How to Add Sepolia to MetaMask

Summary: You can add Sepolia to MetaMask by manually entering the network's RPC details or using ChainList, a trusted aggregator of network information, for automatic setup.

Sepolia is an Ethereum proof-of-stake testnet, allowing developers to test smart contracts and dApps in a mainnet-like environment, making it a reliable tool for efficient development.

ChainList Overview
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ChainList Overview
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ChainList is the most trusted aggregator of EVM-based Layer 1 and 2 networks. It allows users to instantly connect their MetaMask to verified Chain and Network IDs, ensuring a safe connection.

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Supported Networks

100+ Layer 1 and Layer 2 chains

Development Team

Built by the Defillama team

Compatible Wallets

MetaMask only

Can I Add Sepolia to MetaMask?

Yes, you can add Sepolia to MetaMask. Sepolia is an Ethereum Proof-of-Stake testnet used for testing smart contracts and dApps before deploying on mainnet. To connect, simply go to MetaMask’s “Networks” section, enter Sepolia’s RPC URL, chain ID, and other necessary details. Once set up, you can interact with the Sepolia network through MetaMask as you would with any other network.

How to Add Sepolia to MetaMask

You can easily add Sepolia to MetaMask through ChainList, a platform that simplifies adding EVM-based networks. It automatically pulls the correct network settings, reducing manual input and avoiding errors.

Here’s how to connect Sepolia to MetaMask using ChainList:

  1. Visit ChainList: Head to the ChainList website.
  2. Connect MetaMask: Sync your MetaMask wallet to the site.
  3. Find Sepolia: Search for "Sepolia" in ChainList's search bar.
  4. Add Sepolia: Click “Add to MetaMask,” and the necessary RPC details will automatically configure.
Add Sepolia to MetaMask

Sepolia Testnet RPC Details

To connect MetaMask or any Web3 wallet to the Sepolia Testnet, you’ll need to input specific RPC details. Here are the key settings required, which we sourced from the Sepolia documentation:

  • Network Name: Sepolia
  • RPC URL: https://eth-sepolia.g.alchemy.com/v2/demo
  • Chain ID: 11155111
  • Currency Symbol: ETH
  • Block Explorer URL: https://sepolia.etherscan.io

Use these settings to manually configure your wallet and interact with the Sepolia Testnet. For the latest updates, always refer to the official Sepolia documentation.

About Sepolia

Sepolia is a proof-of-stake Ethereum testnet created for developers to test smart contracts and dApps in a mainnet-like environment. Launched in 2021, it uses a permissioned validator set, making it fast to sync and less storage-intensive. Its uncapped supply of testnet ETH ensures developers have ongoing access to tokens, making Sepolia ideal for efficient Ethereum development.

Sepolia

Bottom Line

In summary, adding Sepolia to MetaMask is a straightforward process that allows developers to test smart contracts and dApps in a controlled environment. Whether done manually with RPC details or through platforms like ChainList, connecting to Sepolia is quick and ensures access to an Ethereum-like testnet.

This makes it an excellent choice for developers looking to efficiently test and refine their projects before deploying on the mainnet.