> For the complete documentation index, see [llms.txt](https://l1x-sdk.gitbook.io/l1x-developer-interface/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://l1x-sdk.gitbook.io/l1x-developer-interface/interface-essentials/l1x-evm-sdk/pre-requisites.md).

# Pre-Requisites

**For Node.js:**

```bash
node --version
```

If Node.js is installed, this command will output the version of Node.js installed on your system. If Node.js is not installed, you will likely see an error message stating that the command `node` is not found.

**Also, Ensure that Node.js version 18 is installed on your system.**

```bash
nvm install v18
nvm use v18
```