# ShopRenter Payment API Documentation

## Overview

The ShopRenter Payment API is a comprehensive toolkit that enables developers to integrate card payment processing into their applications. The API provides capabilities for both one-time and recurring payments, with built-in support for automatic invoicing and financial tracking.

## Key Features

### Payment Capabilities
- **One-time card payments** - Process single transactions
- **Recurring fee payments** - Set up subscription-based billing
- **Automatic invoicing** - Generate invoices without manual intervention
- **Financial statistics** - Track income and payment analytics
- **Payment plan creation** - Configure recurring charge schedules

## Payment Types

### One-Time Payments
Single transaction processing for immediate charges against customer payment methods.

### Recurring Payments
Subscription-based billing model that automatically charges customers according to predefined payment plans:
- Configurable billing cycles
- Automatic retry on failed payments
- Customer notification system
- Plan modification support

## Integration Features

### Invoicing
- Automatic invoice generation upon successful payment
- VAT calculation and compliance
- Billing data management
- Financial record keeping

### Webhooks & Notifications
The API supports webhook notifications for:
- Payment success/failure events
- Subscription lifecycle events
- Invoice generation
- Payment method updates

### Transaction Management
- Bank card information updates
- Payment status tracking
- Transaction history access
- Refund processing capabilities

## Application Lifecycle

The Payment API documentation covers the complete application lifecycle including:
1. Setup and configuration
2. Integration implementation
3. Testing and validation
4. Production deployment
5. Monitoring and maintenance
6. Application deletion procedures

## Financial Operations

### Billing Data
- Customer billing information management
- Multiple currency support
- VAT rate configuration
- Pricing structure setup

### Payment Plans
Create and manage recurring payment schedules with:
- Flexible billing frequencies
- Trial period support
- Grace period configuration
- Automatic renewal options

## Security & Compliance

The API is designed to handle sensitive financial data with appropriate security measures and compliance standards for processing card payments within the ShopRenter platform.

## Documentation Structure

The complete Payment API documentation is organized into sequential sections:
1. Introduction and overview
2. Setup requirements and prerequisites
3. API basics and fundamentals
4. Payment implementation guides
5. Subscription management
6. Webhook configuration
7. Testing procedures
8. Production best practices

## Getting Started

To begin using the ShopRenter Payment API:
1. Access the developer portal at `https://doc.shoprenter.hu/paymentapi/`
2. Review setup and configuration requirements
3. Obtain necessary API credentials
4. Follow integration guides for your use case
5. Test in sandbox environment
6. Deploy to production

## Additional Resources

- Full API documentation: `https://doc.shoprenter.hu/paymentapi/docs/a_introduce.html`
- Developer GitHub repository (referenced in documentation)
- Support and technical assistance through ShopRenter developer portal

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*Note: This documentation provides a high-level overview. For detailed API specifications, authentication methods, endpoint definitions, and code examples, refer to the complete Payment API documentation on the ShopRenter developer portal.*
