Build reliable apps & libraries with lightweight, composable, and type-safe modules that interface with Ethereum

Get Started Why viem?View on GitHub

npmpnpmyarn

bash

npm i viem

bash

pnpm i viem

bash

yarn add viem

Modular

Composable modules to build apps & libraries with speed

Lightweight

Tiny (only 35kB!) bundle size optimized for tree-shaking

Performant

Optimized architecture compared to alternative libraries like Ethers.js

Typed APIs

Flexible programmatic APIs with extensive TypeScript typing

Overview

ts

// 1. Import modules.
import { createPublicClient, http } from 'viem'
import { mainnet } from 'viem/chains'

// 2. Set up your client with desired chain & transport.
const client = createPublicClient({
  chain: mainnet,
  transport: http(),
})

// 3. Consume an action!
const blockNumber = await client.getBlockNumber()

Features

viem supports all these features out-of-the-box:

Abstractions over the JSON-RPC API to make your life easier
First-class APIs for interacting with Smart Contracts
Language closely aligned to official Ethereum terminology
Import your Browser Extension, WalletConnect or Private Key Wallet
Browser native BigInt, instead of large BigNumber libraries
Utilities for working with ABIs (encoding/decoding/inspection)
TypeScript ready (infer types from ABIs and EIP-712 Typed Data)
First-class support for Anvil & Hardhat
Test suite running against forked Ethereum network

Community

Check out the following places for more wagmi-related content:

Follow @wagmi_sh, @jakemoxey, and @awkweb on Twitter for project updates
Join the discussions on GitHub
Share your project/organization that uses viem

Support

Help support future development and make wagmi a sustainable open-source project: