MoatKey · Help

Browser extension

Last updated October 23, 2026

MoatKey for Chrome is out now on the Chrome Web Store, and it also installs in other Chrome-based browsers such as Brave and Opera. The Microsoft Edge version is out now on Microsoft Edge Add-ons.

Three ways to open it

• Popup: click the MoatKey icon in the toolbar. It shows logins for the page you're on, with Fill buttons, a search box (Find a login or Castle, see Quick Find), Copy username, Copy password and Copy 2FA code buttons on each row, and a Lock button. At the bottom: Password generator, Full Castle view and Open in side panel.
• Full Castle view: MoatKey in a browser tab. This is where you add and edit items, manage Castles and change settings.
• Side panel: MoatKey docked beside the page, where your browser supports it. Use the ☰ MoatKey menu for + New Castle, the tools, Lock and Sign out, or Open full view.

You can't add items from the popup. Open the full Castle view for that.

Finding things in the full view

• Area tabs at the top of the sidebar: Personal, Family and Work. They only sort your Castles.
• Your Castles, each marked Private or Shared, and + New Castle.
• Tools:
  • Generator – passwords and passphrases
  • Password health – weak, reused and old passwords, and logins that could use two-step sign-in (see Password health)
  • Import
  • Export & backup
  • Secure Drop
  • Plan & billing
• Settings:
  • Unlock & security – master password, recovery kit, security keys, phone unlock, how long MoatKey stays unlocked, light or dark appearance, and account deletion
  • Saving & filling – offer to save logins, the fill shortcut and card fill
  • Account
  • About – the MoatKey version
• At the bottom: Signed in as your email, with Lock and Sign out.

For the open Castle you also get Members, Recently deleted, Castle settings and Activity. Each one only appears if your role allows it (see Roles).

Locking

Choose Lock any time. To change how long MoatKey stays unlocked, open Settings → Unlock & security → Stay unlocked and pick Lock after:

• Lock when I close MoatKey
• 5 minutes of inactivity
• 15 minutes of inactivity (the default)
• 1 hour of inactivity
• Until I lock my computer (up to 12 hours)

With the last choice, MoatKey stays open until you lock your computer, close the browser, put the computer to sleep, or 12 hours pass. Lock your computer when you step away.

The key is kept in browser memory only. It is forgotten when the browser closes, when you press Lock, or when you sign out.

To unlock faster, add a security key or passkey or approve on your phone.

Keyboard shortcuts

• Alt+Shift+F: open MoatKey to fill this page.
• Alt+Shift+L: fill the login for the site you are on, when exactly one saved login matches it. Otherwise it opens MoatKey.
• Alt+Shift+S: save the login on this page to MoatKey.

To see or change a key, type chrome://extensions/shortcuts in the address bar (in Edge, edge://extensions/shortcuts) and find Fill the login for this site under MoatKey. The browser does not let an extension open that page for you. Settings → Saving & filling shows the current key, or Not set if no key is assigned.

Quick Find

The search box in the popup and full view is Quick Find. Press Ctrl+K (Cmd+K on a Mac) to jump to it inside a MoatKey page. Use the arrow keys to move, Enter to copy a login’s password (or an authenticator’s code), Shift+Enter to open the item and Esc to go back. It searches the Castle that is open. See Quick Find.

Quick copy in the popup

Each row in the popup has Copy username, Copy password and Copy 2FA code buttons. Items in the Dungeon have none; they ask you to prove it’s you when you open them.

Offer to save logins

This is optional and off until you turn it on in Settings → Saving & filling → Offer to save logins. Your browser asks once to let MoatKey read secure (https) sites. Turning the setting off gives that access back. See Save a login from a page.

Passkeys in the extension (Beta) use the same browser permission and have their own switch. See Passkeys in the browser extension.

Light and dark mode

Open Settings → Unlock & security → Appearance and choose System, Light or Dark. System follows your computer’s light or dark setting. This choice is kept on this device only.

About and diagnostics

Settings → About shows the MoatKey version. Copy diagnostics copies the version, your browser, your operating system and which switches are on or off, to paste into an email to support. It never includes a list of sites or any item.

Copying passwords

When you copy a password or code, MoatKey reminds you to clear your clipboard after pasting. The extension doesn't clear it for you.

Still need help? Email support@moatkey.com.