curl "https://invoice.horizonpay.co/api/v1/invoice-items?invoice=in_Pb2Xk7Mv4Qs9Lr1Wd6Tn3Fh8" \
  -H "Authorization: Bearer $INVOICE_AI_API_KEY"

import InvoiceAI from '@horizonpay/invoice-ai'

const invoiceai = new InvoiceAI() // reads INVOICE_AI_API_KEY

for await (const item of invoiceai.invoiceItems.list({
  invoice: 'in_Pb2Xk7Mv4Qs9Lr1Wd6Tn3Fh8',
})) {
  console.log(item.description, item.amount)
}

from invoice_ai import InvoiceAI

client = InvoiceAI()  # reads INVOICE_AI_API_KEY

for item in client.invoice_items.list(invoice="in_Pb2Xk7Mv4Qs9Lr1Wd6Tn3Fh8"):
    print(item.description, item.amount)

{
  "data": [
    {
      "id": "ii_Da4Vq9Ns2Kx7Bm3Yt8Rc1Lp6",
      "object": "invoiceitem",
      "price": "price_Jc5Tn8Wq1Ze6Ra3Ym9Ub2Gs7",
      "product": "prod_Hy7Rq2Lm9Xc4Vb8Nt3Kd6Pw1",
      "description": "Consulting retainer",
      "quantity": 1,
      "unit": "NOS",
      "unit_amount": 2500000,
      "amount": 2500000,
      "discount_percent": 0,
      "tax_rate": 0,
      "tax_amount": 0
    },
    {
      "id": "ii_Ew8Hz3Jc6Tq1Ms5Nv9Kb2Xr4",
      "object": "invoiceitem",
      "price": null,
      "product": null,
      "description": "Onboarding workshop",
      "quantity": 1,
      "unit": "NOS",
      "unit_amount": 50000,
      "amount": 50000,
      "discount_percent": 0,
      "tax_rate": 0,
      "tax_amount": 0
    }
  ]
}

{
  "type": "https://invoice.horizonpay.co/problems/unauthorized",
  "title": "Unauthorized",
  "status": 401,
  "detail": "Send your API key as `Authorization: Bearer inv_live_…`.",
  "instance": "req_7f3c9a1e2b4d4e8a9c6f2d1b0a3e5f71",
  "code": "unauthorized"
}

{
  "type": "https://invoice.horizonpay.co/problems/forbidden",
  "title": "Insufficient scope",
  "status": 403,
  "detail": "This credential is missing the invoices:write scope.",
  "instance": "req_7f3c9a1e2b4d4e8a9c6f2d1b0a3e5f71",
  "code": "forbidden"
}

{
  "type": "https://invoice.horizonpay.co/problems/not-found",
  "title": "Not found",
  "status": 404,
  "detail": "Invoice not found.",
  "instance": "req_7f3c9a1e2b4d4e8a9c6f2d1b0a3e5f71",
  "code": "not_found"
}

{
  "type": "https://invoice.horizonpay.co/problems/validation",
  "title": "Validation failed",
  "status": 422,
  "detail": "Some fields need attention.",
  "instance": "req_7f3c9a1e2b4d4e8a9c6f2d1b0a3e5f71",
  "code": "validation",
  "errors": [
    {
      "path": "invoice",
      "message": "Pick an invoice"
    }
  ]
}

{
  "type": "https://invoice.horizonpay.co/problems/rate-limited",
  "title": "Too many requests",
  "status": 429,
  "detail": "Rate limit of 120 per 60s exceeded.",
  "instance": "req_7f3c9a1e2b4d4e8a9c6f2d1b0a3e5f71",
  "code": "rate_limited"
}