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Build with MetaMask

A suite of developer tools to empower dapp developers to build innovative experiences for the most powerful, crypto-native users on MetaMask

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Build with MetaMask

  • Integrate with MetaMask wallet

    • MetaMask SDK

      Seamless, reliable, and customizable connection to the browser extension and mobile clients.

      Documentation
    • Multichain API

      Connect dapps to users’ Ethereum and non-EVM accounts

      Documentation
    Integrate with MetaMask wallet

  • Explore smart accounts and embedded wallets

    • Smart Accounts Kit

      Instantly onboard users through smart accounts portable with MetaMask, redesign gas, build with permissions-first delegations.

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    • Embedded Wallets

      Design supercharged on-chain experiences with Embedded Wallets — instant setup, minimal friction, endless customizability.

      Documentation
    Explore smart accounts and embedded wallets

  • Run dapps faster

    • Managed Nodes

      Scale your dapp with Infura’s industry-leading, cloud-based node services.

      Documentation
    • Platform APIs

      Simplify development and boost performance with the APIs powering MetaMask’s most popular features.

      Documentation
    Run dapps faster

  • Customize MetaMask for any dapp and protocol

    • Snaps

      Add new functionality for MetaMask, and add support for any protocol in EVM and non-EVM networks.

      Documentation
    Customize MetaMask for any dapp and protocol

Develop with MetaMask

A comprehensive set of developer tools, products and services for onboarding and engaging with MetaMask users.

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Try it out

Discover tutorials, workshops, and more.

Tutorials, video walkthroughs, and workshops—for developers, by developers

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Start building with a free Linea mainnet node

Deploy your smart contract on Linea’s EVM-equivalent L2 for free.

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Release notes

  • MetaMask Snaps

    View full note
    v157.0.0
    12 May 2026
    • Changed
      @metamask/snaps-controllers 20.0.5
      • Bump @metamask/snaps-rpc-methods from ^15.1.1 to 16.0.0 (#3999)
      • Bump @metamask/json-rpc-engine from ^10.3.0 to ^10.5.0 (#3992, #3998)
    • Changed
      @metamask/snaps-jest 10.1.3
      • Bump @metamask/snaps-rpc-methods from ^15.1.1 to 16.0.0 and handle breaking changes (#3968, #3987, #3993)
    • Changed
      @metamask/snaps-rpc-methods 16.0.0
      • BREAKING: Use messenger for permitted method implementations (#3987)
        • createSnapsMethodMiddleware now requires a messenger parameter.
        • createSnapsMethodMiddleware will throw if the expected hooks are not passed.
        • Most previously used method hooks are no longer required.
      • BREAKING: Use messenger for restricted method implementations (#3968)
        • buildSnapRestrictedMethodSpecifications now requires a messenger parameter.
        • Most previously used method hooks are no longer required.
      • BREAKING: Assert expected hooks for restricted method specifications (#3993)
        • buildSnapRestrictedMethodSpecifications will now throw if the expected hooks are not passed.
      • Bump @metamask/permission-controller 12.3.0 to ^13.1.0 (#3984, #3989)
      • Bump @metamask/json-rpc-engine from ^10.2.4 to ^10.5.0 (#3982,#3992, #3998)
      • Bump @metamask/messenger from ^1.1.1 to ^1.2.0 (#3981)
      Removed
      • BREAKING: selectHooks and permittedMethods are no longer exported (#3987)
        • A selectHooks implementation is exported from @metamask/json-rpc-engine if needed.
    • Fixed
      @metamask/snaps-sdk 11.1.1
      • Clarify return type for snap_getFile can be null (#3987)
    • Changed
      @metamask/snaps-simulation 4.1.4
      • Bump @metamask/snaps-rpc-methods from ^15.1.1 to 16.0.0 and handle breaking changes (#3968, #3987, #3993)
      • Bump @metamask/permission-controller 12.3.0 to ^13.1.0 (#3984, #3989)
      • Bump @metamask/json-rpc-engine from ^10.2.4 to ^10.5.0 (#3982,#3992, #3998)
      • Bump @metamask/messenger from ^1.1.1 to ^1.2.0 (#3981)
      • Bump @metamask/chain-agnostic-permission from ^1.5.0 to ^1.6.0 (#3997)

  • MetaMask SDK

    View full note
    v117.0.0
    25 March 2026
    • Changed
      @metamask/sdk 0.34.1
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
    • Changed
      @metamask/sdk-analytics 0.0.6
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
      • fix: missing export of esmodule on sdk-analytics (#1334)
    • Changed
      @metamask/sdk-communication-layer 0.33.2
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
    • Changed
      @metamask/sdk-install-modal-web 0.32.2
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
      • feat: adding mobile wallet protocol (#1346)
      • Release 110.0.0 (#1235)
    • Changed
      @metamask/multichain-sdk 0.0.1
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
    • Changed
      @metamask/sdk-multichain-ui 0.0.1
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
    • Changed
      @metamask/sdk-react 0.33.2
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
    • Changed
      @metamask/sdk-react-native 0.3.13
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.
      • refactor: replace qr-code-styling with smaller library (#1129)
    • Changed
      @metamask/sdk-react-ui 0.29.3
      • Mark the package as deprecated in the README and direct consumers to MetaMask Connect migration docs and successor packages.

  • Wallet / Multichain API

    View full note
    v0.14.0
    6 May 2025
    • Added
      • Add EIP-5792 methods: wallet_sendCalls, wallet_getCallsStatus, wallet_getCapabilities (#284)

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