MetaMask is the most popular cryptocurrency wallet for interacting with DeFi applications. This comprehensive guide walks you through the complete setup process, from installation to your first transaction.
What is MetaMask?
MetaMask is a browser extension and mobile app that serves as your gateway to the decentralized web. It allows you to store, send, and receive Ethereum and other ERC-20 tokens while connecting to thousands of DeFi applications.
Installation Steps
- Visit metamask.io and download for your browser
- Click “Create a Wallet” and set a strong password
- Write down your 12-word seed phrase on paper (never digitally!)
- Verify your seed phrase to complete setup
Security Best Practices
Your seed phrase is the master key to your wallet. Store it offline in multiple secure locations. Never share it with anyone, and be aware that MetaMask support will never ask for it.
Adding Networks
MetaMask supports multiple networks beyond Ethereum mainnet. You can add Polygon, Arbitrum, Optimism, and other networks to access DeFi applications across different chains with lower fees.