Developer-First FBR Invoicing API

Connect your custom PHP, Laravel, C#, or legacy desktop billing POS with FBR in minutes using our REST JSON API.

JSON REST API

Integrate Any POS or Custom ERP

FBR's direct integration uses complex encryption, custom XML packets, and SOAP protocols that are notoriously slow and difficult to build.

Invoice2IRIS abstracts that complexity. Send us a simple JSON POST request; we handle validation, formatting, encryption, FBR submission, and return the printable FBR Stamp URL and QR string.

Why Developers Love Invoice2IRIS:

100% sandbox staging environment
Simple authentication headers (Bearer tokens)
SDKs in PHP, JavaScript, Python, C#

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POST /api/v1/invoices

curl -X POST https://api.invoice2iris.com/v1/invoices \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "buyer_name": "Corporate Client Ltd",
    "buyer_ntn": "1234567-8",
    "items": [
      {
        "name": "Industrial Cotton Roll",
        "hs_code": "5208.1100",
        "quantity": 10,
        "unit_price": 5000.00,
        "tax_rate": 18.0
      }
    ]
  }'

// Using Laravel Http client
Http::withToken('YOUR_API_TOKEN')
    ->post('https://api.invoice2iris.com/v1/invoices', [
        'buyer_name' => 'Corporate Client Ltd',
        'buyer_ntn' => '1234567-8',
        'items' => [
            [
                'name' => 'Industrial Cotton',
                'hs_code' => '5208.1100',
                'quantity' => 10,
                'unit_price' => 5000.00,
                'tax_rate' => 18.0
            ]
        ]
    ]);

const response = await fetch('https://api.invoice2iris.com/v1/invoices', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_TOKEN',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    buyer_name: "Corporate Client Ltd",
    buyer_ntn: "1234567-8",
    items: [{
      name: "Industrial Cotton",
      hs_code: "5208.1100",
      quantity: 10,
      unit_price: 5000.00,
      tax_rate: 18.0
    }]
  })
});

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