MetaMask Connect supports Ethereum and all EVM-compatible networks (Polygon, Arbitrum, Optimism, Linea, Base, etc.) through @metamask/connect-evm, Solana through @metamask/connect-solana, and both simultaneously through @metamask/connect-multichain.
- [Integration options]( MetaMask Connect Integration Options - Multichain, EVM, and Solana | MetaMask developer documentation )