BackRunMe: arbOnlyMEV

Name: arbOnlyMEV
arbOnlyMEV is an opt-in stream of private transactions that are available for arbitrage opportunities where the searcher shares the profit with the transaction sender, miner, and bloXroute. Full transaction details are not made available on this stream (no signature fields) to retain the privacy of the sender, though MEV bundles that reference these transaction hashes can be created via submit_arb_only_bundle. Transactions that appear in the arbOnlyMEV stream are not available in public mempool and do not appear in the newTxs or pendingTxs feeds.
This stream is only available on special Cloud API instance (backrunme.blxrbdn.com) to Enterprise users.
Options
Key
Description
Values
include
Fields to include in the transaction stream. 
transactions
Examples
Python
Node.js
Golang
wscat
Python
from bloxroute_cli.provider.cloud_wss_provider import CloudWssProvider
​
​
async with WsProvider(
    uri="wss://backrunme.blxrbdn.com/ws",
    headers={"Authorization": <YOUR-AUTHORIZATION-HEADER>}
) as ws:
    subscription_id = await ws.subscribe("arbOnlyMEV", {"include": ["transactions"]})
    while True:
        next_notification = await ws.get_next_subscription_notification_by_id(subscription_id)
        print(next_notification)  # or process it generally
    await ws.unsubscribe(subscription_id)
    
Node.js
var fs = require('fs');
const WebSocket = require('ws');
​
const ws = new WebSocket(
  "wss://backrunme.blxrbdn.com/ws", 
  {
    headers: { 
      "Authorization" : <YOUR-AUTHORIZATION-HEADER> 
    },
    rejectUnauthorized: false,
  }
);
​
function proceed() {
    ws.send(`{"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["arbOnlyMEV", {"include": ["transactions"]}]}`);
}
​
​
function handle(nextNotification) {
    console.log(nextNotification.toString()); // or process it generally
}
​
ws.on('open', proceed);
ws.on('message', handle);
​
Golang
package main
​
import (
	"crypto/tls"
	"fmt"
	"github.com/gorilla/websocket"
	"net/http"
)
​
func main() {
  tlsConfig := &tls.Config{
  	InsecureSkipVerify: true,
  }
  dialer := websocket.DefaultDialer
  dialer.TLSClientConfig = tlsConfig
  wsSubscriber, _, err := dialer.Dial("wss://backrunme.blxrbdn.com/ws", http.Header{"Authorization": []string{<YOUR-AUTHORIZATION-HEADER>}})
​
	if err != nil {
		fmt.Println(err)
		return
	}
​
	subRequest := `{"id": 1, "method": "subscribe", "params": ["arbOnlyMEV", {"include": ["transactions"]}]}`
	err = wsSubscriber.WriteMessage(websocket.TextMessage, []byte(subRequest))
	if err != nil {
		fmt.Println(err)
		return
	}
​
	for {
		_, nextNotification, err := wsSubscriber.ReadMessage()
		if err != nil {
			fmt.Println(err)
		}
		fmt.Println(string(nextNotification)) // or process it generally
	}
}
wscat
wscat -c wss://backrunme.blxrbdn.com/ws --no-check --header "Authorization: <YOUR-AUTHORIZATION-HEADER>"
> {"id": 1, "method": "subscribe", "params": ["arbOnlyMEV", {"include": ["transactions"]}]}
< ......
​
​
Response (Tx Events)
Transaction Event
Transaction Event
<<< {
  "jsonrpc": "2.0",
  "id": null,
  "method": "subscribe",
  "params": {
    "subscription": "3c87cccd-0df5-4938-947e-b24f7602f147",
    "result": {
      "transactions": [
          {
          "txHash": "0x88b...296",
          "txContents": {
            "from": "0x6e9...f89",
            "gas": "0x299b6",
            "gasPrice": "0xf9982de00",
            "hash": "0x88b...296",
            "input": "0x18...cc2",
            "nonce": "0xf",
            "value": "0x0",
            "type": "0x0",
            "to": "0x7a2...88d"
          },
          "localRegion": true
        }
      ]
    }
  }
}
ethOnBlock
🌐 BDN Architecture
Last updated 2 days ago
Key	Description	Values
`include`	Fields to include in the transaction stream.	`transactions`