Gasless Transactions
Only for Third-party wallets
The Arcana Gasless (Standalone) SDK is meant for use only in case where an app requires to enable gasless transactions in third-party browser based wallets. To enable gasless transactions in the Arcana wallet, you must install and integrate with the Arcana Auth SDK and use its built-in gasless feature.
Pre-requisites
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Make sure the app is registered and a unique Client ID assigned to it.
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Set up gas tanks on one or more supported networks and deposit funds.
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The Arcana Gasless (Standalone) SDK is installed and your app is integrated with it.
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Make sure you have added custom code to onboard the users. Only authenticated users should be allowed to perform gasless transactions.
Add Gasless Transactions
After initializing the Arcana Gasless (Standalone) SDK, you can perform transactions using the doTx() method.
const erc20abi = [...];
let amount = 0.1;
const erc20Address = "0x2d7aC0907961c7.......45f981Ed8373b5dF86";
const toAddress = "0x723455665060698....87689dA78E25";
const Erc20Interface = new ethers.utils.Interface(erc20abi);
const encodedData = Erc20Interface.encodeFunctionData("transfer", [
toAddress,
ethers.utils.parseEther(amount + ""),
]);
// You need to create transaction objects of the following interface
const tx1 = {
from: scw.getSCWAddress(),
to: erc20Address, // destination smart contract address
data: encodedData,
};
// Check balance
// Use scw.getPaymaster() to check whether gas tanks are adequately funded
console.log("Paymaster Balance: " + (await scw.getPaymasterBalance()) / 1e18);
if (await scw.getPaymasterBalance()/1e18) > 0 {
let tx = await scw.doTx(tx1);
await tx.wait();
console.log(`Transfer done ${tx.userOpHash}`)
} else {
console.log("Insufficient funds in the gas tank.")
}
What's Next?
After adding code for gasless transactions with the help of the Arcana Gasless (Standalone) SDK, you are ready to deploy the app on the Testnet. Learn more...
See also
- 'Gasless' integration example:
sample-gasless-metamask-onlysubmodule in Auth Examples - Configure Gasless Settings
- Arcana Gasless (Standalone) SDK Quick Start Guide
- Arcana Gasless (Standalone) SDK Usage Guide
- Gasless Error Messages