How to Add opBNB to MetaMask

opBNB is a Layer 2 scaling solution built on the BNB Chain using Optimism’s OP Stack. It enables faster and cheaper transactions for users while remaining compatible with the Ethereum Virtual Machine (EVM). To interact with dApps or tokens on opBNB, you’ll first need to add the opBNB network to MetaMask. This guide walks you through the process in just a few steps.

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How to Add opBNB to MetaMask

What Is opBNB?

opBNB is a Layer 2 blockchain built using the OP Stack, a modular and open-source framework created by Optimism. While the OP Stack was originally designed for Ethereum, opBNB adapts it to work with the BNB Smart Chain (BSC) ecosystem.

Here’s what makes opBNB notable:

  • Built on the OP Stack from Optimism
  • Optimized for BNB Chain, not Ethereum
  • Low gas fees and fast transactions
  • EVM-compatible, meaning you can use MetaMask and familiar dApps

opBNB is designed to scale BNB Chain by offloading traffic to a faster, cheaper Layer 2 environment.

How to Add opBNB to MetaMask

Follow these steps to manually add the opBNB network to your MetaMask wallet:

  1. Open MetaMask
    Click on the MetaMask browser extension or app and log in.
  2. Open the Network Dropdown
    At the top of MetaMask, click the current network name (e.g., “Ethereum Mainnet”).
  3. Click “Add Network”
    On desktop, you’ll find this option at the bottom of the dropdown. On mobile, go to “Settings” > “Networks” > “Add Network.”
  4. Enter the Following Network Details:
  5. Click “Save”
    MetaMask will automatically switch to the opBNB network once added.

✅ You’re now connected to opBNB!

Alternative Method: Use Chainlist

For a quicker setup, you can use Chainlist, a verified network directory.

  1. Go to chainlist.org
    (Always confirm the URL is correct.)
  2. Search for “opBNB”
    Use the search bar to find the opBNB mainnet.
  3. Click “Add to MetaMask.”
    Chainlist will prompt MetaMask to add the network.
  4. Approve in MetaMask
    Review and confirm the network details before approving.

This method is easy and reduces the chance of input errors.

What to Do After Adding opBNB

Once opBNB is connected in MetaMask, you can begin interacting with the ecosystem.

  • Bridge Funds
    Use the official BNB Chain bridge to transfer BNB or other tokens from BSC to opBNB.
  • Explore dApps on opBNB
    Check out decentralized exchanges (DEXs), games, or NFT marketplaces designed to run on opBNB’s fast and low-cost infrastructure.
  • Stay Updated
    Follow the opBNB ecosystem for news about new projects, farming opportunities, and integrations.

Adding opBNB to MetaMask is a simple process that opens up access to a growing Layer 2 ecosystem built on the BNB Chain. Whether you’re exploring dApps, trading tokens, or trying new Web3 games, opBNB makes your experience faster and cheaper.

✅ Always use trusted RPC URLs and official resources
✅ Double-check any prompts before approving transactions

You’re now ready to explore what opBNB has to offer!