{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "wallet_addSubAccount",
  "params": [{
    "account": {
      "type": "create",
      "keys": [{
        "type": "p256",
        "publicKey": "0x0123456789abcdef..."
      }]
    }
  }]
}

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "address": "0x1234567890123456789012345678901234567890",
    "chainId": "0x2105"
  }
}
Experimental RPC method for creating sub accounts
Creates a new sub account associated with the main wallet account. Sub accounts allow for hierarchical account management and delegation.

​
Parameters

​
account
object
required
The account configuration object.

​
Returns

​
result
object
Sub account information including address and deployment details.
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "wallet_addSubAccount",
  "params": [{
    "account": {
      "type": "create",
      "keys": [{
        "type": "p256",
        "publicKey": "0x0123456789abcdef..."
      }]
    }
  }]
}

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "address": "0x1234567890123456789012345678901234567890",
    "chainId": "0x2105"
  }
}

​
Error Handling

CodeMessageDescription
4001User rejected the requestUser denied creating the sub account
4100Requested method not supportedThe method is not supported by the wallet
-32602Invalid paramsInvalid account configuration
This is an experimental feature and the API may change in future versions.