REST API für Entwickler

// Rechnung erstellen via Konten24 API
$response = Http::withToken('your-api-token')
    ->post('https://api.konten24.ch/v1/invoices', [
        'customer_id' => 1234,
        'items' => [
            ['description' => 'Beratung', 'amount' => 1500.00],
            ['description' => 'Support', 'amount' => 250.00],
        ],
        'vat_rate' => 8.1,
    ]);

// QR-Rechnung als PDF herunterladen
$pdf = $response->json('pdf_url');