In at present’s article, we’ll present you 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 information into your tasks with solely single API calls. Consequently, when leveraging Moralis, you can begin constructing OP Mainnet tasks quicker and extra effectively!
Should you’re wanting to get going with the code, right here’s slightly sneak peek of three endpoints for querying a pockets’s native and NFT balances, together with the worth of a token:
getNativeBalance() – Fetch the native stability of any pockets:const response = await Moralis.EvmApi.stability.getNativeBalance({
“chain”: “0xa”,
“deal with”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
}); getWalletNFTs() – Get the NFT stability of any pockets:const response = await Moralis.EvmApi.nft.getWalletNFTs({
“chain”: “0xa”,
“deal with”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
}); getTokenPrice() – Question the worth 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, try our official Moralis documentation web page or be part of us on this article as we present you construct on OP Mainnet with out breaking a sweat! Now, if you wish to comply with alongside all through this tutorial, don’t neglect to enroll with Moralis. You may create an account in a heartbeat, and also you’ll get instantaneous entry to our premier Web3 API suite!
Overview
We’ll kickstart at present’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 summary of Moralis, we’ll bounce straight into the principle tutorial and present you 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 prime issues off, we’ll cowl a short record of OP Mainnet tasks to present you some inspiration to your subsequent dapp!
If this sounds thrilling, be part of us within the following part as we begin by discovering what OP Mainnet is!
What’s OP Mainnet?
OP Mainnet – also referred to as Optimism – launched in 2021, and it’s a low-cost and lightning-fast ETH layer-2 (L2) scaling resolution. 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 outstanding Web3 tasks!
So, why must you construct dapps on OP Mainnet? To reply this query, let’s have a look at three advantages of this community:
Pace and Effectivity: OP Mainnet leverages “optimistic rollup” expertise to bundle tons of 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 resolution for finish customers and builders alike. Revolutionary Infrastructure: By OP Mainnet’s Superchain challenge, 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 need to use the identical established growth instruments to construct on OP Mainnet as you’ll on Ethereum.
That provides you an summary of OP Mainnet and the advantages of this community. Within the subsequent part, we’ll introduce you to the best solution to construct OP Mainnet dapps: Moralis!
Best Technique to Construct on OP Mainnet – Introducing Moralis
Moralis is an industry-leading Web3 API supplier, and its toolset of totally OP Mainnet-compatible APIs presently 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 varied use circumstances, together with the Pockets API, NFT API, and Token API. With these premier APIs, it’s attainable to question blockchain information with solely single traces of code. As such, you possibly can seamlessly construct OP Mainnet dapps each quicker and extra effectively utilizing Moralis.
Nonetheless, 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 information, deal with labels, and far more from a number of sources. This allows us to offer the {industry}’s most complete APIs which are designed with the result in thoughts, minimizing the variety of calls it’s worthwhile to construct Web3 tasks. 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 normal and construction throughout varied APIs tailor-made for particular use circumstances. Trusted: Our Web3 APIs are trusted by tons of of hundreds of builders and enterprise prospects like MetaMask, Polygon, Delta, and so forth. So, if you wish to emulate a few of the Web3 {industry}’s largest names, think about using Moralis.
Should you’d wish to discover all our interfaces, try the official Web3 API web page!
Additionally, do you know that you would be able to entry our Web3 APIs free of charge? Merely join with Moralis, and also you’ll have the ability to construct OP Mainnet dapps with out breaking a sweat!
3-Step Tutorial: Learn how to Construct on OP Mainnet
Now, with an summary of Moralis, let’s dive into the principle part of this information and present you 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
Nonetheless, earlier than you may get going, it’s worthwhile to cope with a few conditions!
Stipulations
Moralis’ Web3 APIs are suitable with a number of programming languages, together with Python, Go, and so forth. Nonetheless, on this tutorial, we’ll be utilizing JavaScript and NodeJS. As such, earlier than you proceed, ensure you 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, for those who haven’t already, click on on the ”Begin for Free” button on the prime 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 challenge for you:
The very first thing chances are you’ll wish to do is rename the challenge beneath ”Settings”:
Subsequent, scroll all the way down to the ”API Keys” part and duplicate 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 varied APIs of Moralis to present you an summary of what OP Mainnet tasks you possibly can construct with our premier instruments. Extra particularly, we’ll give attention to 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 final word software for constructing cryptocurrency wallets and integrating pockets performance into OP Mainnet tasks. 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 software, you possibly can effortlessly question the native stability, NFT stability, profile information, token transfers, transactions, and extra of any cryptocurrency deal with. As such, with the Pockets API, you possibly can construct every thing from portfolio trackers to cryptocurrency wallets on OP Mainnet with out breaking a sweat.
To focus on the accessibility of this software, listed here are three outstanding endpoints you’ll seemingly discover useful when constructing dapps:
getNativeBalance() – Question the native stability of any pockets deal with: const response = await Moralis.EvmApi.stability.getNativeBalance({
“chain”: “0xa”,
“deal with”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
});
getNativeBalance() response:
{
“stability”: “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 thing from well-established tasks to tokens that dropped simply seconds in the past. Consequently, this software takes care of all of your NFT data-related growth wants!
With the NFT API, you solely want single API calls to seamlessly fetch real-time NFT transfers, on-chain worth information, enriched metadata, and extra. So, when working with this premier software, you possibly can construct every thing from NFT marketplaces to Web3 video games with ease.
Listed here are three outstanding 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”: “{“title”:”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”,
“title”: “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 stability 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 software for fungible token information, 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 far more for any ERC-20 token. As such, when utilizing this premier API, you possibly can construct every 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 worth 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,
“title”: “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 explicit challenge, all that continues to be is so that you can name them. And we’ll present you precisely how to take action on this closing step of our tutorial!
On this case, we’ll use the getWalletTokenBalances() endpoint for instance. Nonetheless, for those who’re concerned with every other endpoint, fear not, as you possibly can comply with just about the identical steps for all endpoints.
Begin by organising a folder in your IDE and run the terminal command under to initialize a brand new challenge:
npm init
Subsequent, run the instructions under 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 ”kind”: ”module”:
You may then create a brand new ”index.js” file and add the next code:
import Moralis from ‘moralis’;
strive {
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 have to make a couple of small configurations to the code. Initially, it’s worthwhile to change YOUR_API_KEY with the important thing you copied throughout step one. Subsequent, you additionally have to configure the deal with parameter to suit your question:
From right here, you solely have to run the code. To take action, open a brand new terminal and execute the command under within the challenge’s root folder:
node index.js
In return, you’ll get a response containing an array of the token balances of the desired deal with. It’ll 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 question every thing from pockets balances to token transactions utilizing Moralis’ premier Web3 API suite. In flip, you’re now able to take your growth endeavors to the subsequent stage and begin constructing OP Mainnet dapps!
Dapp Concepts – Exploring a Record of Optimism Initiatives
With a greater understanding of how one can construct dapps on OP Mainnet utilizing Moralis’ Web3 APIs, you would possibly now be searching for some inspiration to your subsequent challenge. Consequently, we’ll take this part to discover 5 outstanding OP Mainnet tasks:
If you wish to discover tasks not lined above, please try our complete record of prime Optimism dapps on Moralis’ Web3 Wiki!
Abstract: Learn how to Construct on OP Mainnet
In at present’s article, we confirmed you 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 construct dapps on Optimism seamlessly! Additionally, for those who haven’t already, don’t neglect to enroll with Moralis. You may join with the press 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!
