Get Guardpup

Browser Extension

For ChatGPT, Claude and Gemini (Copilot, Perplexity, Grok and DeepSeek: being tested). Tested in Chrome; Edge, Brave and Arc should work and are being tested.

Add to Chrome

Then click the puzzle piece 🧩 at the top right of the browser and pin Guardpup, so you can see Rocky, our guard pup. Using Edge? Get it for Edge (being tested).

Mac App

For the ChatGPT, Claude and Gemini desktop apps (Perplexity, Cursor, VS Code and Devin: being tested). macOS 14 or later.

Download for Mac

Open it, drag Guardpup into Applications, and open it from there. When it asks, allow it in Accessibility: that lets it ask "masked or the original?" right when you paste. More in the Mac app docs.

Windows App Being tested

For the ChatGPT and Claude desktop apps (Perplexity: being tested). A first version, not yet tried on a real PC: tell us how it goes.

Download for Windows

For ARM PCs (Surface, Snapdragon): the ARM version. Windows may warn that it doesn't know the app yet: click More info, then Run anyway.

Developer Tool

For Claude Code, Cursor and VS Code (Devin and Gemini CLI: being tested), on a Mac or Linux; the Windows build is on its way. In a terminal, with Node.js 20.11 or later:

npm install -g guardpup
guardpup init

init sets up Claude Code, and offers the other agents it finds (it asks first). Then restart them. Try it: ask your agent to "show me the .env file". Guardpup stops it and explains why. More for developers.