Quick Start

Get started with @sei-js/create-sei in minutes

Installation

You don’t need to install @sei-js/create-sei globally. Use it directly with npx or pnpm:

npx

npx @sei-js/create-sei app

Interactive Setup

The CLI provides an interactive wizard to guide you through project setup:

1. Run the CLI

   Execute the create-sei command with your project name:

   npx @sei-js/create-sei app -n my-sei-app
   

2. Choose Framework

   Select your preferred frontend framework:

   • Next.js - Full-stack React framework with SSR/SSG
   • Vite - Fast build tool with React
3. Select Ecosystem

   Choose your blockchain integration:

   • EVM - Ethereum-compatible development (recommended)
   • Cosmos - Native Cosmos SDK (deprecated per SIP-3)
4. Pick Library (EVM only)

   For EVM ecosystem, choose your wallet library:

   • Wagmi - Type-safe React hooks for Ethereum
   • Ethers.js - Traditional Ethereum library
5. Project Setup

   The CLI automatically configures:

   • TypeScript configuration
   • Tailwind CSS styling
   • ESLint configuration
   • Prettier formatting
   • Git initialization

Manual CLI Usage

Skip the interactive setup by specifying all options directly:

Next.js + Wagmi

npx @sei-js/create-sei app -n my-app -f next -e evm -l wagmi

CLI Options

Flag	Long Form	Description	Options
-n	--name	Project name (must be valid package name)	Any valid npm package name
-f	--framework	Frontend framework	vite, next
-e	--ecosystem	Blockchain ecosystem	evm, cosmos
-l	--library	EVM library (EVM ecosystem only)	wagmi

Template Combinations: The CLI creates different project templates based on your flag combinations. See all available combinations on the Templates page.

What Happens Next

After running the CLI, you’ll have a fully configured Sei dApp ready for development:

• Project Structure Created - Organized file structure with components, hooks, and utilities properly scaffolded for your chosen framework and ecosystem.

• Wallet Integration Ready - Pre-configured wallet connections for your chosen ecosystem (Wagmi/Ethers.js for EVM, CosmJS for Cosmos) with connection hooks ready to use.

• Development Tools Configured - TypeScript, ESLint, Prettier, and Tailwind CSS automatically configured with sensible defaults and ready for immediate development.

• Sei Network Integration - Built-in Sei network configuration and contract interaction examples to help you start building on Sei right away.