# Introduction

This section describes API destined for public use (like websites and mobile apps). 

Navigate to [Content Management API](doc-341701) section to see docs for management API.

## `x-locale` header

The content returned in this API is translated and depends on given [X-Locale Header](doc-341635#x-locale-header) which is expected to be
[ISO 639-1 alpha-2 code](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes).

The list of available locales for given Loyalty Club depends on `languages` configured for [Loyalty Club](doc-341644#loyalty-club-model).
It defaults to `main_language` of [Loyalty Club](doc-341644#loyalty-club-model).