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In in the present day’s article, we’ll present you the right way to construct decentralized functions (dapps) on OP Mainnet utilizing Moralis’ industry-leading Web3 APIs. With our premier APIs, you may 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 sooner and extra effectively!
When you’re desperate to get going with the code, right here’s a little bit 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”,
“handle”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
}); getWalletNFTs() – Get the NFT stability of any pockets:const response = await Moralis.EvmApi.nft.getWalletNFTs({
“chain”: “0xa”,
“handle”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
}); getTokenPrice() – Question the worth of any fungible token:const response = await Moralis.EvmApi.token.getTokenPrice({
“chain”: “0xa”,
“handle”: “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 the right way to 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 possibly can create an account in a heartbeat, and also you’ll get immediate 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 principle tutorial and present you the right 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 prime issues off, we’ll cowl a short listing of OP Mainnet tasks to offer you some inspiration in 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 answer. This blockchain community serves as a basis for an unlimited ecosystem that encompasses a big selection of decentralized functions (dapps). This contains 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 take a look at three advantages of this community:
Pace and Effectivity: OP Mainnet leverages “optimistic rollup” know-how 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. Revolutionary Infrastructure: By 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 growth 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 approach to construct OP Mainnet dapps: Moralis!
Best Solution 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 functions for thousands and thousands of customers worldwide!
In Moralis’ suite of Web3 APIs, you’ll discover greater than ten interfaces for numerous 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 strains of code. As such, you may seamlessly construct OP Mainnet dapps each sooner 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, handle labels, and rather more from a number of sources. This permits us to offer the {industry}’s most complete APIs which are designed with the result in thoughts, minimizing the variety of calls it’s essential 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 commonplace and construction throughout numerous APIs tailor-made for particular use circumstances. 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 greatest names, think about using Moralis.
When you’d prefer 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 without cost? Merely enroll with Moralis, and also you’ll be capable of construct OP Mainnet dapps with out breaking a sweat!
3-Step Tutorial: The best way to Construct on OP Mainnet
Now, with an outline of Moralis, let’s dive into the principle part of this information and present you the right 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
Nonetheless, earlier than you will get going, it’s essential 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. Nonetheless, 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, 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 venture for you:
The very first thing you might wish to do is rename the venture below ”Settings”:
Subsequent, scroll right down to the ”API Keys” part and duplicate your Moralis API key:
Please maintain 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 offer you an outline of what OP Mainnet tasks you may 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 last word instrument 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 instrument, you may effortlessly question the native stability, NFT stability, profile information, token transfers, transactions, and extra of any cryptocurrency handle. As such, with the Pockets API, you may construct all the pieces from portfolio trackers to cryptocurrency wallets on OP Mainnet with out breaking a sweat.
To focus on the accessibility of this instrument, listed below are three outstanding endpoints you’ll seemingly discover useful when constructing dapps:
getNativeBalance() – Question the native stability of any pockets handle: const response = await Moralis.EvmApi.stability.getNativeBalance({
“chain”: “0xa”,
“handle”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
});
getNativeBalance() response:
{
“stability”: “50640324378835108031”
} getWalletTransactions() – Fetch the native transaction historical past of any pockets:const response = await Moralis.EvmApi.transaction.getWalletTransactions({
“chain”: “0xa”,
“handle”: “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”,
“handle”: “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 all the pieces from well-established tasks to tokens that dropped simply seconds in the past. Consequently, this instrument 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 instrument, you may construct all the pieces 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”,
“handle”: “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”,
“handle”: “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”,
“handle”: “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 instrument for fungible token information, supporting each single token throughout greater than ten blockchains, together with OP Mainnet, Ethereum, Polygon, and BNB Good Chain!
With the Token API, you may seamlessly fetch costs, transfers, balances, metadata, and rather more for any ERC-20 token. As such, when utilizing this premier API, you may construct all the pieces from DEXs to token explorers very quickly.
To focus on the accessibility of the Token API, listed below 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”,
“handle”: “0x4200000000000000000000000000000000000042”
});
getTokenPrice() response:
{
“tokenName”: “Optimism”,
“tokenSymbol”: “OP”,
“tokenLogo”: null,
“tokenDecimals”: “18”,
“nativePrice”: {
“worth”: “1346688388542655”,
“decimals”: 18,
“title”: “Ether”,
“image”: “ETH”,
“handle”: “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”,
“handle”: “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 in your explicit venture, all that is still 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 example. Nonetheless, for those who’re all for some other endpoint, fear not, as you may comply with 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 ”kind”: ”module”:
You possibly can 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”,
“handle”: “0x2a82ae142b2e62cb7d10b55e323acb1cab663a26”
});
console.log(response.uncooked);
} catch (e) {
console.error(e);
}
You now must make a number of small configurations to the code. To begin with, it’s essential to change YOUR_API_KEY with the important thing you copied throughout step one. Subsequent, you additionally must configure the handle 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 handle. 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 right way to question all the pieces 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 degree and begin constructing OP Mainnet dapps!
Dapp Concepts – Exploring a Record of Optimism Tasks
With a greater understanding of how one can construct dapps on OP Mainnet utilizing Moralis’ Web3 APIs, you may now be searching for some inspiration in your subsequent venture. Consequently, we’ll take this part to discover 5 outstanding OP Mainnet tasks:
If you wish to discover tasks not coated above, please try our complete listing of prime Optimism dapps on Moralis’ Web3 Wiki!
Abstract: The best way to Construct on OP Mainnet
In in the present day’s article, we confirmed you the right 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 have adopted alongside this far, you now know the right way to construct dapps on Optimism seamlessly! Additionally, for those who haven’t already, don’t neglect to enroll with Moralis. You possibly can enroll with the press of some buttons, and also you’ll achieve immediate entry to our industry-leading OP Mainnet API suite so you can begin constructing dapps sooner and extra effectively!
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