Install Mulpex

One-line install

If you'd rather skip the download/mount/copy dance, the install script does it for you:

bash -c "$(curl -fsSL https://mulpex.dev/install.sh)"

It downloads the latest DMG, copies Mulpex.app into /Applications/, and strips the Gatekeeper quarantine attribute. Safe to re-run to upgrade.

Prerequisites

• macOS on Apple Silicon (arm64).
• The Claude Code CLI on your PATH. See Anthropic's setup guide to install it.

First launch — Gatekeeper

Mulpex is currently shipped unsigned, so macOS will refuse to open it the first time. Pick one of these:

1. Right-click to Open. In Finder, right-click /Applications/Mulpex.app, choose Open, and confirm in the dialog. You only need to do this on the first launch.
2. Strip the quarantine flag. Run this once in Terminal:

   xattr -cr /Applications/Mulpex.app

   Then open Mulpex normally.

The install script above already runs xattr -cr for you, so this step is only relevant if you installed by hand.