On this page we’ll run through some introductory code on getting set up with using Etherspot Prime on Flare.

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Installing packages

Prerequisite You should have installed Node.js (version 18.10.0 or higher).

Install Etherspot Prime SDK with this command

npm i @etherspot/prime-sdk --save

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A look into the code

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Importing the SDK

  import { PrimeSdk } from '@etherspot/prime-sdk';

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Getting the smart account address

If you’re unsure about the difference between key based accounts and smart contract accounts, please take a look at this page

In this example we simply create a key based wallet with ethers.js like so:

const randomWallet = ethers.Wallet.createRandom();
setEoaPrivateKey(randomWallet.privateKey);

Then we use this key based wallet to instantiate the SDK on Coston2 and get the wallet address.

const primeSdk = new PrimeSdk({ privateKey: privateKey}, { chainId: 114, bundlerProvider: new EtherspotBundler(114, bundlerApiKey) });
const address: string = await primeSdk.getCounterFactualAddress();
console.log(address);

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Sending funds to another address

Now that we have a smart contract account on Coston2, we can fund it using Flare’s offical faucet.

Once we have funds on our account (you can check this here) we can try a simple send operation. This can be done through creating a sendFunds function like so:

We’ll want to save destinationAddress and amount in some input field within the dapp.

const sendFunds = async () => {

    const primeSdk = new PrimeSdk({ privateKey: eoaPrivateKey}, { chainId: 114, bundlerProvider: new EtherspotBundler(114, bundlerApiKey) });
    // clear the transaction batch
    await  primeSdk.clearUserOpsFromBatch();

    // add transactions to the batch
    const transactionBatch = await primeSdk.addUserOpsToBatch({to: destinationAddress, value: ethers.utils.parseEther(destinationAddress)});

    // estimate transactions added to the batch and get the fee data for the UserOp
    const op = await primeSdk.estimate();

    // sign the UserOp and send to bundler
    const uoHash = await primeSdk.send(op);
    console.log(`UserOpHash: ${uoHash}`);
}

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Next steps

For next steps you can look at functions or examples to tailor the dapp to what you’re trying to achieve.

IntroAccount Abstraction on Mantle