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# Introduction

> **Info**
>
> **In active development:** The Experience Delivery API is shared with design partners while it is being built out. The shape of resources and endpoints may change before general availability.

The Experience Delivery API (XDA), available at *xdn.contentful.com*, is a read-only API for delivering hydrated Contentful Experiences to apps, websites, and other media. It is the runtime read API that client applications call to fetch the visual structure, personalization variants, and content of a published Experience.

## Basic API information

API Base URL `https://xdn.contentful.com`

*This is a read-only API.*