Connecting to Base

Connect to Base Mainnet or the Sepolia testnet using the public RPC endpoints, then configure any EVM-compatible wallet to use the network.

Base Mainnet

Name	Value
Network Name	Base Mainnet
Description	The public mainnet for Base.
RPC Endpoint	https://mainnet.base.org — rate limited, not for production.
Flashblocks RPC Endpoint	https://mainnet-preconf.base.org — rate limited, not for production.
Chain ID	8453
Currency Symbol	ETH
Block Explorer	https://base.blockscout.com/

Base Testnet (Sepolia)

Name	Value
Network Name	Base Sepolia
Description	The public testnet for Base.
RPC Endpoint	https://sepolia.base.org — rate limited, not for production.
Flashblocks RPC Endpoint	https://sepolia-preconf.base.org — rate limited, not for production.
Chain ID	84532
Currency Symbol	ETH
Block Explorer	https://sepolia-explorer.base.org

Note

Protocol and network smart contract deployments for L1 and L2 are catalogued on the Base Contracts page.

Tip

Production workloads should connect through one of the node providers or run a Base node directly.

Using Base with your wallet

Coinbase Wallet

The Coinbase Wallet browser extension supports Base out of the box.

To switch to Base in Coinbase Wallet:

1. Open the Coinbase Wallet extension and sign in.
2. Connect to an app from within the wallet.
3. Click the network icon in the top right to open the network menu.
4. Choose Base.

The active network now points at Base.

Other wallets

Base works as a custom network in any EVM-compatible wallet, including MetaMask.

MetaMask

To add Base as a custom network in MetaMask:

1. Open the MetaMask extension.

2. Click the network dropdown at the top of the extension.

3. Click Add network.

4. Click Add a network manually.

5. Enter the Base mainnet values:

   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/

6. Click Save.

Base now appears in the network dropdown.

Testnet

Coinbase Wallet supports Base Sepolia by default

To use Base Sepolia in Coinbase Wallet:

1. Open the Coinbase Wallet extension and sign in.
2. Connect to an app.
3. Click the network icon at the top right.
4. Click More networks.
5. Open the Testnets tab.
6. Choose Base Sepolia.

The active network is now the Base testnet.

Other wallets

Base Sepolia can also be added as a custom network in any EVM-compatible wallet such as MetaMask.

MetaMask

To add Base Sepolia in MetaMask:

1. Open the MetaMask extension.

2. Click the network dropdown.

3. Click Add network.

4. Click Add a network manually.

5. Enter the Base Sepolia values:

   Name	Value
   Network Name	Base Sepolia
   RPC Endpoint	https://sepolia.base.org
   Chain ID	84532
   Currency Symbol	ETH
   Block Explorer	https://sepolia-explorer.base.org

6. Click Save.

Base Sepolia is now selectable from the network dropdown.