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Bware Labs

Optimism support added in Blast!

How to create an Optimism API endpoint

You can now generate Optimism endpoints in Blast! If you’re a builder interested in Optimism, you now have an easier way to interact with this low-cost and lighting fast Ethereum L2: Use Blast to generate dedicated endpoints and keep building!

How to generate a dedicated Optimism API endpoint in Blast

  1. Go to
  2. Press on Get endpoint or Connect
  3. If you never used Blast before:
  4. Connect with your Metamask wallet and follow the steps on-screen
  5. Sign the Metamask pop-up to login
  6. Create a project to be able to generate endpoints or use one of the projects you have already created
  7. Inside the project space, go to Available endpoints and select Optimism
  8. Select Mainnet and press Activate to create the endpoint
  9. You now have your own Optimism mainnet endpoint!
  10. Click on it to see the RPC and WSS addresses, which you can copy and use in your projects!


How to use the Optimism Public API in Metamask

  1. Go to
  2. Press on “Add to MetaMask”

Now, your Metamask wallet for Optimism will use the Blast Public Api, instead of the default one!

What is Optimism

Optimism is an Ethereum Layer 2 scaling solution designed to be low-cost and lightning fast. They provide scalable and decentralized infrastructure in order to fund their mission of scaling Ethereum’s technology and values.

Their protocol, an optimistic rollup, leverages the consensus and security of the parent blockchain (in this case, Ethereum) while providing near instantaneous transaction confirmation and much lower gas fees.

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