A SwiftUI app demonstrating gasless smart account transactions using ZeroDev Omni SDK for ERC-4337 account abstraction and Privy for authentication + embedded wallet signing.

Works on both macOS and iOS.

1. Login — User authenticates via email OTP (Privy)
2. Embedded wallet — Privy creates a secure embedded Ethereum wallet
3. Smart account — ZeroDev creates a Kernel v3.3 smart account with the Privy wallet as owner
4. Gas sponsorship — ZeroDev's paymaster sponsors all gas fees (user pays nothing)
5. Send transaction — Gasless UserOp from the smart account, confirmed on Sepolia

┌──────────────┐     ┌─────────────────────┐     ┌───────────────────┐
│  Privy SDK   │────>│  PrivySigner        │────>│  ZeroDev Omni SDK │
│  (auth +     │     │  (AsyncSignerProto  │     │  (Kernel v3.3 +   │
│   embedded   │     │   bridges EIP-1193  │     │   paymaster +     │
│   wallet)    │     │   to ZeroDev)       │     │   URLSession)     │
└──────────────┘     └─────────────────────┘     └───────────────────┘

Key integration points:

• AsyncSignerProtocol — Privy's async wallet provider maps directly to ZeroDev's async signer interface. No semaphores, no deadlocks.
• useURLSessionTransport() — Routes all SDK HTTP through Apple's URLSession instead of Zig's TLS client. Required on iOS, optional on macOS.

1. Copy the env file and fill in your credentials:

   cp .env.example .env

   ZERODEV_PROJECT_ID=...   # from dashboard.zerodev.app
   PRIVY_APP_ID=...         # from dashboard.privy.io
   PRIVY_CLIENT_ID=...      # from dashboard.privy.io (starts with "client-")
   

2. Run:

   make run       # macOS
   make run-ios   # iOS Simulator (boots iPhone 17 Pro by default)

   Use a different simulator with: make run-ios SIMULATOR="iPhone 17e"

That's it. No Zig, no local SDK builds — the ZeroDev Omni SDK is pulled as a pre-built xcframework via SPM.

Sources/
├── GasSponsorshipApp.swift   # @main entry, Privy SDK init
├── Config.swift              # Reads credentials from environment / .env
├── PrivySigner.swift         # AsyncSignerProtocol: Privy wallet → ZeroDev signer
├── WalletManager.swift       # Auth → wallet → smart account state machine
├── RootView.swift            # Navigation router based on auth state
├── LoginView.swift           # Email input screen
├── OTPView.swift             # OTP verification screen
└── DashboardView.swift       # Wallet dashboard + send transaction

Both pulled automatically via Swift Package Manager:

• zerodev-omni-sdk v0.0.1-alpha.2 — ERC-4337 smart account SDK (pre-built xcframework)
• privy-ios v2.10.0 — Auth + embedded wallets