Viem

The Viem library has first-class support for Abstract by providing a set of extensions to interact with paymasters, smart contract wallets, and more. This page will walk through how to configure Viem to utilize Abstract’s features.

​

1. Installation

Install the viem package.

npm install viem

​

2. Client Configuration

Configure your Viem client using abstractTestnet as the chain and extend it with eip712WalletActions.

Learn more on the official viem documentation.

​

Reading Blockchain Data

Use a public client to fetch data from the blockchain via an RPC.

const balance = await publicClient.getBalance({
  address: "0x8e729E23CDc8bC21c37a73DA4bA9ebdddA3C8B6d",
});

​

Sending Transactions

Use a wallet client to send transactions to the blockchain.

const transactionHash = await walletClient.sendTransaction({
  to: "0x8e729E23CDc8bC21c37a73DA4bA9ebdddA3C8B6d",
  data: "0x69",
});

​

Paymasters

Viem has native support for Abstract paymasters.

Provide the paymaster and paymasterInput fields when sending a transaction.

View Viem documentation.

const hash = await walletClient.sendTransaction({
  to: "0x8e729E23CDc8bC21c37a73DA4bA9ebdddA3C8B6d",
  paymaster: "0x5407B5040dec3D339A9247f3654E59EEccbb6391", // Your paymaster contract address
  paymasterInput: "0x", // Any additional data to be sent to the paymaster
});

​

Smart Contract Wallets

Viem also has native support for using smart contract wallets. This means you can submit transactions from a smart contract wallet by providing a smart wallet account as the account field to the client.

View Viem documentation.