Invoice

Overview

Invoices are statements of what a customer owes. The Open API lets an authenticated customer pay a standalone invoice.

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How It Works

1. Pay an invoice — charge an existing card (source_id) or a new card token against an open invoice.

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API Endpoints

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Important Behaviors

• Requires an authenticated customer (Bearer JWT).
• The invoice must belong to the customer and not be paid, void, or uncollectible.
• Pay with an existing source_id or a new payment_gateway + gateway_token; when 3D Secure is required the response returns a payment_intent to complete.