RainbowKit — Beautiful Wallet Connection for React dApps

Introduction

RainbowKit is a React library by Rainbow that provides a ready-made, accessible wallet connection modal for Ethereum-based applications. It handles the complexity of supporting multiple wallet providers, chain switching, and account display so developers can add Web3 connectivity to their React app with a single component.

What RainbowKit Does

• Renders a customizable connect-wallet modal supporting MetaMask, WalletConnect, Coinbase Wallet, and many others
• Manages wallet connection state including account address, balance, and ENS name resolution
• Handles multi-chain switching with a built-in chain selector component
• Provides theming with light, dark, and midnight presets plus full custom theme support
• Integrates tightly with wagmi and viem for type-safe contract interaction after connection

Architecture Overview

RainbowKit sits on top of wagmi (React hooks for Ethereum) and viem (TypeScript Ethereum client). The RainbowKitProvider wraps your app and injects connection state. The ConnectButton component triggers a modal that discovers available wallets, groups them by install status, and guides users through connection. Once connected, wagmi hooks provide access to the signer and chain data. The library is purely frontend with no backend dependencies.

Self-Hosting & Configuration

• Install with npm install @rainbow-me/rainbowkit wagmi viem @tanstack/react-query
• Wrap your app in WagmiProvider, QueryClientProvider, and RainbowKitProvider
• Obtain a free WalletConnect projectId from cloud.walletconnect.com for mobile wallet support
• Configure supported chains by passing chain objects to the wagmi config
• Customize the wallet list to show only the wallets you want to support

Key Features

• Drop-in ConnectButton component with address truncation, avatar, and balance display
• Automatic ENS name and avatar resolution for connected accounts
• Responsive modal design that works across desktop and mobile browsers
• Custom wallet list configuration to prioritize specific wallets for your user base
• Authentication adapter for adding sign-in-with-Ethereum flows

Comparison with Similar Tools

• ConnectKit by Family offers a similar modal experience with a different design philosophy and animation style
• Web3Modal by WalletConnect is framework-agnostic; RainbowKit is React-specific with deeper integration
• Dynamic provides a managed wallet connection service; RainbowKit is fully open source and self-contained
• thirdweb ConnectButton bundles embedded wallets and managed infra; RainbowKit focuses purely on wallet UI
• wagmi alone provides hooks but no UI; RainbowKit adds the visual connection layer

FAQ

Q: Does RainbowKit work with Next.js? A: Yes. RainbowKit works with Next.js including the App Router. The library provides documentation for server-side rendering setup.

Q: Can I customize the appearance to match my brand? A: Yes. RainbowKit supports custom themes with control over colors, border radius, font stack, and overlay blur.

Q: Which wallets are supported? A: RainbowKit supports MetaMask, WalletConnect (which covers 300+ mobile wallets), Coinbase Wallet, Rainbow, Trust Wallet, Phantom, and many more via configurable wallet connectors.

Q: Is RainbowKit free for commercial use? A: Yes. RainbowKit is MIT-licensed and free for any use.

Sources

• https://github.com/rainbow-me/rainbowkit
• https://rainbowkit.com/docs