# Introduction

#### **Overview**

**Introduction**

While the Celenity  API is free to explore for everyone, you will need a Celenity account to use it. After the easy sign-up process, you will get your API key and Base URL which is all you need to start using our API.

* **Base URL**: `https://api.celenity.net/v1`
* **Authentication**: All API requests must be authenticated using an API key.


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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://developer.celenity.net/api-documentation/overview/introduction.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.