Get the extension Locker Protocol Wallet Extension
The air-gapped Vault in your browser. A drop-in MetaMask replacement that works with any Web3 dApp, your private keys never leave the Vault.
Get it for your browser
Free, and installed from a single Chrome Web Store listing.
Chrome and Brave install the extension from the same Chrome Web Store listing.
Why the Locker Protocol Wallet Extension?
Any Web3 dApp
A drop-in MetaMask replacement: swaps, bridges, lending, NFT marketplaces, if it works with MetaMask, it works with Locker Protocol Wallet.
Keys Stay Air-Gapped
The extension holds no wallet key. Every transfer is signed by your offline Vault through QR codes, so nothing in the browser can withdraw or send your funds.
Simplified Vault Usage
A guided, step-by-step signing ceremony in the side panel. Air-gapped security made as simple as scanning a QR code.
AI-checked signing ceremony
Before any QR reaches your Vault, the extension analyzes the request on-device: deterministic rules gate the dangerous shapes, and a local AI model flags unusual patterns - no cloud. The Vault then re-checks everything independently with its own embedded model.
How It Works
Connect like MetaMask
Open any Web3 dApp and connect: the extension exposes your Vault accounts to the dApp, without any private key.
Scan with your Vault
When a signature is needed, the extension shows a QR code. Scan it with your offline Vault, review and approve the operation.
Broadcast the signature
Present the signed QR code back to the extension's camera. The transaction is broadcast, your keys never touched the internet.
You'll need a Locker Vault
The extension pairs with the air-gapped Locker Vault, the offline device that holds your keys and signs every operation.