#show-card ## Overview [[MetaMask]] is a popular non-custodial cryptocurrency [[Wallet|wallet]] and gateway to blockchain applications, primarily for the [[Ethereum]] ecosystem and EVM-compatible chains. It is available as a browser extension and a mobile application, allowing users to store, manage, and transact with cryptocurrencies and [[NFT|NFTs]], as well as interact with decentralized applications ([[DApp|dApps]]) directly from their browser or phone. - **Problem Solved:** Provides a user-friendly interface for managing crypto assets and interacting with dApps, abstracting away some of the complexities of direct blockchain interaction. - **Value Proposition:** Wide adoption, ease of use, supports multiple [[EVM]] chains, direct dApp interaction, and integration with wallet|[[Hardware wallet|hardware wallets]]]]. - **Official Website:** [https://metamask.io/](https://metamask.io/) - **Developed By:** ConsenSys - **Status:** Live and widely used. ## Key Features - **Multi-Chain Support:** Supports Ethereum and a vast number of other EVM-compatible networks (e.g., [[Polygon]], [[BNB chain|BNB Chain]], [[Avalanche]], [[Optimism]], [[Arbitrum]], [[Linea]]). - **Token Management:** Allows users to store, send, and receive ETH and various [[ERC-20]], [[ERC-721]] (NFT), and [[ERC-1155]] tokens. - **dApp Browser:** Enables users to connect to and interact with decentralized applications directly from the wallet interface. - **Swaps:** Integrated token swap functionality, sourcing [[Liquidity|liquidity]] from various decentralized exchanges ([[DEX|DEXs]]). - **Security:** Non-custodial (users control their [[Private key|private keys]]), supports wallet|hardware wallet]] integration (e.g., [[Ledger]], Trezor) for enhanced security. - **[[Gas]] Fee Customization:** Allows users to customize gas fees for their transactions. - **Developer Friendly:** Provides [[API|APIs]] for dApp developers to integrate wallet connectivity. ## Technology - **Type:** Software wallet (browser extension and mobile app). - **Platform:** Primarily Ethereum and EVM-compatible chains. - **Key Management:** Users manage their own [[Seed|seed]] phrases and private keys. ## Ecosystem & Use Cases - **Target Audience:** Cryptocurrency users (beginners to advanced), dApp users, developers. - **How It's Used:** Storing and transacting crypto, buying/selling/managing NFTs, interacting with [[DeFI|DeFi]] protocols, participating in [[DAO|DAOs]], accessing [[Web3]] games. ## Getting Started & Resources - **Access:** Download browser extension or mobile app from the official website. - **Documentation:** [https://support.metamask.io/](https://support.metamask.io/) - **Community:** Active on Twitter, forums, and support channels. ## Related Concepts - Ethereum - EVM