# Introduction

Welcome to the Sync2Books API documentation. Sync2Books helps you seamlessly sync financial data between your application and accounting systems like QuickBooks Online, Xero, and Sage.

## What is Sync2Books?

Sync2Books is a unified API that enables your application to:

* **Create and sync expenses** to accounting systems
* **Sync bills, invoices, and payments** automatically
* **Upload attachments** to synced transactions
* **Monitor sync status** in real-time
* **Connect accounting systems** via our Link component

## Quick Start

1. [**Get Started**](/getting-started.md) - Set up your API key and make your first request
2. [**Expense Management**](/general-documentation/expense-management.md) - Learn how to create and sync expenses
3. [**Sync & Monitoring**](/general-documentation/sync-and-monitoring.md) - Track sync status and handle errors
4. [**Attachments**](/general-documentation/attachments.md) - Upload files to synced transactions
5. [**Link Integration**](/general-documentation/link-integration.md) - Integrate our Link component (React, Vue, Angular, Svelte)

## API Reference

For complete API reference with interactive examples, visit our [Swagger UI](https://api.sync2books.com/docs) (requires API key).

## Support

* **Email**: <support@sync2books.com>
* **Documentation**: This GitBook
* **Status Page**: [status.sync2books.com](https://status.sync2books.com)

***

**Ready to get started?** Head to [Getting Started](/getting-started.md) to set up your first integration.


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