How to Build a DeFi Dashboard with Next.js 14

Introduction

DeFi dashboards are one of the most common Web3 applications. They aggregate on-chain data, display portfolio positions, and help users make informed decisions about their assets. Building one well requires careful attention to data freshness, performance, and user experience.

In this guide, we'll build a complete DeFi dashboard using:

• Next.js 14 with App Router
• The Graph for on-chain data indexing
• Wagmi for Ethereum interactions
• React Query for server state management

Setting Up the Project

First, let's set up a new Next.js project with the required dependencies.

npx create-next-app@latest defi-dashboard --typescript --tailwind
cd defi-dashboard
npm install wagmi viem @tanstack/react-query @apollo/client graphql

Configuring Wagmi

Wagmi provides composable hooks for Ethereum. Let's configure it with a provider and client.

import { http, createConfig } from 'wagmi'
import { mainnet, polygon } from 'wagmi/chains'

export const config = createConfig({
  chains: [mainnet, polygon],
  transports: {
    [mainnet.id]: http(),
    [polygon.id]: http(),
  },
})

Fetching Data from The Graph

The Graph provides indexed data from Ethereum. We'll use it to fetch swap events, liquidity positions, and token balances.

Conclusion

Building a production DeFi dashboard requires balancing data freshness, performance, and UX. By using The Graph for indexed data, Wagmi for wallet interactions, and React Query for server state, we can create a responsive, maintainable application.

Working on a DeFi product? We'd love to hear about it.