w3-kit
01 — OVERVIEW / TOOLKIT

The web3
developer
toolkit, assembled.

Get started

Fifty-plus typed components. Fourteen chains, eighteen tokens, one CLI. Ship your dApp this afternoon, not next quarter.

54
components
14
chains
18
tokens
MIT
license
02 — UI / CATALOG

Fifty-four components.
Each one does one thing, well.

A
B
C
D
01
001
Connect Wallet

Ethereum

Solana

4 wallets supported
ConnectWallet
wallet
002

Swap

1 ETH ≈ 1,917.5 USDC
FromBalance: 1.42
ToBalance: 2,500

1 ETH ≈ 1,917.5 USDC

4 tokens available
TokenSwap
defi
003
Network
Ethereum
5 networks (mainnets)
NetworkSwitcher
chain
004
Balance

Total Value

$11,098.14+1.76%
4 tokens · $11,098.14
WalletBalance
wallet
02
005
Noun #42Nouns

Noun #42

38.2ETH#42

0x1a2B...eF12

Nouns Collection
NFTCard
nft
006

Gas

ETH $3,420

Transaction Type

Estimated Cost21,000 gas
$1.29 ETH$NaN
Base: 10 gweiPriority: 8 gweiTotal: 18 gwei

Ethereum mainnet

GasCalculator
chain
007

Contract

ERC-200xA0b8...eB48

Check Balance

→ uint256

View token balance of any wallet

Wallet to checkWhose balance?

Total Supply

→ uint256

View total USDC in circulation

4 functions2 read · 2 write
ContractInteraction
smart
008

ENS Resolver

Lookup

Try:

Enter a name or address
EnsResolver
identity
03
009

Transactions

  • Sent ETH

    0x8a3f...e4b2

    -0.25 ETH

    1m ago

    success

  • Received USDC

    0xb1c7...9f03

    +1,200 USDC

    4m ago

    success

  • Swap ETH → USDC

    0xf29d...7a11

    0.5 ETH

    10m ago

    pending

  • Contract Call

    0x3e0a...c8d5

    0.01 ETH

    30m ago

    success

4 transactions

TransactionHistory
wallet
010

Staking Pools

3 pools

Props-driven, expandable pool list

Staking
defi
011
Multisig3/3

Signers

A
B
C

Transfer to Treasury

1.5 ETH → 0xdead...beef · 20581d ago

pending
2/3
1 transaction · 3 of 3 required
Multisig
wallet
012

Market

  • BT

    Bitcoin

    BTC·$1.33T

    $67,498.42

    +1.87%
  • ET

    Ethereum

    ETH·$403.2B

    $3,355.18

    +3.12%
  • SO

    Solana

    SOL·$64.8B

    $148.32

    -2.45%
  • AV

    Avalanche

    AVAX·$13.1B

    $35.67

    -0.82%

4 tokens

PriceTicker
market
Showing 12 of 54Browse all components
03 — REGISTRY
Ships with every
chain you care about.
CHAINSEBAOPSABLZ+4 more
TOKENSUUDWWLUAAO+8 more
05 — RECIPES

Build in the time it takes
to brew a coffee.

~5 min01

Connect a wallet

Drop in <ConnectWallet />, done.

$ npx w3-kit add connect-wallet
~8 min02

Show token balances

Multi-chain, typed, with USD conversion.

$ npx w3-kit add wallet-balance
~12 min03

Swap tokens via 1inch

Production-ready aggregator UI.

$ npx w3-kit add token-swap
~15 min04

Mint an NFT

Preview, pay, confirm — three components.

$ npx w3-kit add nft-mint
18
GitHub stars
across the w3-kit org
480
npm downloads / week
across @w3-kit/*
0
components shipped
typed, themed, ready
0
chains supported
EVM + Solana
06 — SHIP IT

Your users don't
care what's under
the hood. ship.

Open source, MIT, no accounts, no keys, no upsells. Install the CLI and render real UI in ninety seconds.

~/my-dapp
$ npx w3-kit init
✓ Installed 54 components
✓ Registry typed & ready
$ npm run dev
▸ Local: http://localhost:3000
Read the docs