How Do I Use chainslist to Add an EVM Network?

chainslist helps you add an EVM network to your wallet once you check its chain ID and RPC endpoint. Find the network, confirm its details, then approve the request in your wallet. Adding it lets the wallet use that network; it does not move your funds between networks.

Key points

  • The chain ID identifies the network; the RPC endpoint connects your wallet to it.
  • Check the details before approving a network, even with a one-click request.
  • Adding a network is free, but sending a transaction usually costs a network fee.

chainslist Lists the Details Your Wallet Needs

An EVM network uses the same basic wallet system as Ethereum. A directory lets you find the settings for that network without guessing them. The main details are its chain ID, RPC URL, network name, and native currency.

  • Chain ID: the number that identifies the network to your wallet.
  • RPC URL: the address of a service your wallet asks for balances and transaction data.
  • Network name: the label your wallet displays when that network is selected.
  • Native currency: the coin used to pay the network’s transaction fees, often called gas.
  • Block explorer URL: an optional address for looking up transactions on that network.

For example, Ethereum has chain ID 1, while Optimism has chain ID 10. Both can use the same wallet address, but each network has its own balances and transactions. Seeing the same address after switching networks does not mean your funds have moved.

Your Wallet Uses Those Details to Add the Network

Your wallet uses the chain ID to identify the network and the RPC URL to contact it. First, check whether the network is already available in your wallet. If it is, select it instead of adding another entry.

If you need to add it, check the chain ID against the network’s own published details. In the chainslist network directory, use that number to make sure you found the intended network. Then chainslist.org supplies its chain ID and RPC endpoint and lets you add it to MetaMask or another compatible wallet in one click. Review the details your wallet presents before you approve them.

You can also enter the details manually in a wallet that supports custom EVM networks. Copy the network name, chain ID, and RPC URL into the matching fields. Add the currency symbol and block explorer URL if your wallet asks for them, then save the network.

A one-click request still goes through your wallet. EIP-3085, the standard describing these requests, says a wallet must reject an RPC endpoint that reports a different chain ID. It also says adding a network does not guarantee the wallet will select it. Check the selected network before you send anything.

Suppose you want to use Optimism while your wallet currently shows Ethereum. After adding Optimism, select it and confirm that the wallet shows the intended network. You will need funds on Optimism to pay for an Optimism transaction. Adding the network alone does not transfer funds there.

The RPC Endpoint Affects Access and Privacy

An RPC endpoint answers your wallet’s requests for network data. If it is slow, unavailable, or limits requests, your wallet may fail to load balances or send a transaction. You can usually change the RPC URL for a network without changing its chain ID.

The endpoint operator can also see requests from your wallet, including information such as your IP address and the addresses you look up. A chain ID match confirms which network an endpoint claims to serve; it does not prove that every answer is honest. For an occasional wallet user, I would choose an endpoint published by the network or a provider I trust.

Common Questions About chainslist

These answers cover the cost, purpose, and safety checks that matter when choosing a listed network.

Are the RPC endpoints on chainslist free to use?

Some public RPC endpoints are free for ordinary wallet use, but access depends on the endpoint operator. A provider may limit how often you can make requests or require an account for heavier use. Adding the network costs nothing by itself. Sending a transaction is different: the network charges gas, and the amount varies with the network and the transaction.

Why does a network on chainslist need a chain ID?

The chain ID tells your wallet which network a transaction is meant for. EIP-155 includes that number when a transaction is signed, helping prevent the same signed transaction from being used on another network. That is why a familiar network name is not enough: check its chain ID too.

Is it safe to add a network to my wallet from chainslist?

Adding a network is generally a settings change, but you should check what you approve. Match the chain ID with the network’s published details, and consider who runs the RPC endpoint. Never enter your recovery phrase to add a network. If the details conflict or you cannot identify a trustworthy endpoint, wait until you can verify them before using that network.

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