# anybill Developer Documentation

> anybill is a digital receipt platform for retail merchants. This documentation
> covers the Frontend SDKs (Android, iOS, Flutter, React Native, Web) that
> deliver digital receipts to consumer apps, the Vendor API for point-of-sale
> systems, the Partner Platform API for backend-to-backend integration, and the
> webhook channels that push receipt and loyalty events. This file follows the
> llmstxt.org standard and is intended as the single entry point for AI coding
> agents (Cursor, Claude Code, GitHub Copilot, Codex) integrating anybill.

## Frontend SDKs

- [Overview](https://developer.anybill.de/the_anybill_sdk/overview.md): Entry point for the Frontend SDKs, including the linked-user-account authentication flow.
- [AI-Assisted Integration](https://developer.anybill.de/the_anybill_sdk/ai_assisted_integration.md): How to integrate the SDK with AI coding agents using this documentation and a ready-to-use AGENTS.md.
- [Documentation and Change Log](https://developer.anybill.de/the_anybill_sdk/native_sdks.md): Versioned reference and change log for the native Android and iOS SDKs.
- [Android Integration](https://developer.anybill.de/the_anybill_sdk/android_integration.md): Step-by-step integration guide for the Kotlin Android SDK.
- [iOS Integration](https://developer.anybill.de/the_anybill_sdk/ios_integration.md): Step-by-step integration guide for the Swift iOS SDK.
- [Flutter Integration](https://developer.anybill.de/the_anybill_sdk/flutter_integration.md): Integration guide for the Flutter SDK wrapping the native implementations.
- [React Native Integration](https://developer.anybill.de/the_anybill_sdk/react_native_integration.md): Preview integration guide for the React Native SDK.
- [Web Integration](https://developer.anybill.de/the_anybill_sdk/web_integration.md): Integration guide for the TypeScript Web SDK.

## Vendor API

- [Overview](https://developer.anybill.de/vendor_api/index.md): Getting-started checklist for integrating the Vendor API into a point-of-sale system.
- [API Integration](https://developer.anybill.de/vendor_api/api_vendor.md): Authentication, endpoints, and data model for sending bills to anybill.
- [Customer and Cashier Display](https://developer.anybill.de/vendor_api/customer_display.md): Rendering the QR code on the checkout customer display.
- [Helpful Information](https://developer.anybill.de/vendor_api/helpful.md): Legal requirements and integration-review guidance.

## Vendor API SDK

- [Overview](https://developer.anybill.de/vendor_api_sdk/overview.md): Summary of the C# Vendor API SDK, features and change log.
- [Configuration](https://developer.anybill.de/vendor_api_sdk/configuration.md): Client configuration, authentication, and environment setup.
- [C# Integration](https://developer.anybill.de/vendor_api_sdk/csharp_integration.md): End-to-end integration example for the C# SDK.

## Partner Platform API

- [Overview](https://developer.anybill.de/partner_platform_api/index.md): Introduction to the Partner Platform API and its service-account model.
- [Environments](https://developer.anybill.de/partner_platform_api/environments.md): Available environments and their base URLs.
- [Authentication](https://developer.anybill.de/partner_platform_api/api_authentication.md): Service-account authentication flow for the Partner Platform API.
- [Partner Platform V3](https://developer.anybill.de/partner_platform_api/api_v3.md): Endpoints and use cases for the current API version, including user provisioning and SDK token creation.

## Webhooks

- [Overview](https://developer.anybill.de/webhooks/overview.md): Authentication, headers, and common use cases for anybill webhooks.
- [Receipt Notification](https://developer.anybill.de/webhooks/receipt_notification.md): Payload and delivery semantics for the receipt-created webhook.
- [Loyalty](https://developer.anybill.de/webhooks/loyalty.md): Loyalty event webhook payload and behaviour.

## Security and Data Privacy

- [Security and Data Privacy](https://developer.anybill.de/security_and_data_privacy/index.md): Data-centre location, encryption, access control, and availability guarantees.

## Optional

- [anybill Developer Documentation](https://developer.anybill.de/index.md): anybill is the leading digital receipt platform that enables Data Insigts, Customer Loyalty and Marketing Attribution.
- [Imprint](https://developer.anybill.de/imprint/index.md): Legal imprint for anybill GmbH.
- [AGENTS.md download](https://developer.anybill.de/downloads/anybill-sdk-AGENTS.md): Ready-to-drop-in AGENTS.md file for AI coding agents working on an anybill SDK integration.