In at this time’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 initiatives with solely single API calls. Consequently, when leveraging Moralis, you can begin constructing OP Mainnet initiatives sooner and extra effectively!
Should you’re wanting 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 value 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 value 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 overlook to enroll with Moralis. You may create an account in a heartbeat, and also you’ll get on the spot entry to our premier Web3 API suite!
Overview
We’ll kickstart at this time’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. Upon getting an summary 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 high issues off, we’ll cowl a quick listing of OP Mainnet initiatives to offer you some inspiration on 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 called 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 wide selection of decentralized functions (dapps). This contains cryptocurrency wallets, decentralized exchanges (DEXs), and different distinguished Web3 initiatives!
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” expertise to bundle lots 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 price. This makes OP Mainnet a extra environment friendly and cost-effective answer for finish customers and builders alike. Modern Infrastructure: Via 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 use the identical established growth instruments to construct on OP Mainnet as you’d on Ethereum.
That offers you an summary of OP Mainnet and the advantages of this community. Within the subsequent part, we’ll introduce you to the simplest technique to construct OP Mainnet dapps: Moralis!
Best Method to Construct on OP Mainnet – Introducing Moralis
Moralis is an industry-leading Web3 API supplier, and its toolset of totally OP Mainnet-compatible APIs at the moment powers blockchain and crypto functions for hundreds of thousands 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 potential 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 you must 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 normal and construction throughout varied APIs tailor-made for particular use circumstances. Trusted: Our Web3 APIs are trusted by lots of of hundreds of builders and enterprise prospects like MetaMask, Polygon, Delta, and many others. So, if you wish to emulate among 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 may entry our Web3 APIs without cost? Merely enroll with Moralis, and also you’ll be capable to construct OP Mainnet dapps with out breaking a sweat!
3-Step Tutorial: The way to Construct on OP Mainnet
Now, with an summary 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, you must take care of a few stipulations!
Conditions
Moralis’ Web3 APIs are suitable with a number of programming languages, together with Python, Go, and many others. 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, if you happen to 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 robotically arrange a brand new venture for you:
The very first thing it’s possible you’ll need to do is rename the venture beneath ”Settings”:
Subsequent, scroll right down to the ”API Keys” part and replica 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 summary of what OP Mainnet initiatives 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 software 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, in fact, OP Mainnet!
With this industry-leading software, 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 every thing from portfolio trackers to cryptocurrency wallets on OP Mainnet with out breaking a sweat.
To spotlight the accessibility of this software, listed here are three distinguished 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 every thing from well-established initiatives 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 value information, enriched metadata, and extra. So, when working with this premier software, you may construct every thing from NFT marketplaces to Web3 video games with ease.
Listed here are three distinguished endpoints to focus on 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 software 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 every thing from DEXs to token explorers very quickly.
To spotlight 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”,
“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 on 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 last step of our tutorial!
On this case, we’ll use the getWalletTokenBalances() endpoint for example. Nonetheless, if you happen to’re involved in some other endpoint, fear not, as you may 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 venture:
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 ”package deal.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’;
attempt {
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 have to make a number of small configurations to the code. To start with, you must change YOUR_API_KEY with the important thing you copied throughout step one. Subsequent, you additionally have to configure the handle 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 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 can 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 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 following degree and begin constructing OP Mainnet dapps!
Dapp Concepts – Exploring a Checklist of Optimism Tasks
With a greater understanding of how one can construct dapps on OP Mainnet utilizing Moralis’ Web3 APIs, you may now be in search of some inspiration on 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 try our complete listing of high Optimism dapps on Moralis’ Web3 Wiki!
Abstract: The way to Construct on OP Mainnet
In at this time’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
If in case you have adopted alongside this far, you now know the right way to construct dapps on Optimism seamlessly! Additionally, if you happen to haven’t already, don’t overlook to enroll with Moralis. You may enroll with the clicking of some buttons, and also you’ll achieve on the spot entry to our industry-leading OP Mainnet API suite so you can begin constructing dapps sooner and extra effectively!
