> ## Documentation Index
> Fetch the complete documentation index at: https://docs.subotiz.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

Subotiz API requests must use HTTPS and comply with RESTful API specifications.

## Requirements

* All API requests must be sent via HTTPS
* All requests must include common request headers as specified by the Subotiz API specifications
* All requests must be authenticated
* JSON format must be used as the data interchange format

## Common Request Headers

| **Header**    | **Example Value**                    | **Description**                                                         |
| ------------- | ------------------------------------ | ----------------------------------------------------------------------- |
| Authorization | Bearer `{your_api_key}`              | API Key authentication. See: [Authentication](/en/api/authentication-1) |
| Content-Type  | application/json                     | Request body format                                                     |
| Request-Id    | 1c801db7-dcda-4e93-8c06-d1414c426f0d | Unique request identifier                                               |