Go bindings to the Etherscan.io API, with nearly Full implementation(accounts, transactions, tokens, contracts, blocks, stats), full network support(Mainnet, Ropsten, Kovan, Rinkby, Tobalaba), and only depending on standard library. 😉
Create a API instance and off you go. 🚀
import (
"github.com/nanmu42/etherscan-api"
"fmt"
)
func main() {
// create a API client for specified ethereum net
// there are many pre-defined network in package
client := etherscan.New(etherscan.Mainnet, "[your API key]")
// (optional) add hooks, e.g. for rate limit
client.BeforeRequest = func(module, action string, param map[string]interface{}) error {
// ...
}
client.AfterRequest = func(module, action string, param map[string]interface{}, outcome interface{}, requestErr error) {
// ...
}
// check account balance
balance, err := client.AccountBalance("0x281055afc982d96fab65b3a49cac8b878184cb16")
if err != nil {
panic(err)
}
// balance in wei, in *big.Int type
fmt.Println(balance.Int())
// check token balance
tokenBalance, err := client.TokenBalance("contractAddress", "holderAddress")
// check ERC20 transactions from/to a specified address
transfers, err := client.ERC20Transfers("contractAddress", "address", startBlock, endBlock, page, offset)
}You may find full method list at GoDoc.
You may apply for an API key on etherscan.
The Etherscan Ethereum Developer APIs are provided as a community service and without warranty, so please just use what you need and no more. They support both GET/POST requests and a rate limit of 5 requests/sec (exceed and you will be blocked).
I am not from Etherscan and I just find their service really useful, so I implement this. 😄
Use of this work is governed by a MIT License.
You may find a license copy in project root.