Built for the API first

curl -X POST https://arkrel.com/v1/documents \
  -H "Authorization: Bearer $API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -F "file=@invoice.pdf" \
  -F "document_type=invoice"

{
  "document_type": "invoice",
  "fields": {
    "total": {
      "value": 1080.00,
      "confidence": 0.94,
      "source": { "page": 1, "bbox": [420, 648, 500, 662] }
    }
  },
  "tables": [{ "name": "line_items", "row_count_expected": 4, "row_count_extracted": 4, "rows": [ ] }],
  "checks": [
    { "id": "subtotal_tax_total", "name": "Subtotal + tax = total", "passed": false,
      "expected": 1090.00, "actual": 1080.00,
      "detail": "Stated total is $10.00 less than subtotal + tax." }
  ],
  "pages": { "total": 1, "processed": 1 },
  "warnings": []
}