Metamask: How to change rpc url programatically in MetaMask?
** Metamask: how to change the RPC URL programmatically
From my latest update in April 2023, the official API Metamas documentation does not allow directly to change the “RPCURL” parameter. However, it offers several ways to achieve what may not be so simple or efficient as expected, but are still feasible under certain conditions.
Method
1: Use of the Web3.js library and its methods Eth_acchuts
You can use the web3.js bookcase to get current accounts from the URL RPC Metamaska. So you can compare them with the desired URL RPC address. Here is a simplified example:
`Javascript
Async Changerpcurl () {function
try {
// Download the current account (it should be "0x ...")
Constacucent = Waiting for Web3.eth.GetacCounts ();
// Your desirable RPC URL address
Const Corpcurl = '
// Check if the account is "0x ..." and compare with the URL RPC address
If (curecccunt [0] === '0x ...') {
Console.log ("Account adapts to the new URL RPC address");
// Update the web3 application or network configuration to use the new RPC URL address
} Otherwise {
Console.log ("The account does not correspond to the new RPC URL address");
}
} Catch (error) {
console.error (error);
}
}
Changerpcurl ();
It should be remembered that the direct change of the "Web3" request may require manual regulation of the network configuration.
Method
2: Use of your final point of Metamask API to change rpcurl
The official Metamask API interface has a method called "Setpcurl", which can be used, but as the example above the web3.js, requires the manual update of the RPC URL address of your account using this method. However, it should be remembered that there is no direct way to update via the User Interface of the Metamask browser, as one might expect.
Here's how to do it:
Javascript
Async Changerpcurl () {function
try {
// Download the current account (it should be "0x ...")
Constacucent = Waiting for Web3.eth.GetacCounts ();
// Your desirable RPC URL address
Const Corpcurl = '
// Set the RPCURL Programwo parameter
Wait for the supplier.setpcurl (niprpcurl, {
// If necessary, you can set additional parameters (e.g. Chainid)
});
} Catch (error) {
console.error (error);
}
}
Changerpcurl ();
ATTENTION ONWeb3 and Network Configuration
It is recommended to manually support the network configuration and not rely on the methods provided, since the changes can be promoted by many chains or networks.
Always inform the “Web3” application before updating the RPC URL addresses.
