Guardpup

Stops passwords, keys, card numbers and personal details reaching AI chats by swapping them for realistic stand-ins, on your device.

Protect your secrets when you use AI. It's easy to paste a password, an API key or a customer's details into ChatGPT without thinking. Once it's sent, it's stored on someone else's servers, out of your hands. Guardpup stops that moment, before anything leaves your computer. How it works - When you paste or send something sensitive, Rocky, your guard pup, shows what he found and what the AI would get instead. - Choose Mask and the AI receives realistic stand-ins. A key keeps its shape, an email becomes example.com, a card becomes a test number, so the AI still helps you. - The stand-ins stay highlighted in the chat, and one click shows your real values again. Copy code the AI wrote and your real keys come back in it. - Already pasted a key into AI? "Check my AI history" checks what you already sent ChatGPT or Claude, on your computer, and lists what to change, with a link to replace each one. It reads an export of your chats, or your chats straight from claude.ai when you're signed in. Reading straight from chatgpt.com is new and being tested. Free, with no account API keys and tokens, private keys, passwords written in a message, card numbers, national ID numbers from seven countries, and names, emails, phone numbers and postal addresses, in ChatGPT, Claude and Gemini. What you type, paste or attach never leaves your computer. There's a free Guardpup Mac app for the desktop AI apps too. Guardpup Pro (7 days free, no card) - Screenshots and files: secrets in images are covered before they're attached; PDF, Word, Excel and PowerPoint files are read and sent as a masked text copy. - Your own list of things to protect: a password, an ID, a client's or project's name. - Learns from you ("Stop asking", "This is me"), a weekly report, and fixes when an AI site changes, without waiting for a store update. Guardpup itself connects only to guardpup.io: with Pro, to check your subscription, and once a week if you choose to share anonymous usage counts (off unless you turn it on). With Team, your company can also turn on a weekly team report: totals with no names and no content. Otherwise it never connects at all. Neither ever contains what you type, paste or attach. Check my AI history: when you ask, Guardpup reads your past chats from ChatGPT or Claude, right in your browser, the same way the site shows them to you. Nothing goes to Guardpup, and the report stays on your computer. For teams Company rules and a company list of protected names, shared with one link, without seeing anyone's chats. Setup through device management is being tested. 14 days free. Works on ChatGPT, Claude and Gemini. guardpup.io/sites lists the other AI sites being tested. Questions or problems: hello@guardpup.io