Getting Started

Overview

Wagmi is a collection of Vue composition utilities for Ethereum. You can learn more about the rationale behind the project in the Why Wagmi section.

Automatic Installation

For new projects, it is recommended to set up your Wagmi app using the create-wagmi command line interface (CLI). This will create a new Wagmi project using TypeScript and install the required dependencies.

pnpm

pnpm create wagmi

npm

npm create wagmi@latest

yarn

yarn create wagmi

bun

bun create wagmi

Once the command runs, you'll see some prompts to complete.

Project name: wagmi-project
Select a framework: Vue / Vanilla
...

After the prompts, create-wagmi will create a directory with your project name and install the required dependencies. Check out the README.md for further instructions (if required).

Manual Installation

To manually add Wagmi to your project, install the required packages.

pnpm

pnpm add @wagmi/vue viem@2.x @tanstack/vue-query

npm

npm install @wagmi/vue viem@2.x @tanstack/vue-query

yarn

yarn add @wagmi/vue viem@2.x @tanstack/vue-query

bun

bun add @wagmi/vue viem@2.x @tanstack/vue-query

• Viem is a TypeScript interface for Ethereum that performs blockchain operations.
• TanStack Query is an async state manager that handles requests, caching, and more.
• TypeScript is optional, but highly recommended. Learn more about TypeScript support.

Create Config

Create and export a new Wagmi config using createConfig.

config.ts

import { http, createConfig } from '@wagmi/vue'
import { mainnet, sepolia } from '@wagmi/vue/chains'

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

In this example, Wagmi is configured to use the Mainnet and Sepolia chains, and injected connector. Check out the createConfig docs for more configuration options.

TypeScript Tip

If you are using TypeScript, you can "register" the Wagmi config or use the hook config property to get strong type-safety in places that wouldn't normally have type info.

register config

import { useBlockNumber } from '@wagmi/vue'

useBlockNumber({ chainId: 123 })
Type '123' is not assignable to type 'DeepMaybeRef<1 | 11155111 | undefined>'.

declare module '@wagmi/vue' {
  interface Register {
    config: typeof config
  }
}

hook config property

import { useBlockNumber } from '@wagmi/vue'

useBlockNumber({ chainId: 123, config })
Type '123' is not assignable to type 'DeepMaybeRef<1 | 11155111 | undefined>'.

By registering or using the hook config property, useBlockNumber's chainId is strongly typed to only allow Mainnet and Sepolia IDs. Learn more by reading the TypeScript docs.

Add Plugin to App

App the WagmiPlugin to your app instance and pass the config you created earlier to the plugin options.

main.ts

import { WagmiPlugin } from '@wagmi/vue'
import { createApp } from 'vue'
import { config } from './config'
import App from './App.vue'

createApp(App)
  .use(WagmiPlugin, { config })
  .mount('#app')

App.vue

<template>
</template>

config.ts

import { http, createConfig } from '@wagmi/vue'
import { mainnet, sepolia } from '@wagmi/vue/chains'

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

Check out the WagmiPlugin docs to learn more about the plugin API.

Setup TanStack Query

After the WagmiPlugin, attach the VueQueryPlugin to your app, and pass a new QueryClient instance to the queryClient property.

main.ts

import { QueryClient, VueQueryPlugin } from '@tanstack/vue-query'
import { WagmiPlugin } from '@wagmi/vue'
import { createApp } from 'vue'
import { config } from './config'
import App from './App.vue'

const queryClient = new QueryClient()

createApp(App)
  .use(WagmiPlugin, { config })
  .use(VueQueryPlugin, { queryClient })
  .mount('#app')

App.vue

<template>
</template>

config.ts

import { http, createConfig } from '@wagmi/vue'
import { mainnet, sepolia } from '@wagmi/vue/chains'

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

Check out the TanStack Query docs to learn about the library, APIs, and more.

Use Wagmi

Now that everything is set up, every component inside your app can use Wagmi Vue Composables.

App.vue

<script setup lang="ts">
import { useAccount, useEnsName } from '@wagmi/vue'

const { address } = useAccount()
const { data, error, status } = useEnsName({ address })
</script>

<template>
  <div v-if="status === 'pending'">Loading ENS name</div>
  <div v-else-if="status === 'error'">
    Error fetching ENS name: {{error.message}}
  </div>
  <div v-else>ENS name: {{data}}</div>
</template>

main.ts

import { QueryClient, VueQueryPlugin } from '@tanstack/vue-query'
import { WagmiPlugin } from '@wagmi/vue'
import { createApp } from 'vue'
import { config } from './config'
import App from './App.vue'

const queryClient = new QueryClient()

createApp(App)
  .use(WagmiPlugin, { config })
  .use(VueQueryPlugin, { queryClient })
  .mount('#app')

config.ts

import { http, createConfig } from '@wagmi/vue'
import { mainnet, sepolia } from '@wagmi/vue/chains'

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

Next Steps

For more information on what to do next, check out the following topics.

• TypeScript Learn how to get the most out of Wagmi's type-safety and inference for an enlightened developer experience.
• Connect Wallet Learn how to enable wallets to connect to and disconnect from your apps and display information about connected accounts.
• Vue Composables Browse the collection of Vue Composables and learn how to use them.
• Viem Learn about Viem and how it works with Wagmi.