Autlantic

Autlantic Billing — Flutter

USDC payments on Base
Official mobile Checkout presenter. Opens hosted checkout URLs — no API keys in the app.

Docs MIT License Autlantic

Why this SDK

Checkout presenter only (autlantic_checkout). Your backend creates the session; this plugin opens the hosted checkoutUrl. iOS: ASWebAuthenticationSession · Android: Chrome Custom Tabs. Never embed abk_* keys or webhook secrets in the app. Do not lock checkout in a WebView — WalletConnect needs to hand off to wallet apps.

Install

Until pub.dev:

dependencies:
  autlantic_checkout:
    git:
      url: https://github.com/Autlantic/payments-sdk.git
      path: sdks/flutter
      ref: sdks/flutter/v0.1.0

Or a local path to sdks/flutter.

Quick start

import 'package:autlantic_checkout/autlantic_checkout.dart';

final result = await AutlanticCheckout.present(
  checkoutUrl, // from YOUR backend
  returnUrlScheme: 'myapp',
);

switch (result.status) {
  case AutlanticCheckoutStatus.completed:
    // iOS: optional result.callbackUrl
    // Android: Custom Tabs opened; handle deep links, then poll YOUR backend
    break;
  case AutlanticCheckoutStatus.canceled:
    break;
  case AutlanticCheckoutStatus.failed:
    // result.message
    break;
}

Backend contract

  1. Your server creates a session (Node / Python / Go / PHP / Java / .NET) with successUrl / cancelUrl like myapp://billing/success.
  2. App calls present with the returned checkoutUrl.
  3. After return, poll your access API. Unlock only after a verified webhook on the server.

Sample merchant backend: examples/mobile-checkout (pnpm example:mobile).

Documentation
Flutter Checkout API reference
Mobile apps Mobile integration guide
iOS · Android Native Checkout
Languages All SDK surfaces
Security Secrets & threat model

Develop

cd sdks/flutter
flutter analyze

Maintainer publish: flutter pub publish (see ../PUBLISHING.md).

License

MIT · Operated by Autlantic Limited (UK company no. 17422039).

Part of Autlantic Payments SDK.

Libraries

autlantic_checkout