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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

    • Delegation Toolkit

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

      Sign up for waitlist
    • 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
    v131.0.0
    6 November 2025
    • Fixed
      @metamask/preinstalled-example-snap 0.7.2
      • Prevent race condition (#3725)
    • Added
      @metamask/snaps-controllers 16.1.0
      • Add NPM proxy support (#3695)
      Changed
      • Bump @metamask/permission-controller from 12.0.0 to 12.1.0 (#3714)
      • Bump @metamask/phishing-controller from 13.1.0 to 15.0.0 (#3707)
      Removed
      • Remove logic for granting CAIP-25 permissions (#3723)
      Fixed
      • Prevent initial connections from being revoked as unused on update (#3729)
      • Keep dynamic permissions on update (#3726)
    • Fixed
      @metamask/snaps-execution-environments 10.2.3
      • Input change events in onUserInput now accepts null values (#3722)
    • Changed
      @metamask/snaps-rpc-methods 14.1.0
      • Include client and platform versions in snap_getClientStatus (#3724)
      • Bump @metamask/permission-controller from 12.0.0 to 12.1.0 (#3714)
    • Changed
      @metamask/snaps-sdk 10.1.0
      • Include client and platform versions in snap_getClientStatus (#3724)
      Fixed
      • Input change events in onUserInput now accepts null values (#3722)

  • MetaMask SDK

    View full note
    v115.0.0
    10 September 2025
    • Fixed
      @metamask/sdk 0.33.1
      • chore: pin debug package to 4.3.4 due to npm compromise (#1342)
    • Fixed
      @metamask/sdk-communication-layer 0.33.1
      • chore: pin debug package to 4.3.4 due to npm compromise (#1342)
    • Fixed
      @metamask/sdk-react 0.33.1
      • chore: pin debug package to 4.3.4 due to npm compromise (#1342)

  • 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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