# Getting started

### Introduction

The ChainEx SDK is an advanced tool designed for seamless integration with smart contracts, aligning with the ERC-4337 standard for account abstraction. This comprehensive guide focuses on utilizing the ChainEx SDK to enable gasless transactions and streamline interactions.

### Installing Dependencies[​](https://docs.zerodev.app/create-wallets/passkey#installing-dependencies) <a href="#installing-dependencies" id="installing-dependencies"></a>

Make sure you have installed the ChainEx SDK and all the helper packages:

```sh
npm i @chainex/chainex-sdk
```

{% embed url="<https://www.npmjs.com/package/@chainex/chainex-sdk>" %}
npm
{% endembed %}

### Configuring Environment Variables

Establish the following variable in your environment:

* `API_KEY`: Get your unique ChainEx SDK API key by filling this form <https://forms.gle/E2WGi9gkg267FdoX6>

{% hint style="info" %}
Hit us with your project details and how you want to use our SDK. Our team generally replies within 12 hours and creates a private TG group for further conversation and integration support\
\
We will have a dashboard to handle this part very soon...
{% endhint %}


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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://chainex.gitbook.io/whitepaper/sdk-integration-docs/getting-started.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.