Install Node.js
Every iClaude install command starts with npx, which comes bundled with Node.js. Install Node once and you're set for every tutorial after this.
Pick your operating system
macOS
Two ways: the official installer (easiest) or Homebrew (better if you already use it).
Option A — official installer
Download the installer
Go to nodejs.org/en/download. Click the big green button that says LTS (Long Term Support). It downloads a .pkg file to your Downloads folder.
Run the installer
Double-click the file. Click Continue through every screen, then Install. Enter your Mac password if asked. When it says "The installation was successful," close the window.
Option B — Homebrew
$ brew install nodeWindows
Download the installer
Go to nodejs.org/en/download. Pick Windows · LTS · .msi · 64-bit. The file lands in your Downloads folder.
Run the installer
Double-click the .msi file. Click Next through every screen. When you see the checkbox Automatically install the necessary tools for native modules, leave it unchecked — you don't need it for iClaude and it adds 30 minutes of extra setup. Click Install, then Finish.
Restart your terminal
If you had PowerShell or Command Prompt open, close it and open a fresh window. Otherwise the new node command won't be found.
Linux
On Ubuntu, Debian, or any Debian-based distro (including WSL on Windows):
$ curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -
$ sudo apt-get install -y nodejsOn Fedora / RHEL:
$ curl -fsSL https://rpm.nodesource.com/setup_lts.x | sudo bash -
$ sudo dnf install -y nodejsOn Arch:
$ sudo pacman -S nodejs npmVerify it worked
Open a fresh terminal window and run these two commands. Both should print a version number.
$ node --version
$ npx --versionYou should see something like v20.18.1 for node and 10.x.x for npx. If both numbers appear, you're done.
Common errors and fixes
command not found: node (Mac/Linux) or 'node' is not recognized (Windows)
The terminal you have open is older than the install. Close every terminal window and open a fresh one. If that doesn't fix it, log out and log back in.
command not found: npx
You probably have a very old Node version. npx ships with every Node since 5.2 (2015), so this usually means the install was partial. Re-run the installer.
EACCES: permission denied when running npx
On macOS or Linux this means npm is trying to write to a folder you don't own. The right fix is to change npm's default directory. Don't run sudo npx — it works once and creates root-owned files that break the next install.
The installer hangs or won't finish on Windows
Almost always corporate antivirus. Pause it, run the installer, and re-enable it. If you can't pause it, ask IT to whitelist the installer.
Next step
Node is in place. Now pick the AI tool you want to install skills into: