Overview

Welcome to the InvoisX API documentation. InvoisX provides the simplest way to integrate Malaysia's LHDN e-invoicing system into your applications.

What is InvoisX?

InvoisX is a complete e-invoicing platform that handles the complexity of LHDN's MyInvois system, so you can focus on building your application. With InvoisX, you can:

• Create and manage invoices with automatic tax calculations
• Submit documents to LHDN with real-time validation
• Generate QR codes for customer verification
• Handle all document types (invoices, credit notes, debit notes, refund notes, self-billed documents)

The Simple Flow

Create Buyer → Create Invoice → Validate → Submit to LHDN → Get QR Code

That's it. Five steps to full LHDN compliance.

Key Features

Auto-Calculate Everything

Just send your line items with quantities and prices. We handle:

• Tax calculations (SST, Service Tax, Sales Tax)
• Discounts and fees
• Totals and subtotals
• Currency exchange rates

Real-Time Validation

Catch errors before LHDN does. Our validation engine checks your documents against all LHDN requirements before submission.

Multiple Document Types

One API, all document types:

Type	Use Case
Invoice	Standard sales invoices
Credit Note	Adjustments reducing amount owed
Debit Note	Adjustments increasing amount owed
Refund Note	Full refunds
Self-Billed Invoice	When you issue invoices on behalf of suppliers

Developer-Friendly

• RESTful API with consistent patterns
• Comprehensive error messages
• Sandbox environment for testing
• SDKs for popular languages

API Base URL

Production

https://invoisx.com/api/v1

Sandbox

https://sandbox.invoisx.com/api/v1

Next Steps

1. Prerequisites - What you need before starting
2. Authentication - Set up your API token
3. Quick Start - Submit your first invoice in minutes