How to add a custom network RPC

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There are now many EVM-compatible networks you can use with MetaMask, all of which must be added to your wallet before you can use them with your existing account. 

The initialism RPC stands for remote procedure call, a set of protocols that allow a client (such as MetaMask) to interact with a blockchain. Without going off on a significant technical tangent, adding network details using the process below allows MetaMask to connect to the chosen network, and, in turn, lets you interact with that network.

Adding via Chainlist

For an easy way of adding networks to MetaMask, go to chainlist.wtf, where you can connect your MetaMask and add networks with only a few clicks. See our guide for more information. 

Also, please note that 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, and vice versa.

Custom networks will also need to 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 popular networks

With Mobile v5.3.0, we added a feature that allows you to add one of several popular networks without having to input any details. These networks include:

  • BNB Chain/BSC
  • Polygon
  • Avalanche
  • Arbitrum
  • Optimism
  • Palm 
  • Fantom 
  • Harmony.

You can find this menu using the following steps:

  1. Tap the hamburger icon in the top-left of the screen.
  2. Go to 'Settings', and then to 'Networks'.
  3. Here you'll see a list of networks that you've already added. Tap the 'Add Network' button at the bottom of the screen. 

    settings___network.PNG

  4. You should now see a list of networks you can add under the 'Popular' tab, as shown below.

    select_a_network.jpg

  5. When you choose to add one of them, you'll be prompted to confirm:

    add_network_.PNG

    And then you'll get the option to switch immediately to that network. All done!

    switch_to_network.jpg

This feature will also be added to Extension soon.

Adding a network manually

The following are instructions for establishing these connections manually:

Extension Mobile
  1. Click on the network selector button. This will display a list of networks to which you're already connected:

    networks_button.png

  2. Click 'Add network':

    add_network.png

  3. A new browser tab will open, displaying various fields to fill out:

    Screenshot_2022-02-10_at_10.08.31.png

    Complete the fields and click save to add the network. 

    The details for the above fields can be found in our network profiles or, alternatively, docs (i.e. developer documentation) or how-to guides for each network. For example:

    After performing the above steps, you will be able to see the custom network the next time you access the network selector.

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