How to add a custom network

MetaMask lets you connect to many different networks. Before adding one manually, check whether it’s already supported by default.

Default networks

Ethereum • Linea • Base • Solana • Bitcoin • Polygon • BNB Chain • Arbitrum • OP • Sei • Avalanche • zkSync Era

Adding a popular network

On both Mobile and Extension, you can easily add several networks with just a click:

• Extension
• Mobile

1. Click on the menu in the top right and select 'Networks'.

2. Scroll down until you see the 'Additional networks' section and click 'Add' next to the network you wish to add.

Alternatively, you can also search for the network to add in the search bar.

1. Tap the networks dropdown at the top of the 'Tokens' tab.

2. Here you'll see a list of networks that you've already added. Scroll down to the 'Additional networks' section at the bottom of the screen.

3. Tap the '+' icon to add a network, and you'll be prompted to confirm your selection. All done!

Adding a network manually

If you don’t see a desired network in the list, you can follow these instructions to establish the network connection manually:

• Extension
• Mobile

1. Click on the menu in the top right and select 'Networks'. This will display a list of networks that you've added already.

2. Click 'Add a custom network'.

3. A screen will appear where you can enter the details of the network you wish to add. Click 'Save' to add the network.

1. Tap the networks dropdown at the top of the 'Tokens' tab.

2. Switch to the 'Custom' tab.

3. Tap on 'Add a custom network'.

4. Fill in the network's details:

After performing the above steps, you can see the custom network in the network selector.

Adding or editing RPC URLs

The initialism RPC stands for remote procedure call, a set of protocols that allow a client (such as MetaMask) to interact with a blockchain. You can add multiple RPC URLs for a single network and edit the default RPC URL from your list of networks in both Extension and Mobile settings.

note

Adding a custom RPC URL to Ethereum, Linea, Base, Arbitrum, or BNB Smart Chain RPC will disable Smart Transaction capabilities like MEV protection. To re-enable this, you'll need to switch back to the default RPC URL from network settings.

• Extension
• Mobile

1. Click on the menu in the top right and select 'Networks'.

2. Locate the desired network you want to edit and click the 3 dots to edit.

3. Select the Default RPC URL dropdown field and click “Add RPC URL”.

4. Enter the URL, nickname, and save your configurations.

1. Tap the networks dropdown at the top of the 'Tokens' tab.

2. Click the 3 dots by the network you want to edit and tap "Edit".

3. Select the RPC URL dropdown field and click “Add RPC URL”.

4. Enter the URL, nickname, and click “Save” to save your configurations.

You can now toggle between various RPC URLs when you want to switch providers. To delete any RPC URL, follow the same steps above and click on the trash bin icon to delete.

Networks across devices

Adding a network on one device does not mean it will appear on another device when accessing the same account. If you add it on Extension, it will not automatically be added to your MetaMask Mobile app yet, and vice versa.

Custom networks will also need to be re-added if you uninstall the browser extension or mobile app (after which you'd need to restore your wallet using your Secret Recovery Phrase).

Adding via Chainlist

Please note we do not maintain the network information on Chainlist. Make sure the network details are accurate before adding them.

For another way of adding networks to MetaMask, go to chainid.network, where you can connect MetaMask and add networks with a few clicks.

• Extension
• Mobile

1. Head to the Chainlist site at chainid.network.

2. Firstly, you'll need to connect your MetaMask to the site. Select 'Connect' in the top right to do so.

When successful, the address of our selected account will replace the 'Connect' button:

3. Now use the search bar to find the network you want to connect to. Once you've found it, click the button 'Add Chain'.

4. MetaMask itself will now spring into action, and will present you with an approval menu. Click 'Confirm' to proceed.

1. Head to the Chainlist site using the MetaMask in-app browser.

When you're in the browser, you can either tap the address in the menu bar at the top and navigate to https://chainid.network or hit the magnifying glass in the toolbar at the bottom and search from there.

2. On Chainlist, you need to connect your MetaMask. Your currently selected account will be the one that's automatically connected, though you can easily swap by going back to your wallet view, changing the account, and heading back to Chainlist in the browser to connect.

When your wallet is connected, the selected account address will be displayed where the 'Connect' button was.

3. Next, find the network you want to connect to by searching. When you find the network, hit 'Add Chain':

4. Now you'll just need to approve the addition of the network.