The Best Way to Add Polygon, BSC & More to MetaMask (with Chainlist)
The blockchain ecosystem thrives with the diversity of EVM-compatible networks, and MetaMask remains the premier crypto wallet for engaging with decentralized applications (dApps), smart contracts, and digital assets. As we explore Polygon, Binance Smart Chain (BSC), Ethereum, Arbitrum, and beyond, integrating these networks into MetaMask requires efficiency and accuracy. Chainlist offers the best solution, simplifying the process of adding Polygon, BSC, and more to MetaMask with verified data and seamless execution. We provide an exhaustive guide detailing the optimal method to enhance MetaMask using Chainlist, including step-by-step instructions, security protocols, troubleshooting tips, and practical applications. This resource equips DeFi traders, NFT creators, and blockchain developers with the knowledge to master network setup as of June 18, 2025, at 09:29 PM +06.
Understanding Chainlist for Network Integration
Chainlist functions as a centralized hub for EVM-compatible blockchain networks, delivering verified details such as Chain IDs, RPC URLs, currency symbols, and block explorer URLs. As of mid-2025, it supports over 385 networks, encompassing mainnets like Polygon (Chain ID: 137) and BSC (Chain ID: 56), as well as testnets like Goerli (Chain ID: 5). This platform eliminates the need for manual configuration, which often leads to errors or security risks when adding networks to MetaMask.
MetaMask, available as a browser extension and mobile app, relies on accurate network settings to connect users to blockchain ecosystems. Chainlist enhances this by providing pre-validated data, enabling us to add Polygon, BSC, and other networks with a single click. This integration supports Layer 2 solutions, sidechains, and test environments, making it the best way to expand MetaMask capabilities.
Prerequisites for Adding Networks
Before using Chainlist to add Polygon, BSC, and more to MetaMask, we ensure the following:
- MetaMask Installation: Install the MetaMask extension from https://metamask.io for browsers like Chrome, Firefox, Edge, or Brave, or download the MetaMask app from the iOS App Store or Google Play Store.
- Wallet Configuration: Set up a MetaMask wallet with a secure seed phrase and password, storing the phrase offline to protect assets.
- Stable Internet: A consistent connection ensures smooth interaction with Chainlist and MetaMask.
- Security Tools: Enable two-factor authentication (2FA) on associated email or phone accounts.
- Basic Knowledge: Familiarity with RPC endpoints, Chain IDs, and network parameters enhances the process.
With these essentials, we proceed to integrate networks.
Step-by-Step Guide to Add Polygon, BSC & More
We outline a detailed process to add Polygon, BSC, and additional networks to MetaMask using Chainlist.
Step 1: Access the Chainlist Platform
Open a browser and navigate to the official Chainlist website at https://chainid.network. The interface features a searchable database of EVM networks, updated in real time to reflect new additions as of June 18, 2025. Bookmark the site to avoid phishing attempts, which often mimic the domain. The Chainlist homepage includes a search bar and network filters for efficient navigation.
Step 2: Connect MetaMask to Chainlist
Establish the connection with these steps:
- Click the “Connect Wallet” button in the top-right corner of the Chainlist homepage.
- Select MetaMask from the wallet options.
- Choose the desired account in the MetaMask prompt and click “Next”.
- Approve the connection by clicking “Connect”.
- Confirm the wallet address displays, indicating a successful link.
Switch accounts by revisiting MetaMask and reconnecting as needed.
Step 3: Select the Network
Locate the target network using Chainlist’s search functionality:
- Enter the network name (e.g., Polygon, BSC, Arbitrum) or Chain ID (e.g., 137, 56, 42161) in the search bar.
- Browse the results or enable the “Include Testnets” toggle for development networks like Sepolia (Chain ID: 11155111).
- Review the network details, including Chain ID, RPC URL, and currency symbol, against official sources.
For example, selecting Polygon reveals its Chain ID (137), RPC URL (https://polygon-rpc.com), and currency (MATIC).
Step 4: Add the Network to MetaMask
Integrate the network with these instructions:
- Click the “Add Chain” or “Add to MetaMask” button next to the network.
- MetaMask displays a confirmation window with details such as:
- Network Name (e.g., Polygon Mainnet)
- RPC URL (e.g., https://polygon-rpc.com)
- Chain ID (e.g., 137)
- Currency Symbol (e.g., MATIC)
- Block Explorer URL (e.g., https://polygonscan.com)
- Verify the information and click “Approve”.
- Choose “Switch Network” to activate or “Close” to stay on the current network.
Repeat for BSC (Chain ID: 56, RPC URL: https://bsc-dataseed.binance.org/) and other networks.
Step 5: Verify Network Integration
Confirm the addition with these steps:
- Open MetaMask and select the new network from the network dropdown.
- Ensure it loads without issues.
- Visit the network’s block explorer (e.g., https://polygonscan.com for Polygon, https://bscscan.com for BSC) to verify the address and transactions.
Retry if the network does not appear.
Mobile Users: Adding Networks via MetaMask App
For MetaMask mobile app users:
- Launch the MetaMask app on an iOS or Android device.
- Tap the browser icon to access the in-app browser.
- Navigate to https://chainid.network.
- Follow the desktop steps: connect wallet, search network, and add via “Add Chain”.
- Approve and switch networks as prompted.
This ensures a consistent experience.
Top Networks to Add with Chainlist
We highlight the best networks to add to MetaMask:
- Polygon (Chain ID: 137): A Layer 2 solution for low-cost transactions, using MATIC.
- Binance Smart Chain (BSC) (Chain ID: 56): A high-throughput network for dApps, using BNB.
- Ethereum Mainnet (Chain ID: 1): The foundation for smart contracts, using ETH.
- Arbitrum (Chain ID: 42161): A Layer 2 rollup for efficiency, using ETH.
- Avalanche C-Chain (Chain ID: 43114): A scalable platform, using AVAX.
- Optimism (Chain ID: 10): An Ethereum Layer 2 for low fees, using ETH.
- Base (Chain ID: 8453): A Coinbase Layer 2 for DeFi, using ETH.
- zkSync Era (Chain ID: 324): A zero-knowledge rollup for privacy, using ETH.
- Linea (Chain ID: 59144): A zkEVM network for scalability, using ETH.
- Goerli Testnet (Chain ID: 5): A test network for development, using GoETH.
These networks expand MetaMask functionality.
Security Best Practices
Protect MetaMask when adding networks:
- Validate Chain IDs and RPC URLs with official network sites.
- Access Chainlist only via https://chainid.network.
- Research unlisted networks via Twitter and Discord.
- Monitor transaction history with block explorers.
- Enable 2FA on linked accounts.
- Use a secure, private internet connection.
These measures ensure safe integration.
Troubleshooting Common Issues
Address these problems during setup:
- Network Not Visible: Re-approve via Chainlist or restart MetaMask.
- Connection Errors: Clear cache or switch RPC URLs.
- Invalid Data: Remove and re-add with correct details.
- Phishing Risks: Verify Chainlist URL and report suspicious sites.
- Testnet Tokens: Request from official faucets.
Consult MetaMask Help Center (https://support.metamask.io) for support.
Advanced Tips for Network Management
Optimize MetaMask with these strategies:
- Add custom RPC URLs from Infura or Alchemy via MetaMask Settings.
- Batch add testnets using “Include Testnets”.
- Monitor gas fees with GasNow or Polygon Gas Station.
- Bridge assets via Polygon Bridge or Arbitrum Bridge.
- Backup the seed phrase to a secure offline location.
These techniques enhance efficiency.
Benefits of Using Chainlist
Adding Polygon, BSC, and more via Chainlist offers:
- Ease of Use: One-click network additions save time.
- Cost Efficiency: Lower fees on Polygon and Arbitrum.
- Diversity: Access to Layer 2 and testnets.
- Security: Verified data reduces risks.
- Innovation: Early access to networks like zkSync Era.
These advantages enrich our blockchain engagement.
Practical Applications of Networks
Leverage networks for:
- DeFi: Trade on Uniswap (Polygon) or PancakeSwap (BSC).
- NFTs: Mint on Base or Avalanche C-Chain.
- Gaming: Play on BNB Chain platforms.
- Development: Test on Goerli or Sepolia.
These uses highlight Chainlist’s value.
The Future of Chainlist and MetaMask
As blockchain adoption grows, Chainlist supports emerging networks like Scroll and Mantle. This ensures our MetaMask remains a leader in Web3 innovation.
Conclusion
The best way to add Polygon, BSC, and more to MetaMask relies on Chainlist, offering a streamlined, secure process. This guide provides detailed steps, troubleshooting tips, and advanced strategies, enhancing our wallet experience. Whether pursuing DeFi, NFTs, or development, Chainlist delivers optimal integration. Visit Tech Today for more crypto resources and lead the blockchain revolution.