# Prerequisites > **Warning** > > Project Neo is currently in [Technical Preview](../../../a-z/squirro-glossary.md#term-Technical-Preview). Features described in this section may change before general availability. Before creating your first bundle project, make sure you have everything listed below. ## Node.js 22.18 or Later Check your installed version: ```bash node -v ``` If you need to install or upgrade Node.js, use the [official installer](https://nodejs.org) or a version manager such as `nvm`. ## A Squirro Instance You need access to a running Squirro instance and a refresh token to authenticate API requests during development. ### How to Get a Refresh Token 1. Log in to your Squirro instance. 2. Click your profile picture in the top-right corner. 3. Navigate to My Account → API Access. 4. Generate a **User Token** and copy it. You paste it during `neo-ui create bundle`. The token is stored in the project `.env` file and is used by the local development server to authenticate API calls on your behalf. ## Installing the CLI `@squirro/neo-ui` and `@squirro/neo-core` are published on the public npm registry. No registry configuration, GitHub account, or access token is required. Install the CLI globally: ```bash npm install -g @squirro/neo-ui ``` Verify the installation: ```bash neo-ui ``` You should see the CLI welcome message and a list of available commands. > **Important** > > Earlier releases published the `@squirro` packages to GitHub Packages, and the setup instructions had you add a `@squirro:registry=https://npm.pkg.github.com` line to `~/.npmrc`. That line redirects every `@squirro` request to the old registry and makes the install fail. Remove it from `~/.npmrc`, and from the project `.npmrc` of any bundle created before the move, then revoke any GitHub token you created only for package access. For more information, see the [Troubleshooting](troubleshooting.md#neo-extensions-troubleshooting) page. ### Updating the CLI To update to a newer version, run the same install command with the `@latest` tag: ```bash npm install -g @squirro/neo-ui@latest ``` To check which version is installed: ```bash npm list -g @squirro/neo-ui ``` Inside an existing bundle, run `neo-ui upgrade` instead. It updates both `@squirro` packages together and migrates a bundle that still depends on the pre-rename `@squirro/nextgen-core` package. For more information, see the [Migrating from nextgen to neo-ui](migrating-from-nextgen.md#neo-extensions-migrating) page. ## Summary Checklist - Node.js 22.18 or later installed. - Squirro instance URL (for example, `https://your-instance.example.com`). - Squirro refresh token. - `@squirro/neo-ui` installed globally.