unichain-wallet-kit

Unified Multi-Chain Wallet SDK - EVM + Solana + TON + Aptos + Sui + AI Agent + Passkeys

Features

Multi-Chain Support

• ✅ EVM - Ethereum, Base, Arbitrum, Polygon, Optimism, Avalanche, BSC
• ✅ Solana - Phantom, Solflare, Slope
• ✅ TON - Tonkeeper, TON Wallet
• ✅ Aptos - Petra Wallet
• ✅ Sui - Sui Wallet, Suiet

AI Agent

• ✅ Agent Wallet - Programmable wallets for AI agents
• ✅ Policy System - Spending limits and allowances
• ✅ x402 Payments - Micropayment protocol for AI agents
• ✅ ERC-4337 Paymaster - Gasless transactions
• ✅ LangChain Tools - Blockchain actions for AI agents

Security

• ✅ Passkeys/WebAuthn - Passwordless authentication
• ✅ Lit Protocol - Decentralized key management (MPC)
• ✅ Session Keys - Temporary signing permissions

Developer Experience

• ✅ Unified API - One hook for all chains
• ✅ SSR Safe - Next.js compatible
• ✅ Auto Reconnect - Remembers last connection
• ✅ UI Components - Ready-to-use buttons and selectors
• ✅ TypeScript - Full type definitions

Data & Infrastructure

• ✅ The Graph - Blockchain data indexing
• ✅ Push Protocol - Web3 notifications
• ✅ ENS - Ethereum Name Service

Installation

npm install unichain-wallet-kit

Quick Start

1. Wrap with Provider

import { WalletProvider } from 'unichain-wallet-kit'

export default function App() {
  return (
    <WalletProvider autoConnect={true}>
      <YourApp />
    </WalletProvider>
  )
}

2. Use Hook

import { useWallet, ConnectButton } from 'unichain-wallet-kit'

function MyComponent() {
  const { state, connect, disconnect, signMessage, sendTransaction } = useWallet()
  
  if (!state.isConnected) {
    return <ConnectButton />
  }
  
  return (
    <div>
      <p>Address: {state.address}</p>
      <button onClick={disconnect}>Disconnect</button>
    </div>
  )
}

API Reference

Core

Component	Description
WalletProvider	Main provider for wallet connection
useWallet()	Hook to access wallet state and actions
ConnectButton	Ready-to-use connect button
ChainSelector	Chain selector component

Chain Modules

Module	Chain	Usage
EvmProvider	EVM Chains	import { EvmProvider, useEvmWallet } from 'unichain-wallet-kit'
SolanaProvider	Solana	import { SolanaProvider, useSolanaWallet } from 'unichain-wallet-kit'
TonProvider	TON	import { TonProvider, useTonWallet } from 'unichain-wallet-kit'
AptosProvider	Aptos	import { AptosProvider, useAptosWallet } from 'unichain-wallet-kit'
SuiProvider	Sui	import { SuiProvider, useSuiWallet } from 'unichain-wallet-kit'

AI Agent

import { AgentWalletProvider, useAgentWallet, createDefaultPolicy } from 'unichain-wallet-kit'

// Create policy
const policy = createDefaultPolicy('10', '1000') // $10/transaction, $1000/day

// Initialize agent wallet
await initialize({
  agentId: 'my-ai-agent',
  chain: 'evm',
  policy,
})

// Agent can execute transactions
await transfer('0x123...', '10', 'USDC')

Passkeys

import { PasskeyProvider, usePasskeys } from 'unichain-wallet-kit'

// Register
await register('username')

// Authenticate
await authenticate()

ERC-4337 Paymaster

import { PaymasterProvider, usePaymaster, createPaymasterConfig } from 'unichain-wallet-kit'

// Gasless transaction
await sendUserOperation({
  to: '0x...',
  value: '0.01',
})

x402 Payments

import { X402Provider, useX402 } from 'unichain-wallet-kit'

// AI agent paying for API access
const response = await x402Client.fetchWithPayment('https://api.example.com/data')

Supported Chains

Chain	Status
Ethereum	✅
Base	✅
Arbitrum	✅
Optimism	✅
Polygon	✅
Avalanche	✅
BSC	✅
Solana	✅
TON	✅
Aptos	✅
Sui	✅

Comparison

Feature	Openfort	Coinbase	0xGasless	unichain-wallet-kit
EVM	✅	✅	✅	✅
Solana	⚠️	❌	❌	✅
TON	❌	❌	❌	✅
Aptos/Sui	❌	❌	❌	✅
Passkeys	⚠️	✅	❌	✅
x402	❌	✅	✅	✅
AI Agent	⚠️	✅	✅	✅
Price	$99/mo	Paid	Paid	Free

Architecture

unichain-wallet-kit
├── src/
│   ├── core/           # Core types & provider
│   ├── evm/           # EVM (wagmi)
│   ├── solana/        # Solana (wallet-adapter)
│   ├── ton/           # TON (TonConnect)
│   ├── aptos/         # Aptos
│   ├── sui/           # Sui
│   ├── agent/         # AI Agent + x402
│   ├── passkeys/      # WebAuthn
│   ├── paymaster/     # ERC-4337
│   ├── lit/           # Lit Protocol (MPC)
│   ├── graph/         # The Graph
│   ├── push/          # Push Protocol
│   ├── identity/      # ENS
│   ├── defi/          # DeFi integrations
│   └── ui/            # UI components
└── examples/          # Usage examples

Contributing

Contributions are welcome! Please read our contributing guide first.

License

MIT License - see LICENSE for details.

Keywords

wallet ethereum solana ton apts sui web3 crypto react 
passkeys webauthn erc4337 account-abstraction 
embedded-wallet ai-agent x402 lit-protocol 
thegraph defi uniswap aave