# Coinbase Wallet Extension: Capabilities, Security Model, and Supported Networks

Coinbase Wallet Extension is a self-custody Web3 wallet that runs directly in your desktop browser, giving you full control over your private keys and on-chain assets without relying on a centralized custodian. Unlike Coinbase.com, the exchange where the company holds your funds, the Wallet Extension is a separate product where you alone are responsible for securing your recovery phrase and approving every transaction.

**Browser Integration and dApp Access**

The extension installs into Chrome or Brave and layers on top of your regular browser experience, similar to an ad-blocker or coupon extension. This design allows you to connect your wallet to thousands of decentralized applications (dApps) across Ethereum and all EVM-compatible networks, including Uniswap for token swaps, OpenSea for NFT trading, and various DeFi protocols for lending, borrowing, or earning yield. You can transact directly from your laptop without needing to confirm actions on your mobile device, though the extension and mobile app can share the same wallet address if you import the same recovery phrase. The extension also supports Ledger hardware wallet pairing, adding a physical confirmation layer for users who want to keep keys entirely offline.

**Self-Custody and Recovery Model**

When you set up the Coinbase Wallet Extension, you create a 12-word secret recovery phrase that serves as the master key to your wallet. Coinbase never stores this phrase, and the company explicitly states it cannot recover it for you if lost. Private keys are stored directly on your browser, not on Coinbase servers, which means you have complete ownership but also complete responsibility. If you lose your device or uninstall the browser, you can restore access by importing the recovery phrase into the extension or another compatible wallet. For users who prefer not to manage a seed phrase, Coinbase Wallet also offers passkey-based sign-in and optional encrypted cloud backup, though the traditional recovery phrase remains the primary method.

**Security Features Built Into the Extension**

The extension includes several protections designed to reduce common Web3 risks. Token approval alerts show you exactly which assets a dApp is requesting permission to withdraw before you confirm a transaction, helping you avoid malicious contracts that drain wallets. Transaction previews estimate how your token balances will change after a transaction, giving you a clearer picture before pressing confirm. Coinbase maintains a dApp blocklist using public and private databases, so if you visit a known malicious application, the wallet warns you before you proceed. Spam token management hides known malicious assets from your main screen, and you can report suspicious tokens that appear in your wallet. Permission management lets you review and revoke existing dApp connections, minimizing your exposure to potential vulnerabilities over time.

**Supported Networks and Assets**

The extension supports Ethereum and Solana natively, along with over 5,500 assets on Ethereum and the ability to trade on decentralized exchanges. For Solana, you can store, send, and receive SOL and SPL tokens, though dApp connections and trading on Solana were noted as coming soon at the time of the documentation. Coinbase Wallet has expanded to support more than 10 blockchain networks, including Base, Ethereum, Solana, Bitcoin, BNB Chain, Optimism, Arbitrum, Polygon, Avalanche, Robinhood Chain, and Monad. However, some networks were discontinued after August 15, 2026, including Dogecoin, Litecoin, Bitcoin Cash, XRP, and zkSync Era, meaning users holding assets on those networks need to import their recovery phrase into another wallet to access them. The extension specifically does not support Bitcoin or Solana through the WalletLink mobile-approval mode; those assets require the standalone browser extension.

**Practical Implications for Users**

Using the Coinbase Wallet Extension means accepting a specific trade-off: you gain direct access to Web3 without intermediaries, but you also carry the full burden of security. Every transaction requires manual approval, and there is no customer support team that can reverse a mistaken transfer or restore a lost phrase. The extension works best for users who understand network selection, gas fees, and the importance of storing recovery phrases offline. If you already use a MetaMask or Trust Wallet, you can import your existing recovery phrase into the Coinbase Wallet Extension to consolidate your assets under one interface, provided you trust the browser environment where the keys will reside.