# Introduction

The Datelist API allows you to build external systems that programmatically communicate with the [Datelist.io application](https://datelist.io). 

This guide contains the REST interface to interact with the Datelist API. \
For a specific integration with your language, you can also check our SDK: 

* **For Python**: <https://pypi.org/project/datelist-sdk-python/>
* **For Ruby**: <https://rubygems.org/gems/datelist>
* **For Javascript**: <https://www.npmjs.com/package/datelist-sdk-js>