How to add network in MetaMask? Custom RPC and cross-chain transfer guide

Adding a custom network via Custom RPC in MetaMask and mastering cross-chain transfers can enhance your crypto experience; follow our guide for detailed steps and tips.

Jun 07, 2025 at 01:21 am

Adding a custom network to MetaMask and understanding how to perform cross-chain transfers can significantly enhance your cryptocurrency experience. This guide will walk you through the detailed steps of adding a custom network using a Custom RPC in MetaMask and will also cover the essentials of cross-chain transfers.

Understanding Custom RPC in MetaMask

Before diving into the steps of adding a custom network, it's important to understand what a Custom RPC is. Custom RPC stands for Custom Remote Procedure Call, which is a method used to interact with different blockchain networks. By adding a Custom RPC, you can connect MetaMask to networks other than Ethereum's mainnet, such as testnets or other blockchains.

Steps to Add a Custom Network in MetaMask

To add a custom network in MetaMask, follow these detailed steps:

• Open MetaMask: Start by opening the MetaMask extension in your browser. Ensure you are logged into your MetaMask wallet.

• Access Settings: Click on the three dots in the top right corner of the MetaMask interface, then select "Settings".

• Navigate to Networks: Within the settings menu, click on "Networks". You will see a list of the networks you are currently connected to.

• Add New Network: Click on the "Add Network" button. A form will appear where you can enter the details of the new network.

• Enter Network Details: You will need to fill in the following fields:

  • Network Name: This can be any name you choose to identify the network.
  • New RPC URL: This is the URL provided by the network you want to connect to. For example, for the Binance Smart Chain, it might be https://bsc-dataseed.binance.org/.
  • Chain ID: Each network has a unique Chain ID. For Binance Smart Chain, it's 56.
  • Currency Symbol: This is the symbol of the native currency of the network. For BSC, it's BNB.
  • Block Explorer URL: This is optional but useful for viewing transactions on the network. For BSC, it could be https://bscscan.com/.

• Save the Network: After entering all the required details, click "Save". The new network should now appear in your list of networks.

• Switch to the New Network: You can now switch to the new network by selecting it from the network dropdown menu at the top of the MetaMask interface.

Cross-Chain Transfers: An Overview

Cross-chain transfers refer to the process of moving assets between different blockchain networks. This is crucial for users who want to leverage the benefits of multiple blockchains. Cross-chain transfers can be facilitated through various methods, including bridge services and decentralized exchanges (DEXs).

Using Bridge Services for Cross-Chain Transfers

Bridge services are specialized platforms designed to facilitate the transfer of assets between different blockchains. Here's how you can use a bridge service to perform a cross-chain transfer:

• Select a Bridge Service: Choose a reputable bridge service that supports the networks you want to transfer between. Examples include Anyswap, Multichain (formerly Anyswap), and xDai Bridge.

• Connect Your Wallet: Visit the bridge service website and connect your MetaMask wallet to the platform. Ensure you are on the correct network in MetaMask before connecting.

• Choose the Asset to Transfer: Select the asset you want to transfer from the source network to the destination network. Ensure the asset is supported by the bridge service.

• Enter Transfer Amount: Enter the amount of the asset you wish to transfer. Be aware of any fees associated with the transfer.

• Initiate the Transfer: Click on the "Transfer" or "Swap" button to initiate the process. You may need to confirm the transaction in MetaMask.

• Wait for Confirmation: The transfer will take some time to complete as it involves multiple blockchain transactions. You can track the progress using the transaction hashes provided by the bridge service.

• Receive the Asset on the Destination Network: Once the transfer is complete, the asset should appear in your wallet on the destination network. You may need to switch networks in MetaMask to view the asset.

Using Decentralized Exchanges for Cross-Chain Transfers

Decentralized exchanges (DEXs) can also be used for cross-chain transfers. Here's how to use a DEX for this purpose:

• Select a DEX: Choose a DEX that supports cross-chain swaps, such as Uniswap, SushiSwap, or PancakeSwap.

• Connect Your Wallet: Connect your MetaMask wallet to the DEX. Ensure you are on the correct network in MetaMask.

• Choose the Asset to Swap: Select the asset you want to swap from the source network to the destination network. Ensure the asset is supported by the DEX.

• Enter Swap Amount: Enter the amount of the asset you wish to swap. Be aware of any fees associated with the swap.

• Initiate the Swap: Click on the "Swap" button to initiate the process. You may need to confirm the transaction in MetaMask.

• Wait for Confirmation: The swap will take some time to complete as it involves blockchain transactions. You can track the progress using the transaction hashes provided by the DEX.

• Receive the Asset on the Destination Network: Once the swap is complete, the asset should appear in your wallet on the destination network. You may need to switch networks in MetaMask to view the asset.

Troubleshooting Common Issues

When adding a custom network or performing cross-chain transfers, you might encounter some issues. Here are some common problems and their solutions:

• Incorrect Network Details: If you encounter errors after adding a custom network, double-check the RPC URL, Chain ID, and other details to ensure they are correct.

• Transaction Failures: If a cross-chain transfer fails, check the transaction status on the block explorer of both the source and destination networks. Look for any error messages that might indicate the cause of the failure.

• Insufficient Funds: Ensure you have enough funds to cover the transfer fees. Some bridge services and DEXs may require a minimum amount for transfers.

• Network Congestion: During periods of high network congestion, transactions may take longer to process. Be patient and monitor the transaction status regularly.

Frequently Asked Questions

Q: Can I add any blockchain network to MetaMask using Custom RPC?
A: Not all blockchain networks are compatible with MetaMask. You can only add networks that support the Ethereum Virtual Machine (EVM) or have specific integrations with MetaMask.

Q: Are there any risks associated with cross-chain transfers?
A: Yes, there are risks such as smart contract vulnerabilities, potential loss of funds due to bridge service issues, and transaction failures. Always use reputable services and thoroughly research before initiating a transfer.

Q: How can I verify the security of a bridge service?
A: Look for bridge services that have been audited by reputable security firms. Check for user reviews and any reported issues. Also, ensure the service has a clear and transparent process for handling funds.

Q: What should I do if I lose funds during a cross-chain transfer?
A: If you lose funds during a cross-chain transfer, contact the support team of the bridge service or DEX you used. Provide them with the transaction hashes and any error messages you received. Additionally, consider reaching out to the community forums for further assistance.