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Adding a New Network to MetaMask - Blast Custom RPC

A step-by-step tutorial on how to add a network to MetaMask using a custom RPC endpoint and the Blast platform.

Prerequisites

  • MetaMask browser extension installed
  • Blast account already created
  • Project already created:
  • Endpoints already generated: More details to be found here: generating-your-own-endpoint-on-blast​
Once you have all the prerequisites prepared, you just need to follow the steps described below to add a custom RPC endpoint to your MetaMask.

Add custom RPC endpoint to MetaMask:

  1. 1.
    Open the Blast dashboard, go to an already created project, and choose a chain. For this tutorial, we have chosen to use the Polygon Mainnet endpoint.
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2. Grab the RPC endpoint URL and copy it to the clipboard.
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3. Now go to your MetaMask wallet, click on the network dropdown menu at the top, and select the Add network option at the bottom.
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4. Once you are in this section, fill in the fields with your network of choice’s information. Choose your desired network name - anything to remind you which chain you're connecting to. For the New RPC URL field, paste the previously copied endpoint URL and fill in the matching id and currency values.
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5. When you're done, your configuration should look something like this:
6. Once you have saved your configuration, the newly added network will be displayed at the top.