> For the complete documentation index, see [llms.txt](https://siriusnetdocs.gitbook.io/doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://siriusnetdocs.gitbook.io/doc/sdks-and-apis/dapp/dapp-sdk/guides/sdk-quick-start.md).

# SDK Quick start

The dApp SDK exists to help developers build on top of dApp. It's designed to run in any environment that can execute JavaScript (think websites, node scripts, etc.). While simple enough to use in a hackathon project, it's also robust enough to power production applications.

## Installation

The easiest way to consume the SDK is via [npm](https://github.com/mclmatt112/dApp-swap-sdk). To install it in your project, simply run `yarn add @siriuswap/sdk` (or `npm install @siriuswap/sdk`).

## Usage

To run code from the SDK in your application, use an `import` or `require` statement, depending on which your environment supports. Note that the guides following this page will use ES6 syntax.

### ES6 (import)[​](https://docs.uniswap.org/sdk/v2/guides/quick-start#es6-import) <a href="#es6-import" id="es6-import"></a>

```
import { ChainId } from '@SIRIUSWAP/sdk'
console.log(`The chainId of mainnet is ${ChainId.MAINNET}.`)
```

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### CommonJS (require)[​](https://docs.uniswap.org/sdk/v2/guides/quick-start#commonjs-require) <a href="#commonjs-require" id="commonjs-require"></a>

```
const SIRIUSWAP = require('@siriuswap/sdk')
console.log(`The chainId of mainnet is ${SIRIUSWAP.ChainId.MAINNET}.`)
```