payrogen_sdk 0.3.2

Non-custodial payment gateway SDK for Flutter. Wallet creation, split payments, escrow, card payments (Apple Pay, Google Pay), and crypto checkout.

PayRogen SDK for Flutter

Non-custodial, instant-settlement payment gateway SDK for Flutter applications. Accept crypto and card payments with a single method call.

Features

• Drop-in Checkout UI — payrogen.checkout() shows a polished payment sheet (zero custom UI needed)
• Theme-aware — Automatically adapts to your app's light/dark theme
• Pay with Crypto — Wallet address display with copy button and QR support
• Pay with Card — Visa, Mastercard, Apple Pay, Google Pay
• Escrow Payments — Lock funds until delivery confirmation with auto-release timeout
• Split Payments — On-chain atomic fee splitting (e.g., 90% seller, 10% platform)
• Non-custodial Wallets — Users own their private keys with full export capability
• Multi-chain — Solana, Ethereum, Polygon, Arbitrum, Base, Bitcoin
• Sandbox + Live — Solana Devnet for testing, Mainnet for production

Installation

dependencies:
  payrogen_sdk: ^0.3.2

Quick Start — Drop-in Checkout (Recommended)

The fastest way to accept payments. Five lines of code, zero UI work:

import 'package:payrogen_sdk/payrogen_sdk.dart';

// Initialize once
final payrogen = await PayRogen.init(apiKey: 'ck_live_...');

// When user taps "Checkout":
final result = await payrogen.checkout(
  context: context,
  amount: 20.00,
  currency: 'USDC',
  merchantName: 'InstaFoody',
  description: 'Gluten-free Vegan Pizza Recipe',
  recipientAddress: 'seller_wallet_address',
  splits: {
    'seller_address': 9000,   // 90% to seller
    'platform_address': 1000, // 10% platform fee
  },
);

if (result.success) {
  print('Paid! Signature: ${result.signature}');
} else if (result.cancelled) {
  print('User cancelled');
}

Escrow Payments

For marketplace transactions that need delivery confirmation:

final result = await payrogen.checkout(
  context: context,
  amount: 50.00,
  currency: 'USDC',
  recipientAddress: 'chef_wallet',
  escrow: true,
  escrowTimeout: Duration(days: 7),
  splits: {'chef': 8500, 'platform': 1500},
);

// Later, when buyer confirms delivery:
await payrogen.releaseEscrow(escrowId: result.escrowId!);

// Or dispute:
await payrogen.disputeEscrow(escrowId: result.escrowId!, reason: 'Not delivered');

Checkout Result

class PayRogenCheckoutResult {
  final bool success;
  final bool cancelled;
  final String? signature;      // Solana transaction signature
  final String? escrowId;       // Only if escrow: true
  final String? walletAddress;  // Payer's wallet
  final double amount;
  final String currency;
  final Map<String, dynamic>? metadata;
}

Direct API Usage

For advanced use cases where you need full control:

// Create a wallet
final wallet = await payrogen.createWallet(userId: 'user_123');

// Direct payment
final payment = await payrogen.payDirect(
  amount: 100.0,
  currency: 'USDT',
  from: wallet.publicAddress,
  to: 'recipient_address',
  splits: {'seller': 9000, 'platform': 1000},
);

// Escrow payment
final escrow = await payrogen.payEscrow(
  amount: 200.0,
  currency: 'USDC',
  payer: buyerAddress,
  serviceProvider: sellerAddress,
  platform: platformAddress,
  splits: {'seller': 8500, 'platform': 1500},
);

// Wallet recovery
final recovery = await payrogen.recoverWallet(
  userId: 'user_123',
  phrase: 'recovery phrase here',
);

Customization

await payrogen.checkout(
  context: context,
  amount: 25.00,
  currency: 'USDC',
  recipientAddress: 'wallet_address',
  accentColor: Colors.purple, // Custom brand color
  metadata: {'order_id': '123', 'item': 'pizza'},
);

Environment

Environment	Network	Base URL
PayRogenEnvironment.sandbox	Solana Devnet	sandbox-api.payrogen.com
PayRogenEnvironment.live	Solana Mainnet	api.payrogen.com

Error Handling

try {
  final result = await payrogen.checkout(...);
} on PayRogenValidationException catch (e) {
  print('Validation error: ${e.message}');
} on PayRogenAuthException {
  print('Invalid API key');
} on PayRogenNetworkException {
  print('Gateway unreachable');
} on PayRogenRateLimitException catch (e) {
  print('Rate limited. Retry after: ${e.retryAfter}');
}

Platform Support

Platform	Supported
Android	✅
iOS	✅
Web	✅
macOS	✅
Windows	✅
Linux	✅

Additional Information

• Documentation
• API Reference
• Issues