MetaMask is a simple and easy way to connect crypto to a wallet linked directly to Ethereum’s mainnet and any EVM-compatible chain.

To add Polygon network to MetaMask, you’ll need the custom RPC URL, chain ID, and Network Name.

Still haven’t setup your wallet? check our blog on installing and setting up metamask wallet

Configuring Polygon Network into MetaMask

1. Open the Metamask application or extension, click on “Ethereum Mainnet”.

2. Click “add network” on the popup

3. Use the following details to add the Polygon network to Metamask.

New RPC URL (Choose one of the following):

• https://polygon-rpc.com
• https://rpc-mainnet.matic.network
• https://rpc-mainnet.maticvigil.com
• https://rpc-mainnet.matic.quiknode.pro

ChainID: 137

Symbol: MATIC

Block Explorer URL: https://polygonscan.com

4. Click “save” and you are done.

What Can You Do After Connecting MetaMask to the Polygon Network?

Connecting your MetaMask wallet to Polygon opens up a world of fast, low-cost blockchain interactions. Beyond simply holding MATIC, you can leverage the network in ways that make your crypto experience more dynamic and versatile.

1. Participate in Micro-Transactions

Polygon’s low fees make it ideal for small, frequent transactions that would be costly on Ethereum. You can:

• Tip content creators or fund projects using small amounts of crypto
• Experiment with on-chain social applications that require frequent interactions
• Pay for digital services or subscriptions that accept Polygon payments

2. Access Innovative dApps

Polygon hosts a variety of decentralized applications beyond typical DeFi or NFT platforms:

• Launch and test your own smart contracts or token projects in a cost-efficient environment
• Use Polygon-based prediction markets or social dApps
• Participate in decentralized identity solutions or web3 productivity tools

3. Earn Passive Rewards

Besides traditional staking, Polygon enables new ways to generate passive income:

• Participate in liquidity mining programs unique to Polygon projects
• Lend assets on emerging Polygon lending protocols with competitive APYs
• Earn rewards in new tokens that are only available on Polygon-compatible platforms

4. Explore Digital Collectibles and Gamified Experiences

Polygon supports gamified blockchain experiences that go beyond traditional NFTs:

• Collect in-game assets, achievements, or badges in web3 gaming ecosystems
• Participate in virtual events like Decentraland, tournaments, or challenges with tokenized rewards
• Access experimental art and media platforms where you can trade or support creators

5. Experiment with Cross-Chain Innovation

Polygon’s bridges make experimentation safer and more cost-effective:

• Move assets between Polygon and other Layer-2 or Layer-1 networks
• Test new dApps or token strategies without paying high Ethereum gas fees
• Interact with multi-chain DeFi strategies that require quick transfers

06 Security Best Practices for MetaMask and Polygon

Using MetaMask to interact with the Polygon network opens exciting possibilities in crypto, but it also requires vigilance. Following strong security practices ensures your assets remain safe.

1. Safeguard Your Seed Phrase

• Never share your 12- or 24-word seed phrase with anyone.
• Store it offline in a secure location, like a hardware wallet backup or a fireproof safe.
• Avoid taking photos or storing it digitally to prevent hacks.

2. Use Hardware Wallets for Large Funds

• If you manage significant amounts of crypto, connect MetaMask to a hardware wallet.
• Hardware wallets keep your private keys offline, greatly reducing exposure to malware or phishing attacks.

3. Verify RPC URLs

• Only use official RPC URLs when adding the Polygon network manually.
• Avoid copying RPC endpoints from untrusted sources, as malicious URLs could compromise your transactions.

4. Double-Check Transactions

• Always confirm the recipient address, network, and token type before sending funds.
• Start with a small test transaction when sending to a new address to minimize potential losses.

5. Beware of Phishing and Fake Websites

• Only interact with trusted dApps and websites.
• Bookmark official sites instead of clicking links from social media or emails.
• MetaMask will never ask for your seed phrase in a popup or website form.

6. Keep Software Updated

• Regularly update MetaMask and your browser to patch security vulnerabilities.
• Enable automatic updates where possible to stay protected.

Bottom Line

Connecting MetaMask to Polygon opens up so many possibilities. You can explore NFTs and gaming, try out DeFi, stake your tokens, or even make cross-chain transactions. With Polygon’s fast speeds and low fees, using blockchain apps becomes much easier. Just remember to start small, stay cautious, and follow good security practices to make the most of it safely.

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Frequently Asked Questions

What is the Chain ID for Polygon network in MetaMask?

The Chain ID for Polygon network is 137. You’ll need to enter this when manually adding the Polygon network to MetaMask, along with the RPC URL and other network details.

Do I need ETH or MATIC to pay for gas fees on Polygon?

You need MATIC tokens to pay for transaction fees on the Polygon network. Make sure you have some MATIC in your wallet before making any transactions, as you cannot use ETH for gas fees on Polygon.

Can I use the same wallet address for both Ethereum and Polygon?

Yes, your MetaMask wallet address remains the same across both networks. However, your token balances will be different on each network, and you’ll need to use a bridge service to move assets between Ethereum and Polygon.