5apkpplrjba65gcet4zbe3wsv6i5y3e44vgxcunjwopsmq.arweave.net/xWQYy6B6nvXFIQe6YRJ8yEm7Sr5HcbJzlTXFRqbOfJk”,
“minter_address”: “0x8caf185283211beab492601825fee0b44f8633aa”,
“verified_collection”: false,
“possible_spam”: false
}
] getNFTOwners() – Question an array of all NFT homeowners for a given contract:const response = await Moralis.EvmApi.nft.getNFTOwners({
“chain”: “0xa”,
“deal with”: “0xB8Df6Cc3050cC02F967Db1eE48330bA23276A492”
});

getNFTOwners() response: 

[
{
“amount”: “1”,
“token_id”: “2329”,
“token_address”: “0xb8df6cc3050cc02f967db1ee48330ba23276a492”,
“contract_type”: “ERC721”,
“owner_of”: “0x0331969e189d63fbc31d771bb04ab44227d748d8”,
“last_metadata_sync”: “2024-02-01T15:10:32.987Z”,
“last_token_uri_sync”: “2024-02-01T15:10:31.531Z”,
“metadata”: “//…”,
“block_number”: “135838”,
“block_number_minted”: “135838”,
“name”: “OptiPunk”,
“symbol”: “OPPUNK”,
“token_hash”: “6206b15eef897e716a8f943c61718039”,
“token_uri”: “https://ipfs-metadata.moralis.io:2053/ipfs/QmZYqgu73bpovLt7Y4kYfCPUbbgdRfvcsja8YZsprKismB/2329”,
“minter_address”: “0x0331969e189d63fbc31d771bb04ab44227d748d8”,
“verified_collection”: false,
“possible_spam”: false
},
//…
]

Token API 

The Token API is the {industry}’s most complete device for fungible token knowledge, supporting each single token throughout greater than ten blockchains, together with OP Mainnet, Ethereum, Polygon, and BNB Sensible Chain! 

With the Token API, you possibly can seamlessly fetch costs, transfers, balances, metadata, and way more for any ERC-20 token. As such, when utilizing this premier API, you possibly can construct every little thing from DEXs to token explorers very quickly. 

To focus on the accessibility of the Token API, listed here are three endpoints you’ll discover useful when constructing OP Mainnet dapps: 

getTokenPrice() – Get the value of any fungible token: const response = await Moralis.EvmApi.token.getTokenPrice({
“chain”: “0xa”,
“deal with”: “0x4200000000000000000000000000000000000042”
});

getTokenPrice() response: 

{
“tokenName”: “Optimism”,
“tokenSymbol”: “OP”,
“tokenLogo”: null,
“tokenDecimals”: “18”,
“nativePrice”: {
“worth”: “1346688388542655”,
“decimals”: 18,
“identify”: “Ether”,
“image”: “ETH”,
“deal with”: “0x4200000000000000000000000000000000000006”
},
“usdPrice”: 3.357083520606333,
“usdPriceFormatted”: “3.357083520606332971”,
“exchangeName”: “Uniswap v3”,
“exchangeAddress”: “0x1F98431c8aD98523631AE4a59f267346ea31F984”,
“tokenAddress”: “0x4200000000000000000000000000000000000042”,
“priceLastChangedAtBlock”: “115945253”,
“verifiedContract”: true
} getTokenMetadata() – Fetch the metadata of any token:const response = await Moralis.EvmApi.token.getTokenMetadata({
“chain”: “0xa”,
“addresses”: [
“0x4200000000000000000000000000000000000042”
]
});

getTokenMetadata() response:

[
{
“address”: “0x4200000000000000000000000000000000000042”,
“address_label”: null,
“name”: “Optimism”,
“symbol”: “OP”,
“decimals”: “18”,
“logo”: null,
“logo_hash”: null,
“thumbnail”: null,
“block_number”: “0”,
“validated”: 1,
“created_at”: null,
“possible_spam”: false,
“verified_contract”: true
}
] getTokenTransfers() – Question all transactions for a given token contract: const response = await Moralis.EvmApi.token.getTokenTransfers({
“chain”: “0xa”,
“deal with”: “0x4200000000000000000000000000000000000042”
});

getTokenTransfers() response:

[
{
“token_name”: “Optimism”,
“token_symbol”: “OP”,
“token_logo”: null,
“token_decimals”: “18”,
“from_address”: “0x666936a007c8c2e70dd5aae9151fd50de858fb16”,
“from_address_label”: null,
“to_address”: “0x2580fe0cdd3a2300f4fe9637e7d4b44d47f1f63b”,
“to_address_label”: null,
“address”: “0x4200000000000000000000000000000000000042”,
“block_hash”: “0x4f99ed7e331b422c87d73eed2a60e98417d072ed64d0ceab57e7479d76aeb58b”,
“block_number”: “115945333”,
“block_timestamp”: “2024-02-09T14:37:23.000Z”,
“transaction_hash”: “0xf8e82cbe28afb6e3adea9ef0c34132588ff29a8cc16b0cc48cf516efc0a68d05”,
“transaction_index”: 10,
“log_index”: 48,
“value”: “600000000000000000000”,
“possible_spam”: false,
“value_decimal”: “600”,
“verified_contract”: true
},
]

Step 3: Write a Script and Run the Code

When you select the suitable endpoints to your specific venture, all that continues to be is so that you can name them. And we’ll present you precisely how to take action on this remaining step of our tutorial! 

On this case, we’ll use the getWalletTokenBalances() endpoint for instance. Nevertheless, in the event you’re fascinated about another endpoint, fear not, as you possibly can observe just about the identical steps for all endpoints. 

Begin by establishing a folder in your IDE and run the terminal command beneath to initialize a brand new venture:

npm init

Subsequent, run the instructions beneath within the terminal to put in the Moralis SDK:

npm set up moralis @moralisweb3/common-evm-utils

From right here, open your ”bundle.json” file and add ”sort”: ”module”: 

You possibly can then create a brand new ”index.js” file and add the next code: 

import Moralis from ‘moralis’;

attempt {
await Moralis.begin({
apiKey: “YOUR_API_KEY”
});

const response = await Moralis.EvmApi.token.getWalletTokenBalances({
“chain”: “0xa”,
“deal with”: “0x2a82ae142b2e62cb7d10b55e323acb1cab663a26”
});

console.log(response.uncooked);
} catch (e) {
console.error(e);
}

You now must make a number of small configurations to the code. Initially, it is advisable to substitute YOUR_API_KEY with the important thing you copied throughout step one. Subsequent, you additionally must configure the deal with parameter to suit your question: 

From right here, you solely must run the code. To take action, open a brand new terminal and execute the command beneath within the venture’s root folder:

node index.js

In return, you’ll get a response containing an array of the token balances of the required deal with. It should look one thing like this: 

[
{
“token_address”: “0x7f5c764cbc14f9669b88837ca1490cca17c31607”,
“symbol”: “USDC”,
“name”: “USD Coin”,
“logo”: null,
“thumbnail”: null,
“decimals”: 6,
“balance”: “2000000”,
“possible_spam”: false,
“verified_contract”: true
},
{
“token_address”: “0x4200000000000000000000000000000000000042”,
“symbol”: “OP”,
“name”: “Optimism”,
“logo”: null,
“thumbnail”: null,
“decimals”: 18,
“balance”: “1294044371320286807123702580”,
“possible_spam”: false,
“verified_contract”: true
},
//…
]

That’s it! You now know the way to question every little thing from pockets balances to token transactions utilizing Moralis’ premier Web3 API suite. In flip, you’re now able to take your improvement endeavors to the subsequent degree and begin constructing OP Mainnet dapps!

Dapp Concepts – Exploring a Checklist of Optimism Initiatives

With a greater understanding of how one can construct dapps on OP Mainnet utilizing Moralis’ Web3 APIs, you may now be on the lookout for some inspiration to your subsequent venture. Consequently, we’ll take this part to discover 5 distinguished OP Mainnet initiatives: 

If you wish to discover initiatives not coated above, please take a look at our complete record of high Optimism dapps on Moralis’ Web3 Wiki!

Abstract: How one can Construct on OP Mainnet

In in the present day’s article, we confirmed you the way to construct on OP Mainnet with Moralis in three easy steps: 

Step 1: Create a Moralis Account and Get Your API KeyStep 2: Select OP Mainnet API EndpointsStep 3: Write a Script and Run the Code

When you’ve got adopted alongside this far, you now know the way to construct dapps on Optimism seamlessly! Additionally, in the event you haven’t already, don’t neglect to enroll with Moralis. You possibly can enroll with the clicking of some buttons, and also you’ll acquire instantaneous entry to our industry-leading OP Mainnet API suite so you can begin constructing dapps quicker and extra effectively!