How to Add Polygon Mumbai to MetaMask

As outlined above, the Polygon Mumbai Testnet network is compatible with MetaMask Wallets and easily accessible through the ChainList app. Chainlist is a platform built by the Defillama team that is a large collection of EVM networks and their Chain ID, Network ID and RPCs to ensure that users can easily connect to the verified chain.

Here is a simple guide to connect to the Polygon Mumbai Testnet with Chainlist:

  1. Visit the ChainList website and connect your MetaMask Wallet.
  2. Select the 'Include Testnets' checkbox.
  3. Search for "Polygon Mumbai" in the 'Search Networks' tab.
  4. Find the Polygon Mumbai network you want to connect to and click 'Add to MetaMask'. It will be automatically added to your wallet.
Add Mumbai to MetaMask

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Polygon Testnet (Mumbai) Details

If you are interested in adding the Polygon Mumbai testnet manually, here are the fields you will need to add to your MetaMask:

  • Network Name: Mumbai
  • New RPC URL: https://polygon-mumbai.infura.io/v3/4458cf4d1689497b9a38b1d6bbf05e78
  • Chain ID: 80001
  • Currency Symbol: MATIC
  • Block Explorer URL: https://mumbai.polygonscan.com

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What is Polygon Mumbai?

The Polygon Mumbai Testnet is a test network created by the Polygon (previously Matic Network) team to provide developers with a sandbox environment to test their applications on the Polygon network. It is designed to be a replica of the Polygon mainnet, allowing developers to test and deploy their applications in a real-world-like environment before releasing them to the production network.

The Mumbai Testnet is an Ethereum-compatible test network that uses the Proof of Authority (PoA) consensus mechanism, which is fast and efficient for testing purposes. It also provides a number of developer-friendly tools and services, including a block explorer, RPC endpoints, and a faucet to obtain testnet tokens for testing purposes.

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Bottom Line

In this guide, we have outlined two ways to add the Polygon Testnet (Mumbai) to your MetaMask wallet. Based on our experience, we recommend users go through ChainList to avoid manual entry mistakes when trying to input the RPC and Chain ID information through MetaMask.  With the right information, users can easily connect to Polygon's Mumbai testnet and begin testing their applications without any hassle.

We hope this guide has been useful to you and we wish you all the best on your journey with Polygon. Good luck!