Get invoice

GET

/v1/invoices/{id}

Returns a single invoice with full details including line items and payment status (outstanding balance, overdue status).

Requires one ofinvoices:read read:ledger

Path parameters

idstring (uuid)Required
Invoice ID

Errors

401Invalid or missing authentication
403Missing scope, or the company is archived
404The resource does not exist in this company
429Rate limit exceeded
500Internal Server Error

Every error has the same shape. See Errors.

cURL

curl https://api.numina.app/v1/invoices/550e8400-e29b-41d4-a716-446655440000 \
  -H "Authorization: Bearer numi_YOUR_API_KEY"

JavaScript

const response = await fetch("https://api.numina.app/v1/invoices/550e8400-e29b-41d4-a716-446655440000", {
  method: "GET",
  headers: {
    Authorization: `Bearer ${process.env.NUMINA_API_KEY}`,
  },
});

const data = await response.json();

Python

import os

import requests

response = requests.get(
    "https://api.numina.app/v1/invoices/550e8400-e29b-41d4-a716-446655440000",
    headers={
        "Authorization": f"Bearer {os.environ['NUMINA_API_KEY']}",
    },
)
data = response.json()

Response

200

{
  "id": "550e8400-e29b-41d4-a716-446655440000",
  "invoice_number": 1001,
  "type": "invoice",
  "credited_invoice_id": "550e8400-e29b-41d4-a716-446655440000",
  "status": "sent",
  "issue_date": "2026-01-15",
  "due_date": "2026-02-15",
  "contact_id": "550e8400-e29b-41d4-a716-446655440001",
  "contact_name": "Acme ApS",
  "currency": "DKK",
  "subtotal": 10000,
  "vat": 2500,
  "vat_rate": 25,
  "total": 12500,
  "has_mixed_vat": false,
  "outstanding_balance": 12500,
  "outstanding_balance_currency": "DKK",
  "currency_rate": 0,
  "delivery_status": "sent",
  "email_delivery_status": "string",
  "email_sent_at": "string",
  "e_invoice_sent_at": "string",
  "is_overdue": false,
  "payment_state": "open",
  "unmatched_payments_note": "string",
  "items": [
    {
      "unit": "string",
      "vat_account_id": "string",
      "vat_code": "string",
      "sales_account_number": 0,
      "vat_rate": 0,
      "id": "550e8400-e29b-41d4-a716-446655440002",
      "description": "Consulting services",
      "quantity": 10,
      "unit_price": 1000
    }
  ],
  "memo": "Project Q1 delivery",
  "payment_details": {
    "bank_name": "Danske Bank",
    "scheme": "dk-registration-number",
    "clearing_code": "3409",
    "account_number": "0012345678",
    "iban": "DK5030000012345678",
    "swift_bic": "DABADKKK"
  },
  "created_at": "2026-01-15T10:30:00Z"
}