MetaMask

wallet_switchEthereumChain

Summary: Switches the wallet's active Ethereum chain.

Requests that the wallet switches its active Ethereum chain. Specified by EIP-3326.

Parameters

object

required

Object containing the chain ID to switch to.

null

This method returns null if the active chain is switched.

Code

Message

4902

Unrecognized chain ID. Try adding the chain using wallet_addEthereumChain first.

Customize request

Parameter

Value

Connect your MetaMask wallet to run requests successfully.

await window.ethereum.request({
 "method": "wallet_switchEthereumChain",
 "params": [
  {
    chainId: "0x64"
  }
],
});

null