Templates

Action required: IBC assets on Sei will become inaccessible If you hold USDC.n (USDC via Noble), USDT.kava (Kava USDT), Wormhole-bridged tokens, or any other IBC asset on Sei, you must swap, migrate, or bridge out before the governance proposal to disable inbound/outbound IBC transfers passes and is activated to avoid permanent loss of access. After this, Sei will no longer support IBC bridging of assets from Cosmos-based chains to and from Sei Network. Consult the SIP-03 Migration Guide for the full list of affected assets, required actions, and supported routes. For USDC.n specifically, see: Holders of USDC.n Need to Swap or Migrate.

Learn

EVM

Cosmos-SDK

Nodes

Start a new Sei dApp from a working, production-ready template instead of a blank folder. The @sei-js/create-sei CLI scaffolds a fully wired project — wallet connections, contract interactions, TypeScript, and styling — in seconds.

Scaffold in one command

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

pnpm create @sei-js/sei app --name my-sei-app

Then install and run:

cd my-sei-app
npm install
npm run dev

Next.js + wagmi

The default starter — a production-ready Next.js 15 app (React 19) with type-safe wallet connections and contract reads/writes.Stack: Next.js 15 · React 19 · wagmi v2 · viem · RainbowKit · TanStack Query · Tailwind CSS v4 · Mantine UI · Biome · TypeScriptIncludes: RainbowKit wallet connection (MetaMask / WalletConnect / Coinbase Wallet), organized components/hooks/utilities, and Sei network config.

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

Precompiles extension

The default template plus working examples that query Sei’s native precompiles — Bank, Staking, and Governance — directly from the frontend.Adds: native token supply, staking info, and governance proposal reads via @sei-js/precompiles.

npx @sei-js/create-sei app --name my-app --extension precompiles

See every available extension with npx @sei-js/create-sei list-extensions. Full CLI options and the interactive setup flow are documented on the Scaffold Sei page.

What every template gives you

Wallet integration

Pre-configured wallet connections and React hooks — connect, read balances, and send transactions without boilerplate.

Sei network config

Mainnet (pacific-1, 1329) and testnet (atlantic-2, 1328) wired up, with contract-interaction examples.

Type safety

End-to-end TypeScript with wagmi + viem, so contract calls and ABIs are typed.

Tooling

Tailwind CSS, Mantine UI, Biome formatting, and Git initialized — ready to build on.

Prerequisites: Node.js v18 or higher (node --version to check).

More templates are coming

This gallery grows as new starters ship. Building a template the ecosystem should know about — a DeFi starter, an NFT mint, an x402-payments app, or an AI agent? Contribute it to sei-protocol/sei-js and it can be listed here.

Next steps

Scaffold Sei (CLI reference)

Full create-sei options, extensions, and troubleshooting.

Build a frontend

Wire wagmi + viem and a wallet into a Sei dApp from first principles.

Scaffold Sei @sei-js/ledger

⌘I

Overview

Essentials

seid CLI

Frontend Development

Smart Contracts

sei-js Library

Videos

Ecosystem Tutorials

Reference

Hardware Wallets

Templates

Scaffold in one command

Templates

Next.js + wagmi

Precompiles extension

What every template gives you

Wallet integration

Sei network config

Type safety

Tooling

More templates are coming

Next steps

Scaffold Sei (CLI reference)

Build a frontend

​Scaffold in one command

​Templates

Next.js + wagmi

Precompiles extension

​What every template gives you

Wallet integration

Sei network config

Type safety

Tooling

​More templates are coming

​Next steps

Scaffold Sei (CLI reference)

Build a frontend

Scaffold in one command

Templates

What every template gives you

More templates are coming

Next steps