getCode

Retrieves the bytecode at an address

Import

Import the public actions package so you can call this action.

import "github.com/ChefBingbong/viem-go/actions/public"

Usage

A minimal example showing how to construct a public client and call this action.

import (
  "context"
  "log"

  "github.com/ethereum/go-ethereum/common"
  "github.com/ChefBingbong/viem-go/actions/public"
  "github.com/ChefBingbong/viem-go/client"
  "github.com/ChefBingbong/viem-go/client/transport"
  "github.com/ChefBingbong/viem-go/chain/definitions"
)

ctx := context.Background()

publicClient, err := client.CreatePublicClient(client.PublicClientConfig{
  Chain:     definitions.Mainnet,
  Transport: transport.HTTP("https://eth.llamarpc.com"),
})
if err != nil {
  log.Fatal(err)
}
defer func() { _ = publicClient.Close() }()

code, err := public.GetCode(ctx, publicClient, public.GetCodeParameters{
  Address: common.HexToAddress("0xA0Cf798816D4b9b9866b5330EEa46a18382f251e"),
})
if err != nil {
  log.Fatal(err)
}
if code == nil {
  log.Println("No contract deployed at this address")
} else {
  log.Printf("Contract bytecode length: %d bytes", len(code))
}

Returns

[]byte

The contract bytecode. Returns nil if no code exists at the address (empty account).

Parameters

Configuration options accepted by this action.

Address

Type: common.Address
Required

The contract address to retrieve bytecode for.

import (
  "github.com/ethereum/go-ethereum/common"
  "github.com/ChefBingbong/viem-go/actions/public"
)

code, err := public.GetCode(ctx, publicClient, public.GetCodeParameters{
  Address: common.HexToAddress("0xA0Cf798816D4b9b9866b5330EEa46a18382f251e"),
})

BlockNumber

Type: *uint64
Optional

The block number to get the code at.

import "github.com/ChefBingbong/viem-go/actions/public"

blockNum := uint64(12345)
code, err := public.GetCode(ctx, publicClient, public.GetCodeParameters{
  Address:     common.HexToAddress("0xA0Cf798816D4b9b9866b5330EEa46a18382f251e"),
  BlockNumber: &blockNum,
})

BlockTag

Type: BlockTag
Default: "latest"
Optional

The block tag to get the code at (e.g., "latest", "pending").

import "github.com/ChefBingbong/viem-go/actions/public"

code, err := public.GetCode(ctx, publicClient, public.GetCodeParameters{
  Address:  common.HexToAddress("0xA0Cf798816D4b9b9866b5330EEa46a18382f251e"),
  BlockTag: public.BlockTagSafe,
})

JSON-RPC Method

Underlying JSON-RPC method used by this action.

eth_getCode