How to add a polygon array to MetaMask

If you’re reading this guide, chances are you’ve just finished installing the MetaMask wallet extension on your web browser or the MetaMask app on your smartphone. If not, check out this guide on how to get started with MetaMask. Maybe you want to create NFTs on OpenSea using Polygon, hold, transfer, and receive MATIC tokens in MetaMask, or trade MATIC with other tokens at low transaction fees.

This article provides step-by-step guides on how to add Polygon to MetaMask via Polygonscan and manually via MetaMask. Additionally, we’ll show you how to add MATIC tokens to MetaMask. Keep reading to learn more.

How to add a polygon to MetaMask: step by step guide

If you are using a web browser, you can add Polygon to MetaMask via Polygonscan or manually via MetaMask.

Adding Polygon to MetaMask via Polygonscan

Below are three basic steps to add Polygon Network to MetaMask using Polygonscan.

Step 1: Open Polygonscan

Visit the Polygonscan website.

Basically, Polygonscan is a blockchain explorer for Polygon, just like Etherscan for Ethereum. As such, you can view Polygon addresses, tokens, transactions, and more.

Step 2: Tap the “Add Network” button

On the Polygonscan page, scroll to the lower right corner. You will see a button labeled “Add Polygon Array” next to a MetaMask icon.

Polygonscan website

Now, before hitting the “Add Polygon Array” button, make sure to log into your MetaMask account.

Step 3: Confirm connection request

Since MetaMask connects to various dApps, anyone with your address can try to log into your account. For this reason, MetaMask asks users to personally confirm all login requests.

A small MetaMask window will appear. Click the “Approve” tab to confirm the connection request.

approve polygon analysis on metamask

This is how you add Polygon to MetaMask using Polygonscan.

Manually adding a polygon to MetaMask

This alternative involves four basic steps:

Step 1: Open MetaMask

Open your MetaMask wallet by clicking on the MetaMask icon at the top right of your browser.

chrome metamask extension icon

Log in by entering your login information.

Step 2: Click on the “Add network” tab

After logging into your wallet, visit the network selection button at the top. Generally, Ethereum is the default network for MetaMask.

Tap on the tab labeled “Ethereum Mainnet” and click on “Add Network”.

add a network metamask

After clicking on the “Add network” button, a new browser will open.

Step 3: Manually enter polygon network details

The new window that opened above contains five empty fields, namely: Network Name, New RPC URL, Chain ID, Currency Symbol, and Blockchain Explorer URL.

metamask add network

Enter the details below in their respective fields:

  • The name of the network – Polygon Mainnet

  • The new RPC URL –

  • Channel ID – 137

  • Currency symbol – MATIC

  • Blockchain Explorer URL (optional) –

Pro tip: Since you can easily make mistakes typing details into fields, it’s a good idea to copy and paste them one by one into their respective fields.

Step 4: Click the “Save” button

Once you have filled in the details appropriately, the “Save” button at the bottom will turn blue. Click on it to save your entries and therefore add the Polygon network to MetaMask.

metamask add blockchain network polygon

Also, your Mainnet network will read Polygon Mainnet.

You can switch between networks by clicking on your main Network menu.

Adding a polygon to the MetaMask mobile app

Adding Polygon to a MetaMask mobile app is slightly different from browser extension. In addition, Polygonscan does not have the possibility to link the network via the explorer. Here’s how to accompany it:

Step 1: Open your MetaMask application

Log in to your MetaMask app. You can download the app from Google Play Store if you don’t have it.

Step 2: Visit the Settings section

After logging into your account, click on the three dashes at the top left of your screen.

You will see the “Settings” section in the lower half of your screen.

Click on it to open a new window.

Step 3: Add a network

Scribble down and tap on the “Networks” menu.

Click “Add Network” and then “Custom Networks” to add the Polygon network.

Again, you will see five fields.

custom network metamask

Enter the details below in their respective fields:

  • The name of the network – Polygon Mainnet

  • The new RPC URL –

  • Channel ID – 137

  • Currency symbol – MATIC

  • Blockchain Explorer URL (optional) –

Step 4: Save Changes

After entering the above details, the “Add” button at the bottom of the screen will turn blue.

Click on it to add Polygon to your portfolio.

That’s it!

Now that you have successfully added Polygon to MetaMask, you need MATIC tokens to power on-chain transactions. Let’s take a quick look at how to add MATIC tokens to your MetaMask wallet.

How to add MATIC tokens to MetaMask

MATIC is the native currency of the Polygon blockchain. You must hold tokens in your wallet to pay transaction fees.

To add MATIC tokens to MetaMask, simply copy your MATIC address from your MetaMask wallet and use it to receive funds. However, you must manually add any custom Polygon network tokens for them to appear in the MetaMask Asset section.

Here’s how:

Visit Polygonscan to copy the contract address of the token you want to add. If the token is not yet listed on Polygonscan, you can get its contract from the project website, social media accounts or CoinGecko.

Go to your MetaMask wallet and click on the “Import Tokens” tab.

import a token on the metamask

Paste the contract you copied earlier into “Token Contract Address”. The MetaMask engine automatically fills in the “Token Symbol” and “Token Decimal” fields.

symbolic contract address

Click “Add Custom Token” and then “Import Tokens” in the next window to complete adding the custom token to your MetaMask wallet. But remember that you must first fund your wallet by sending MATIC or other custom tokens from the Polygon network before adding them to your MetaMask wallet.

Good experience of the Polygon network!

Josiah Makori

Josiah Makori

Josiah is a technology evangelist passionate about helping the world understand Blockchain, Crypto, NFT, DeFi, Tokenization, Fintech, and Web3 concepts. His hobbies are listening to music and playing football. Follow the author on Twitter @TechWriting001

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