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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

    Ver nota completa
    v113.0.0
    10 June 2025
    • Changed
      @metamask/snaps-cli 8.0.0
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
      • Bump minimum supported browser versions (#3441)
        • The minimum supported browser versions are now:
          • Chrome 113
          • Firefox 115
      • Bump @swc/core from 1.3.78 to 1.11.31 (#3442)
      • Bump swc-loader from 0.2.3 to 0.2.6 (#3442)
    • Changed
      @metamask/snaps-controllers 13.0.0
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
      • BREAKING: Refactor cronjob controller to reduce duplication (#3421)
        • The jobs state property was removed in favour of the events property, which now contains all background events and cronjobs.
        • CronjobController:schedule now expects a schedule field instead of date.
        • Some actions were renamed to remove the BackgroundEvent suffix:
          • CronjobController:scheduleBackgroundEvent -> CronjobController:schedule.
          • CronjobController:cancelBackgroundEvent -> CronjobController:cancel.
          • CronjobController:getBackgroundEvents -> CronjobController:get.
      Fixed
      • Log errors that cause a crash (#3443)
      • Recover from a crash more gracefully (#3440)
        • This resolves possible race conditions when sending requests to a Snap that is in the process of being stopped.
    • Changed
      @metamask/snaps-execution-environments 9.0.0
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
      • Bump ses from 1.12.0 to 1.13.0 (#3438)
    • Added
      @metamask/snaps-jest 9.0.0
      • Add support for onClientRequest (#3445)
      Changed
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
    • Changed
      @metamask/snaps-rpc-methods 13.0.0
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
      • BREAKING: Refactor background event methods to reduce duplication (#3421)
        • This requires @metamask/snaps-controllers version 13.0.0 or later.
    • Added
      @metamask/snaps-sdk 8.0.0
      • Support scheduling cronjobs with an ISO 8601 duration (#3421)
        • Instead of using a cron expression, you can now use a duration string to schedule a cronjob. This is useful for scheduling recurring events that are not based on a specific time of day.
        • To schedule a cronjob with a duration, use duration instead of expression in the Snap manifest.
      Changed
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
      Fixed
      • Allow AccountSelector in Field and add disabled prop. (#3430)
    • Added
      @metamask/snaps-simulation 3.0.0
      • Add support for onClientRequest (#3445)
      Changed
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
      • Bump @metamask/eth-json-rpc-middleware from 17.0.0 to 17.0.1 (#3427)
    • Added
      @metamask/snaps-utils 10.0.0
      • Support scheduling cronjobs with an ISO 8601 duration (#3421)
      Changed
      • BREAKING: Drop support for Node.js 18 and 21 (#3447)
      Fixed
      • Unwrap double-wrapped JSON-RPC errors (#3432)

  • MetaMask SDK

    Ver nota completa
    v114.0.0
    21 May 2025
    • Added
      @metamask/sdk 0.33.0
      • Add rpc ingore list to analytics (#1293)
      • Integrate sdk-analytics with SDK (#1289)
      Fixed
      • Updates and Fixes to Analytics (#1294)
    • Fixed
      @metamask/sdk-analytics 0.0.5
      • Updates and Fixes to Analytics (#1294)
    • Added
      @metamask/sdk-communication-layer 0.33.0
      • Add rpc ingore list to analytics (#1293)
      • Refactor: backwards compatible originator info (#1292)
      • Integrate sdk-analytics with SDK (#1289)
      Fixed
      • Updates and Fixes to Analytics (#1294)
    • Added
      @metamask/sdk-react 0.33.0
      • Add rpc ingore list to analytics (#1293)
      • Integrate sdk-analytics with SDK (#1289)
      Fixed
      • Updates and Fixes to Analytics (#1294)

  • Wallet / Multichain API

    Ver nota completa
    v0.14.0
    6 May 2025
    • Added
      • Add EIP-5792 methods: wallet_sendCalls, wallet_getCallsStatus, wallet_getCapabilities (#284)

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