Connecting to Base
Documentation about Base Mainnet and Base Testnet. This page covers network information for the Base network, including network names, descriptions, RPC endpoints, chain IDs, currency symbols, and block explorers.
Base Mainnet
| Name | Value |
|---|---|
| Network Name | Base Mainnet |
| Description | The public mainnet for Base. |
| RPC Endpoint | https://mainnet.base.org Rate limited and not for production systems. |
| Chain ID | 8453 |
| Currency Symbol | ETH |
| Block Explorer | https://base.blockscout.com/ |
Base Testnet (Sepolia)
| Name | Value |
|---|---|
| Network Name | Base Sepolia |
| Description | A public testnet for Base. |
| RPC Endpoint | https://sepolia.base.org Rate limited and not for production systems. |
| Chain ID | 84532 |
| Currency Symbol | ETH |
| Block Explorer | https://sepolia-explorer.base.org |
L1 & L2 protocol and network-related smart contract deployments can be found on the Base Contracts page.
For production systems, we recommend using a node from one of our node partners, or running your own Base node.
Using Base with your wallet
Coinbase Wallet
The Coinbase Wallet browser extension provides support for Base by default.
To use Base with Coinbase Wallet:
- Open the Coinbase Wallet browser extension and log in to your account.
- Connect to an app using Coinbase Wallet.
- Open the network selection menu by clicking the network icon in the upper right-hand corner.
- Select Base.
Your active network should now be switched to Base.
Other wallets
Base can be added as a custom network to any EVM-compatible wallet (i.e. MetaMask).
MetaMask
To add Base as a custom network to MetaMask:
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Open the MetaMask browser extension.
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Open the network selection dropdown menu by clicking the dropdown button at the top of the extension.
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Click the Add network button.
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Click Add a network manually.
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In the Add a network manually dialog that appears, enter the following information for Base mainnet:
Name Value Network Name Base Mainnet Description The public mainnet for Base. RPC Endpoint https://mainnet.base.org Chain ID 8453 Currency Symbol ETH Block Explorer https://base.blockscout.com/ -
Tap the Save button to save Base as a network.
You should now be able to connect to the Base by selecting it from the network selection dropdown menu.
Testnet
Coinbase Wallet browser extension provides support for Base Sepolia testnet by default.
To use Base Sepolia with Coinbase Wallet:
- Open the Coinbase Wallet browser extension and log in to your account.
- Connect to an app using Coinbase Wallet.
- Open the network selection menu by clicking the network icon in the upper right-hand corner.
- Click the More networks button.
- Navigate to the Testnets tab.
- Select Base Sepolia.
Your active network should now be switched to Base testnet.
Other wallets
Base Sepolia can be added as a custom network to any EVM-compatible wallet (e.g., MetaMask).
MetaMask
To add Base Sepolia as a custom network in MetaMask:
-
Open the MetaMask browser extension.
-
Open the network selection dropdown menu by clicking the dropdown button at the top of the extension.
-
Click the Add network button.
-
Click Add a network manually.
-
In the Add a network manually dialog that appears, enter the following information for the Base Sepolia testnet:
Name Sepolia Network Name Base Sepolia RPC Endpoint https://sepolia.base.org Chain ID 84532 Currency Symbol ETH Block Explorer https://sepolia-explorer.base.org -
Tap the Save button to save Base Sepolia as a network.
You should now be able to connect to the Base testnet by selecting it from the network selection dropdown menu.