Flashbots RPC client

Fork of ethrpc with additional Flashbots RPC methods:

• FlashbotsCallBundle (eth_callBundle)
• FlashbotsSendBundle (eth_sendBundle)
• FlashbotsGetUserStats (flashbots_getUserStats)
• FlashbotsSendPrivateTransaction (eth_sendPrivateTransaction)
• FlashbotsCancelPrivateTransaction (eth_cancelPrivateTransaction)
• FlashbotsSimulateBlock: simulate a full block

Usage

Add library to your project:

go get github.com/metachris/flashbotsrpc

Create a new private key here for testing (you probably want to use an existing one):

privateKey, _:=crypto.GenerateKey()

Simulate transactions with eth_callBundle:

callBundleArgs:= flashbotsrpc.FlashbotsCallBundleParam{
Txs: []string{"YOUR_RAW_TX"},
BlockNumber: fmt.Sprintf("0x%x", 13281018),
StateBlockNumber: "latest",
}
result, err:=rpc.FlashbotsCallBundle(privateKey, callBundleArgs)
iferr!=nil {
log.Fatal(err)
}
fmt.Printf("%+v\n", result)

Get Flashbots user stats:

rpc:=flashbotsrpc.New("https://relay.flashbots.net")
result, err:=rpc.FlashbotsGetUserStats(privateKey, 13281018)
iferr!=nil {
log.Fatal(err)
}
fmt.Printf("%+v\n", result)

Send a transaction bundle to Flashbots with eth_sendBundle:

sendBundleArgs:= flashbotsrpc.FlashbotsSendBundleRequest{
Txs: []string{"YOUR_RAW_TX"},
BlockNumber: fmt.Sprintf("0x%x", 13281018),
}
result, err:=rpc.FlashbotsSendBundle(privateKey, sendBundleArgs)
iferr!=nil {
log.Fatal(err)
}
fmt.Printf("%+v\n", result)

Send a transaction bundle to a list of Builder endpoints with eth_sendBundle (full example [/examples/broadcastbundle]):

urls:= []string{
"https://relay.flashbots.net",
// Refer to https://www.mev.to/builders for builder endpoints 
}
rpc:=flashbotsrpc.NewBuilderBroadcastRPC(urls)
sendBundleArgs:= flashbotsrpc.FlashbotsSendBundleRequest{
Txs: []string{"YOUR_RAW_TX"},
BlockNumber: fmt.Sprintf("0x%x", 13281018),
}
results:=rpc.BroadcastBundle(privateKey, sendBundleArgs)
for_, result:=rangeresults {
ifresult.Err!=nil {
log.Fatal(result.Err)
}
fmt.Printf("%+v\n", result.BundleResponse)
}

More examples

You can find example code in the /examples/ directory.