Credit Note API

Issue credit notes against finalized invoices

Model adjustments and refunds as first-class documents with source-document references, reasons, lifecycle controls, rendering, and delivery.

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POST /api/v1/documents/render

{
  "document_type": "credit_note",
  "template": {
    "id": "tpl_modern"
  },
  "data": {
    "invoice_number": "CN-2026-001",
    "issue_date": "2026-09-16",
    "currency": "USD",
    "seller": {
      "name": "Acme Inc."
    },
    "buyer": {
      "name": "Northstar LLC"
    },
    "line_items": [
      {
        "name": "API integration",
        "quantity": "1",
        "unit_price": "1200.00"
      }
    ]
  },
  "output": {
    "format": "pdf",
    "delivery": "url"
  }
}

Structured data in

Use a document-aware schema instead of assembling HTML or manipulating a PDF library.

Professional PDF out

Apply templates and branding through the same rendering infrastructure used by every supported document type.

Grow into lifecycle APIs

Move from stateless rendering to managed documents, delivery, webhooks, files, payments and audit history when your product needs them.

One integration for the whole document set.

Invoices, proformas, credit notes, quotes, receipts, purchase orders and delivery notes use one API surface.

Start with 100 free renders