⚠️ You're viewing our website for the United Kingdom, but it looks like you're in the United States.

GET STARTED
GET STARTED

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

GET STARTED
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.

      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.

GET STARTED
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
Try it out

Discover tutorials, workshops, and more.

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

WATCH MORE

Start building with a free Linea mainnet node

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

GET STARTED
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70

Release notes

  • MetaMask Snaps

    View full note
    v139.0.0
    22 January 2026
    • Added
      @metamask/multichain-provider-example-snap 1.0.0
      • Initial release (#3813)
    • Added
      @metamask/snaps-cli 8.4.0
      • Add --manifest option for custom manifests (#3793, #3811)
        • This is currently only supported for the watch command, and build command for preinstalled Snaps (when used with the --preinstalled flag).
      • Allow manifest to extend another manifest (#3802)
        • For example, you could have a snap.manifest.json file with common fields, and a snap.manifest.dev.json file that extends it with development-specific fields:
          // snap.manifest.json
{
  "version": "1.0.0",
  "proposedName": "My Snap",
  "initialPermissions": {
    "endowment:network-access": {}
  }
}
          and
          // snap.manifest.dev.json
{
  "extends": "./snap.manifest.json",
  "proposedName": "My Snap (development)",
  "initialConnections": {
    "https://localhost:8000": {}
  }
}
          When running mm-snap watch --manifest snap.manifest.dev.json, the resulting manifest will combine the fields from both files.
      • Add --preinstalled flag to build command to create preinstalled Snap bundle (#3805)
    • Added
      @metamask/snaps-execution-environments 10.4.0
      • Add Multichain API support (#3759)
      Changed
      • Bump @metamask/json-rpc-engine from 10.2.0 to 10.2.1 (#3804)
      • Bump @metamask/utils from 11.8.1 to 11.9.0 (#3783)
    • Added
      @metamask/snaps-jest 10.0.0
      • Add Multichain API support (#3759)
      Changed
      • BREAKING: Change default account used by account and asset selector (#3759)
        • The AccountSelector and AssetSelector now use the first account of default secret recovery phrase by default.
    • Changed
      @metamask/snaps-rollup-plugin 5.0.1
      • Bump @metamask/snaps-utils from 11.7.1 to 12.0.0 (#3793)
    • Added
      @metamask/snaps-rpc-methods 14.2.0
      • Add Multichain API support (#3759)
      Changed
      • Bump @metamask/json-rpc-engine from 10.2.0 to 10.2.1 (#3804)
      • Bump @metamask/permission-controller from 12.1.0 to 12.2.0 (#3746, #3791)
      • Bump @metamask/utils from 11.8.1 to 11.9.0 (#3783)
      Fixed
      • Prevent concurrent wallet_requestSnaps requests (#3800)
    • Added
      @metamask/snaps-sdk 10.4.0
      • Add Multichain API support (#3759)
      Changed
      • Bump @metamask/utils from 11.8.1 to 11.9.0 (#3783)
    • Added
      @metamask/snaps-simulation 4.0.0
      • Add Multichain API support (#3759)
      Changed
      • BREAKING: Change default account used by account and asset selector (#3759)
        • The AccountSelector and AssetSelector now use the first account of default secret recovery phrase by default.
      • Bump @metamask/json-rpc-engine from 10.2.0 to 10.2.1 (#3804)
    • Added
      @metamask/snaps-utils 12.0.0
      • Add loadManifest function to load extendable manifests (#3793)
      Changed
      • BREAKING: Allow manifest to extend another manifest (#3802)
        • checkManifest now returns ExtendableSnapFiles, containing a manifest that may extend another manifest.
      • BREAKING: Require path to manifest instead of directory in checkManifest function (#3793)
    • Changed
      @metamask/snaps-webpack-plugin 5.1.2
      • Bump @metamask/snaps-utils from 11.7.1 to 12.0.0 (#3793)
    • Added
      @metamask/test-snaps 3.4.0
      • Add multichain provider example (#3759)
      Changed
      • Use latest versions of example Snaps (#3813)

  • MetaMask SDK

    View full note
    v116.0.0
    13 November 2025
    • Added
      @metamask/sdk 0.34.0
      • Introduces a new hideReturnToAppNotification option (default false) and passes it through to deeplink/QR URLs (#1350)

  • Wallet / Multichain API

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

Join our community

All Events
Sign up toreceive updates