Add Sepolia to MetaMask

Add Sepolia to MetaMask

In this guide, we outline the safest way to add the Sepolia Testnet Chain ID and RPC to your MetaMask Wallet. Get started in seconds with the verified details.

Summary: The Sepolia Ethereum Testnet can be added to your MetaMask Wallet with the verified Chain ID (11155111) and RPC endpoints. The fastest way to connect is by using the Chainlist app, which is an EVM mainnet and testnet information aggregator that allows users to quickly add networks to their MetaMask wallets.

Continue reading the guide below for a step-by-step guide to get started.

Content Guide

How to Add Sepolia to MetaMask

The fastest way to add the verified RPC and Chain ID information to connect to the Sepolia Testnet is via Chainlist. Chainlist is an EVM information aggregator that was deployed and is maintained by the team behind Defillama.

You can connect to the Sepolia Testnet in 3 simple steps with this guide:

  1. Connect your MetaMask Wallet to ChainList.
  2. Use the search bar at the top of the page to find 'Sepolia'.
  3. Click on the 'Add to MetaMask' button, and the verified RPC information will be automatically added to your extension.
Add Sepolia to MetaMask

What is Sepolia?

Sepolia is one of the Ethereum testnets, which is a version of the Ethereum network specifically designed for developers to test and experiment with their smart contracts and decentralized applications (dApps) before deploying them on the main Ethereum network.

By connecting to the testnet, developers can safely run tests and deploy contracts without using any real-world funds. This also allows them to easily debug any issues that may arise before eventually deploying on the mainnet. Sepolia is a very popular testnet as it’s extremely fast and reliable, making it ideal for conducting experiments and testing scenarios.

How do I get Sepolia Testnet ETH?

To get Sepolia Testnet ETH, you will need to use a Sepolia Testnet faucet, which is a service that allows developers to request a small amount of testnet ETH to use for testing purposes. You can then use these testnet tokens to test and experiment with your dApps and smart contracts on the Sepolia Testnet without incurring any actual costs or risks associated with the main Ethereum network.

Bottom Line

The Sepolia Testnet enables developers to test dApps and smart contracts on a simulated Ethereum network, mitigating costs and risks. Connect via MetaMask using Chainlist provided Chain ID and RPC details, obtain testnet ETH through a faucet, and refine applications to avoid expensive errors and security vulnerabilities.

Frequently Asked Questions

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