Your memory stays on your computer.

What Master stores

Master keeps the facts you choose to save about yourself (your "memories"), the sharing labels you give them, the conversations you choose to save for handoff, and a log of what was shared with which AI and when. All of this is stored in one encrypted file on your own computer. The encryption key is protected by Windows for your Windows login. Master, The Machine and GRP Capital Partners have no access to it.

What the browser extension does

The extension adds a round "M" button to chatgpt.com, gemini.google.com, grok.com and claude.ai. When you press it, the extension talks only to the Master app running on your own computer (localhost, port 47831) with a pairing token you approve inside the app. It inserts the memories you allow into the chat box of the page you are on, saves text you choose as a new memory, and can save the conversation on the page for a handoff. It reads the page only when you press a button. It does not read your browsing history, other tabs, passwords or cookies, and it does not send anything to us or to any third party.

What leaves your computer

• Nothing by default. The app and the extension work entirely on your PC.
• Master Cloud (off by default): if you turn it on in the app's Advanced settings, a copy of your Public and Personal memories is stored on our servers (Cloudflare) so web tools can reach a link to them. You can turn it off and delete the copy at any time.
• Backups (off by default): if you turn them on, an encrypted backup file is written into a folder you pick (for example your Google Drive folder). It can only be opened with the recovery code the app shows you once.
• Local model (off by default): if you turn on a local model, the app downloads the model file once from Hugging Face. The model then runs on your computer; your questions and memories are not sent anywhere.
• Grok with your own key (off by default): if you add an xAI API key, the facts Master found for a question are sent to xAI under your own account.

Permissions the extension asks for, and why

• storage: to keep the pairing token and your button preferences on your PC.
• alarms: to tell the app once a minute that the button is installed, so the app can show "connected".
• Access to 127.0.0.1:47831: the Master app on your own computer. This is the only network address the extension contacts.
• Access to chatgpt.com, gemini.google.com, grok.com, claude.ai: to show the M button there and put text into the chat box when you press it.

Data we collect on this website

The Master website keeps a waitlist of email addresses you enter yourself, and, for Master Cloud accounts, an email address, a password hash and the memories you chose to sync. We do not sell or share personal data. We do not use advertising trackers.

Your choices

Delete any memory, handoff or backup in the app. Turn off Master Cloud in Advanced settings to delete the cloud copy. Remove the extension from your browser at any time; nothing remains in the browser except the pairing token, which is removed with it.

Contact

Questions: jane@grpcap.com. Master is part of The Machine by GRP Capital Partners LLC.