MetaMask Connect SDK

When to use

• You want to set up a dApp's MetaMask integration — EVM, Solana, or both (multichain) — in vanilla browser JS/TS, React, or React Native
• You want a headless integration — a Node.js CLI, server, or bot that connects to MetaMask Mobile via a terminal QR code
• You want to connect/disconnect, manage the provider and session state, or switch chains
• You want to sign messages (personal_sign, eth_signTypedData_v4, Solana signMessage) — e.g. Sign-In With Ethereum or nonce auth
• You want to send transactions (eth_sendTransaction, Solana sendTransaction / signAndSendTransaction)
• You want to operate across chains through the multichain client's invokeMethod
• You want to use or migrate to the wagmi metaMask() connector
• You want to migrate an existing @metamask/sdk integration to the Connect SDK
• You need to diagnose connection failures, React Native polyfill errors, or QR/deeplink issues

Installation

Pick the client for your integration: