fastapi-payments 0.1.1

A flexible and extensible payment library for FastAPI

Work in Progress (Not ready for usage)

FastAPI Payments Library

A flexible and extensible payment library for FastAPI applications supporting multiple payment providers and pricing models.

Features

• Multiple Payment Providers: Support for Stripe, PayPal, Adyen, and more
• Flexible Pricing Models:
  • Subscription
  • Usage-based
  • Tiered pricing
  • Per-user/seat pricing
  • Freemium
  • Dynamic pricing
  • Hybrid models
• Asynchronous Architecture: Built on FastAPI and SQLAlchemy 2.0 with async support
• Event-Driven: RabbitMQ integration via FastStream for reliable payment event messaging
• Highly Configurable: Extensive configuration options to customize for your needs
• Extensible: Easy to add new payment providers or custom pricing models

Installation

pip install fastapi-payments

Quick Start

from fastapi import FastAPI
from fastapi_payments import FastAPIPayments, create_payment_module
import json

# Create FastAPI app
app = FastAPI()

# Load payment configuration
with open("config/payment_config.json") as f:
    config = json.load(f)

# Initialize payments module
payments = FastAPIPayments(config)

# Include payment routes
payments.include_router(app, prefix="/api")

# Start server
if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8000)

Configuration

Create a payment_config.json file:

{
  "providers": {
    "stripe": {
      "api_key": "sk_test_your_stripe_key",
      "webhook_secret": "whsec_your_webhook_secret",
      "sandbox_mode": true
    }
  },
  "database": {
    "url": "postgresql+asyncpg://user:password@localhost/payments"
  },
  "rabbitmq": {
    "url": "amqp://guest:guest@localhost/"
  },
  "pricing": {
    "default_currency": "USD",
    "default_pricing_model": "subscription"
  },
  "default_provider": "stripe"
}

Documentation

For complete documentation, visit https://fastapi-payments.readthedocs.io/

License

MIT