To add Sepolia to MetaMask, get the RPC URL from Alchemy dashboard, go to Networks on MetaMask, click Add Network, enter network details like Chain ID, currency symbol, and block explorer URL, and you will be connected to Sepolia for testing dapps.
About Sepolia Testnet
Sepolia is a PoS testnet created by the Ethereum Foundation to replace the now-retired Goerli testnet. It features:
- Proof-of-Stake consensus mechanism
- 15 second block times
- EVM compatibility for easy migration of dApps
- Faucets for getting test ETH
- Explorer support for easy debugging
Sepolia offers a robust public test environment for Ethereum developers to experiment and test applications before mainnet deployment.
Step-by-Step Guide to Add Sepolia to MetaMask
Follow these simple steps to add Sepolia to your MetaMask wallet:
Step 1: Sign Up for Alchemy
If you don’t have an Alchemy account, go to alchemy.com and create a free account. If you already have an account, log in.
Alchemy’s free tier provides Sepolia testnet support and gives developers access to full archive data, no daily request limits, and enhanced APIs.
Step 2: Create a Sepolia Application
From your Alchemy dashboard, click “Create App”. Give your app a name and description. Choose “Ethereum” as the blockchain and “Sepolia” as the network.
Step 3: Add Sepolia to MetaMask
There are two ways to add Sepolia to MetaMask using Alchemy – automatically with “Add to Wallet” button or manually.
Option 1: Automatically Add Sepolia
Open your newly created Sepolia app on Alchemy and click the “Add to Wallet” button. This will automatically add the RPC endpoint to MetaMask.
Allow access when prompted, and Sepolia testnet will be added to your wallet.
Option 2: Manually Add Sepolia
Open the MetaMask browser extension, click your profile picture, and go to Settings > Networks. Click “Add Network” at the bottom.
Return to your Alchemy dashboard, and click “View Key” to copy the Sepolia HTTPS URL.
Back in MetaMask, paste this URL in the “New RPC URL” field.
Enter other details:
- Network Name: Sepolia Testnet
- Chain ID: 11155111
- Currency Symbol: SepoliaETH
- Block Explorer URL: https://sepolia.etherscan.io/
Click Save to add Sepolia testnet to MetaMask.
List of dApps on Sepolia Testnet
Many Ethereum projects deploy their dApps to Sepolia testnet for public testing, including:
- Uniswap
- MakerDAO
- Aave
- Synthetix
- Balancer -Polygon
- 0x Protocol
- Bancor
- Kyber Network
Conclusion
Adding the Sepolia testnet to your MetaMask wallet provides an easy way to test Ethereum dApps securely. Sepolia offers a robust environment for experimenting with smart contracts and replicating mainnet scenarios before launching to production. Follow this guide to get started with dApp testing and development on Sepolia today.
FAQs:
How do I add arbitrum Sepolia to MetaMask?
To add Arbitrum Sepolia testnet to MetaMask, get the Arbitrum Sepolia RPC URL from an RPC provider like Alchemy. Then follow the same steps to add a custom network – enter network details like Chain ID, symbol, explorer URL and add Arbitrum Sepolia network to MetaMask.
How do I manually add Sepolia to MetaMask?
Go to Networks in MetaMask, click Add Network, enter details like Network Name as Sepolia, RPC URL from Alchemy, Chain ID as 11155111, Currency Symbol as SPI, and Block Explorer URL as https://sepolia.etherscan.io. Click Save to manually add Sepolia to MetaMask.
What is the RPC URL for Sepolia?
The RPC URL for Sepolia testnet will be unique for each project and can be obtained from blockchain API services like Alchemy. The format is https://eth-sepolia.alchemyapi.io/v2/<YOUR-ALCHEMY-API-KEY>.
