How to use OP Mainnet RPC Endpoint

You can use the OP Mainnet RPC Endpoint to connect with Web3 libraries like Ethers.js, Web3, or Web3 wallets like MetaMask, WalletConnect, WalletConnect. This allows you to easily interact with blockchain and use decentralized applications on the OP Mainnet

Web3 libraries

web3js

   const Web3 = require('web3');

   // Replace 'YOUR_RPC_URL' with the OP Mainnet RPC endpoint URL
   const rpcURL = https://optimism.llamarpc.com;

   // Create a new Web3 instance using the RPC endpoint
   const web3 = new Web3(new Web3.providers.HttpProvider(rpcURL));

   // Now you can use the 'web3' object to interact with OP Mainnet
   web3.eth.getBlockNumber()
      .then(blockNumber => {
         console.log('Latest block number:', blockNumber);
      })
      .catch(error => {
         console.error('Error:', error);
      });
   

ethersjs

   const ethers = require('ethers');

   // Replace 'YOUR_RPC_URL' with the OP Mainnet RPC endpoint URL
   const rpcURL = https://optimism.llamarpc.com;

   // Create a provider using the OP Mainnet RPC endpoint
   const provider = new ethers.providers.JsonRpcProvider(rpcURL);

   // You can use the 'provider' object to interact with OP Mainnet
   provider.getBlockNumber()
      .then(blockNumber => {
         console.log('Latest block number:', blockNumber);
      })
      .catch(error => {
         console.error('Error:', error);
      });
   

Web3 wallets (Metamask, WalletConnect, Coinbase Wallet, Taho...)