In immediately’s article, we’ll present you find out how to construct decentralized functions (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 initiatives with solely single API calls. Consequently, when leveraging Moralis, you can begin constructing OP Mainnet initiatives sooner and extra effectively!
Should you’re desirous 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 worth of a token:
getNativeBalance() – Fetch the native steadiness of any pockets:const response = await Moralis.EvmApi.steadiness.getNativeBalance({
“chain”: “0xa”,
“handle”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
}); getWalletNFTs() – Get the NFT steadiness 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, take a look at our official Moralis documentation web page or be a part of us on this article as we present you find out how 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’ll be able to create an account in a heartbeat, and also you’ll get prompt entry to our premier Web3 API suite!
Overview
We’ll kickstart immediately’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 leap straight into the principle tutorial and present you find out how 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 record of OP Mainnet initiatives to present you some inspiration on 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 – 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 enormous ecosystem that encompasses a wide selection of decentralized functions (dapps). This contains 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 have a look at three advantages of this community:
Pace and Effectivity: OP Mainnet leverages “optimistic rollup” expertise to bundle a whole lot 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. Progressive 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 should use the identical established improvement instruments to construct on OP Mainnet as you’ll 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 best solution 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 totally OP Mainnet-compatible APIs at present powers blockchain and crypto functions 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 doable to question blockchain information with solely single strains of code. As such, you possibly can 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 supply the {industry}’s most complete APIs which are designed with the result in thoughts, minimizing the variety of calls you’ll want 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 varied APIs tailor-made for particular use circumstances. Trusted: Our Web3 APIs are trusted by a whole lot of 1000’s of builders and enterprise clients like MetaMask, Polygon, Delta, and so on. So, if you wish to emulate a number of the Web3 {industry}’s largest names, think about using Moralis.
Should you’d prefer to discover all our interfaces, take a look at the official Web3 API web page!
Additionally, do you know you can entry our Web3 APIs free of charge? Merely enroll with Moralis, and also you’ll be capable to construct OP Mainnet dapps with out breaking a sweat!
3-Step Tutorial: Find out 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 find out how to construct on OP Mainnet in three simple 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, you’ll want to cope with a few stipulations!
Conditions
Moralis’ Web3 APIs are suitable with a number of programming languages, together with Python, Go, and so on. 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 mechanically arrange a brand new challenge for you:
The very first thing you could wish to do is rename the challenge beneath ”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 present you an summary 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, in fact, OP Mainnet!
With this industry-leading device, you possibly can effortlessly question the native steadiness, NFT steadiness, profile information, token transfers, transactions, and extra of any cryptocurrency handle. 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 device, listed below are three distinguished endpoints you’ll probably discover useful when constructing dapps:
getNativeBalance() – Question the native steadiness of any pockets handle: const response = await Moralis.EvmApi.steadiness.getNativeBalance({
“chain”: “0xa”,
“handle”: “0xCBA6a2397b322CF1389f6d1adc05F75F36B20116”
});
getNativeBalance() response:
{
“steadiness”: “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 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 information, enriched metadata, and extra. So, when working with this premier device, you possibly can construct every 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”,
“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 steadiness 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 house owners 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 device 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 rather 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 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 on 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 remaining step of our tutorial!
On this case, we’ll use the getWalletTokenBalances() endpoint for example. Nonetheless, if you happen to’re concerned about some other endpoint, fear not, as you possibly can observe just about the identical steps for all endpoints.
Begin by organising a folder in your IDE and run the terminal command beneath to initialize a brand new challenge:
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’ll be able to 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 must make just a few small configurations to the code. To start with, you’ll want to exchange 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 challenge’s root folder:
node index.js
In return, you’ll get a response containing an array of the token balances of the desired handle. It would 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 find out how 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 improvement endeavors to the following stage and begin constructing OP Mainnet dapps!
Dapp Concepts – Exploring a Listing 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 on your subsequent challenge. 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: Find out how to Construct on OP Mainnet
In immediately’s article, we confirmed you find out how 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
In case you have adopted alongside this far, you now know find out how to construct dapps on Optimism seamlessly! Additionally, if you happen to haven’t already, don’t neglect to enroll with Moralis. You’ll be able to enroll with the press of some buttons, and also you’ll acquire prompt entry to our industry-leading OP Mainnet API suite so you can begin constructing dapps sooner and extra effectively!
