New: one-tap testnet accounts with passkeys

Build on Sui, right from your browser

Guides, working snippets and a playground for Move contracts and TypeScript apps on the Sui blockchain.

Open the playground Start with the CLI

Why Sui

Sui’s object model lets independent transactions run in parallel, which shapes how you design contracts and apps.

Objects, not accounts

State lives in typed objects with owners. Transactions touching different objects never contend.

Parallel by default

Owned-object transactions skip consensus; Mysticeti handles shared state with sub-second finality.

Programmable transactions

Chain up to 1,024 Move calls in one atomic transaction, composed client-side.

Passkeys and zkLogin

Users sign with Face ID or a Google login. No seed phrases, no extension.

Quickstart

From zero to a published package in four steps.

1Install the Sui CLI
Terminal
brew install sui

2Create an address on testnet

Terminal

sui client new-env --alias testnet --rpc https://fullnode.testnet.sui.io:443
sui client switch --env testnet
sui client new-address ed25519

Need test SUI? Import the key into the playground and fund it there.

3Write and test a Move package

Terminal

sui move new hello
cd hello
sui move test

sources/counter.move

module hello::counter;

public struct Counter has key {
    id: UID,
    value: u64,
}

public fun create(ctx: &mut TxContext) {
    transfer::share_object(Counter {
        id: object::new(ctx),
        value: 0,
    })
}

public fun increment(c: &mut Counter) {
    c.value = c.value + 1;
}

4Publish and call it

Terminal

sui client publish

app.ts

import { SuiGrpcClient } from '@mysten/sui/grpc'
import { Transaction } from '@mysten/sui/transactions'

const client = new SuiGrpcClient({
  network: 'testnet',
  baseUrl: 'https://fullnode.testnet.sui.io:443',
})

const tx = new Transaction()
tx.moveCall({
  target: `${PACKAGE_ID}::counter::increment`,
  arguments: [tx.object(COUNTER_ID)],
})

await client.signAndExecuteTransaction({ signer, transaction: tx })