MetaMask developer documentation

Connect your dapp to the MetaMask browser extension and mobile app. Ideal for users who want full control over their keys and transactions.

Onboard power users and first-time users in seconds via social logins, passkeys, or by integrating your own authentication providers.

Integrate MetaMask Smart Accounts into your dapp. Create smart wallets that support delegated permissions, gas abstraction, and secure execution.

Use high performance APIs provided by MetaMask and Infura to build and scale your dapp or Snap.

Create a custom mini app that runs inside the MetaMask extension. Add support for custom networks, accounts types, and APIs.