⚠️ DEPRECATED

This repository is deprecated and no longer actively maintained. MetaMask SDK has been superseded by MetaMask Connect, a ground-up rewrite with a streamlined API, direct wallet communication (no relay server), and multichain support out of the box.

Migrate to:

• @metamask/connect-evm — drop-in EVM dapp integration (browser, Node.js, React Native)
• @metamask/connect-multichain — multichain dapp integration (EVM + non-EVM)

Migration guide & docs: https://docs.metamask.io/metamask-connect

New repo: https://github.com/MetaMask/connect-monorepo

MetaMask SDK enables developers to seamlessly connect their dapps to the MetaMask extension and mobile app.

You can use the SDK via the following platforms and libraries:

• Wagmi (recommended)
• JavaScript
• Dynamic SDK
• Web3Auth SDK
• React Native
• Web3-Onboard

See the MetaMask SDK documentation for more information.

• Session persistence
• Multi MetaMask provider (let user choose between browser extension and mobile wallet)
• Batch RPC calls (send multiple requests to your wallet at once)
• Read-only RPC calls and Infura integration
• Wagmi hook integration (alpha)
• i18n
• Full modal UI customization
• Smart contract library (coming soon)

Install the SDK:

yarn add @metamask/sdk

or

npm i @metamask/sdk

See the full list of JavaScript SDK options.

To contribute to MetaMask SDK, see the contribution guidelines.

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