Explore MetaMask Delegation Toolkit today to build a new web3 user experience for your users

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

Start Building

Build your dapp using the same infrastructure and APIs powering web3's most popular open-source wallet.

MetaMask Wallet API

Enable your users to connect and interact with their MetaMask wallets

Documentation
EIP-6963
API Playground

MetaMask Snaps

Customize MetaMask with your own features and extend your reach millions of users.

Documentation
Tutorials
Discover Snaps

Infura APIs

Connect the infrastructure and APIs that support MetaMask

Gas API
Documentation
Getting Started
Faucet for Test ETH

Test and deploy with Linea

Deploy your smart contract on Linea's EVM-equivalent Layer 2 zk-rollup

Quickstart
Documentation
Wallet Setup
Test ETH Faucets
Linea Apps Ecosystem

Tutorials

Tutorials, workshops, and walkthroughs building web3 dapps, for developers, by developers.

Use the Gas API to estimate and optimize transaction fees

The Gas API powers Metamask’s Gas Estimation feature. Learn how you can add it to your build for superior UX, cost savings, or lightning-fast transactions.

Tutorial

Watch

What are Snaps? A Developer Into

Snaps allows you extend the functionality of MetaMask. This video will cover what APIs are available to you, and how they can be used.

Guide

Watch

How to create a MetaMask Snap

Get started with Snaps. In this video, you’ll learn how install MetaMask Flask, use our template, start development servers, and connect MetaMask to your own Snap.

Guide

Watch

Read the latest news

View all blogs

Explore the latest MetaMask news and announcements

Build and Deploy a Decentralized Crowdfunding Smart Contract on the Linea Feature image

Build and Deploy a Decentralized Crowdfunding Smart Contract on Linea

Learn how to build and deploy a decentralized crowdfunding smart contract on Linea.

Read

Revoke.Delegate: Automating Token Approval Revocation with MetaMask's Delegation Toolkit

Learn how Revoke.delegate automates token approval revocations to protect users during exploits.

Read

DIN 2024 Accomplishments

Discover DIN's transformative journey in 2024, from scaling to 50+ providers to processing 100M+ daily requests. Explore key milestones in decentralized architecture, partnerships, network growth, and community engagement.

Read

View all blogs