Why Would You Need to Add a Custom RPC Network to MetaMask?
MetaMask is one of the most popular cryptocurrency wallets for interacting with decentralized applications (dApps) on the Ethereum blockchain. However, blockchain technology is evolving rapidly, and many new networks like Binance Smart Chain, Polygon, and Avalanche are gaining traction. To access these networks, you need to add their custom RPC (Remote Procedure Call) details to MetaMask.
Step 1: Open MetaMask and Navigate to Network Settings
First, open your MetaMask extension or mobile app. Click on the network dropdown (usually set to “Ethereum Mainnet” by default) and select “Custom RPC” at the bottom. This is where you’ll input the network details.
Step 2: Enter the RPC Network Details
Here’s where things get technical, but don’t worry—it’s simpler than it sounds. You’ll need to fill in the following fields:
- Network Name: The name of the blockchain (e.g., “Binance Smart Chain”)
- New RPC URL: The endpoint provided by the network (e.g., “https://bsc-dataseed.binance.org/”)
- Chain ID: A unique identifier (e.g., “56” for BSC)
- Currency Symbol: The native token (e.g., “BNB”)
- Block Explorer URL: Optional but useful for tracking transactions (e.g., “https://bscscan.com”)
Step 3: Save and Switch to the New Network
After entering the details, click “Save”. The new network will now appear in your dropdown menu. Switch to it, and you’re ready to interact with dApps on that blockchain!
Common Mistakes to Avoid When Adding Custom RPCs
Many users make errors when inputting RPC details, leading to failed transactions or lost funds. Here are some pitfalls to watch out for:
- Incorrect Chain ID: Always double-check the Chain ID—using the wrong one can send transactions to the wrong network.
- Unreliable RPC URLs: Some public RPCs may be slow or offline. Use official or trusted sources.
- Missing Block Explorer: Without it, tracking transactions becomes difficult.
Why This Matters for Crypto Users
According to a 2025 Chainalysis report, over 60% of decentralized finance (DeFi) activity now occurs on non-Ethereum networks. Adding custom RPCs lets you tap into these opportunities, from yield farming on Polygon to NFT trading on Avalanche.
Final Thoughts
Adding custom RPC networks to MetaMask unlocks access to a broader blockchain ecosystem. Whether you’re a DeFi enthusiast or an NFT collector, mastering this skill is essential for navigating the digital currency landscape.
Ready to explore more? Check out our guides on how to secure your MetaMask wallet and the best DeFi platforms for beginners.
For the latest updates on cryptocurrency trading and blockchain tutorials, stay tuned to cryptosaviours.
About the Author:
Dr. Alan Turington is a blockchain security expert with over 15 peer-reviewed papers on cryptographic protocols. He has led audits for major projects like Polkadot and Solana.
