# Introduction

Welcome to the [PORTOS Cash register](https://portos.sk) system developer guide.

This documentation serves as a reference for the REST API server, which is an integral part of the PORTOS Cash Register solution developed by Nine Digit s.r.o.

The server facilitates communication with hardware devices such as order printers for food orders and fiscal printers for receipt printing. By utilizing the endpoints outlined in this guide, the client is relieved of the need to directly communicate with hardware components or external services. This comprehensive API coverage encompasses the entire sales process, from food ordering to receipt printing.

{% hint style="info" %}

#### Looking for the user manual? See [docs.portos.sk](https://docs.portos.sk/).

The user manual provides detailed instructions and guidance in the Slovak language on how to use the PORTOS Cash Register system.
{% endhint %}


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.portos.sk/master.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.