The Stripe Invoice Generator function streamlines the entire invoice creation and delivery process through Stripe's API. Perfect for businesses, course providers, and service professionals, this function handles everything from customer creation to invoice delivery in one seamless operation.

Key Features:
• Creates and manages customers in Stripe
• Generates professional invoices with custom line items
• Supports custom memo messages and payment terms
• Automatically sends invoices via email
• Provides invoice URLs and PDF downloads
• Includes comprehensive error handling
• Returns human-readable success messages

The function is designed for non-technical users, requiring only basic information like customer details, amount, and description. It automatically handles currency conversion, data validation, and Stripe API interactions. All sensitive operations are secured through Stripe's API key system.

Ideal for:
• E-commerce businesses
• Online course providers
• Service professionals
• Subscription-based services
• Any business requiring professional invoice generation

The function returns both customer-facing URLs and internal tracking IDs, making it perfect for integration into larger business workflows. Error handling and validation ensure reliable operation, while detailed output variables allow for flexible post-invoice actions in your Voiceflow project.