prepareAuthorization
Prepares an EIP-7702 authorization for signing
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Prepares an EIP-7702 authorization for signing
Prepares an EIP-7702 Authorization object for signing. This action will fill the required fields of the Authorization object if they are not provided (e.g. nonce and chainId).
With the prepared Authorization object, you can use signAuthorization to sign over the Authorization object.
Import the wallet actions package so you can call this action.
import "github.com/ChefBingbong/viem-go/actions/wallet"See how to construct a wallet client and call this action.
import ( "context" "log"
"github.com/ChefBingbong/viem-go/actions/wallet" "github.com/ChefBingbong/viem-go/client" "github.com/ChefBingbong/viem-go/client/transport" "github.com/ChefBingbong/viem-go/chain/definitions")
ctx := context.Background()
walletClient, err := client.CreateWalletClient(client.WalletClientConfig{ Chain: definitions.Mainnet, Transport: transport.HTTP("https://eth.llamarpc.com"),})if err != nil { log.Fatal(err)}defer func() { _ = walletClient.Close() }()
auth, err := wallet.PrepareAuthorization(ctx, walletClient, wallet.PrepareAuthorizationParameters{ ContractAddress: "0xA0Cf798816D4b9b9866b5330EEa46a18382f251e",})if err != nil { log.Fatal(err)}log.Printf("Prepared authorization: %+v", auth)authorization.AuthorizationRequest
The prepared authorization request with all required fields populated.
Control which account is used to prepare the authorization.
Type: Account
Optional
The account to prepare authorization for. If nil, uses the client's account.
import "github.com/ChefBingbong/viem-go/accounts"
account, err := accounts.PrivateKeyToAccount("0x...")if err != nil { log.Fatal(err)}
auth, err := wallet.PrepareAuthorization(ctx, walletClient, wallet.PrepareAuthorizationParameters{ Account: account, ContractAddress: "0xA0Cf798816D4b9b9866b5330EEa46a18382f251e",})Specify the contract address that the authorization applies to.
string-- Required
The contract address being authorized. Either ContractAddress or Address must be provided.
auth, err := wallet.PrepareAuthorization(ctx, walletClient, wallet.PrepareAuthorizationParameters{ ContractAddress: "0xA0Cf798816D4b9b9866b5330EEa46a18382f251e",})Optionally provide an alias for the contract address.
Type: string
Optional
An alias for ContractAddress (for compatibility).
Override the chain ID used for the authorization.
Type: *int
Optional
The chain ID for the authorization. If nil, it will be fetched from the client's chain or via eth_chainId.
chainID := 1auth, err := wallet.PrepareAuthorization(ctx, walletClient, wallet.PrepareAuthorizationParameters{ ContractAddress: "0xA0Cf798816D4b9b9866b5330EEa46a18382f251e", ChainID: &chainID,})Override the nonce used for the authorization.
Type: *int
Optional
The nonce for the authorization. If nil, it will be fetched via eth_getTransactionCount with "pending" block tag.
nonce := 0auth, err := wallet.PrepareAuthorization(ctx, walletClient, wallet.PrepareAuthorizationParameters{ ContractAddress: "0xA0Cf798816D4b9b9866b5330EEa46a18382f251e", Nonce: &nonce,})Configure who will execute the EIP-7702 transaction.
Type: any
Optional
Specifies who will execute the EIP-7702 transaction:
nil: assumes another account will execute"self": the signing account will execute (nonce += 1)Account: a specific account will execute (nonce += 1 if same as signing account)auth, err := wallet.PrepareAuthorization(ctx, walletClient, wallet.PrepareAuthorizationParameters{ ContractAddress: "0xA0Cf798816D4b9b9866b5330EEa46a18382f251e", Executor: "self",})