diff --git a/libs/remix-simulator/bin/ethsim b/libs/remix-simulator/bin/ethsim
index 814e2a6a46..dd7a9c6538 100755
--- a/libs/remix-simulator/bin/ethsim
+++ b/libs/remix-simulator/bin/ethsim
@@ -23,22 +23,37 @@ program
   .command('start')
   .option('-p, --port [port]', 'specify port', 8545)
   .option('-b, --ip [host]', 'specify host', '127.0.0.1')
-  .option('-c, --coinbase [coinbase]', 'specify coinbase', '0x0000000000000000000000000000000000000000')
   .option('--rpc', 'run rpc server only', true)
   .option('--details', 'display payloads for every requests and their responses', false)
-  .action((option) => {
-    console.log('coinbase: ', option.coinbase)
+  .option('-c, --coinbase [coinbase]', 'specify coinbase', '0x0000000000000000000000000000000000000000')
+  .option('-f, --fork [fork]', 'specify fork name')
+  .option('-n, --nodeUrl [nodeUrl]', 'specify node url')
+  .option('-bn, --blockNumber [blockNumber]', 'specify block Number')
+  .option('-s, --stateDb [stateDb]', 'specify state database')
+  .option('-bs, --blocks [blocks]', 'specify blocks')
+  .action((option, env) => {
+    env.outputHelp()
+    console.log('\n')
+    console.log('Usage:')
+    console.log('remix-simulator start')
+    console.log('remix-simulator start -n <node url> -f cancun -bn latest')
+    console.log('\n')
+    console.log('Command line options:')
+    console.log('port: ', option.port)
+    console.log('host: ', option.ip)
     console.log('rpc: ', option.rpc)
     console.log('details: ', option.details)
-    console.log('host: ', option.ip)
-    console.log('port: ', option.port)
-    const Server = require('../src/server')
-    const server = new Server({
-      coinbase: option.coinbase,
-      rpc: option.rpc,
-      logDetails: option.details
-    })
-    server.start(option.ip, option.port)
+    console.log('\n')
+    console.log('Provider options:')
+    console.log('coinbase: ', option.coinbase)
+    console.log('fork: ', option.fork)
+    console.log('nodeUrl: ', option.nodeUrl)
+    console.log('blockNumber: ', option.blockNumber)
+    console.log('stateDb: ', option.stateDb)
+    console.log('blocks: ', option.blocks)
+    const { Server } = require('../src/server')
+    const server = new Server(option)
+    server.start(option)
   })
 
 program.parse(process.argv)
diff --git a/libs/remix-simulator/src/index.ts b/libs/remix-simulator/src/index.ts
index e49f4baf86..35835a8ee2 100644
--- a/libs/remix-simulator/src/index.ts
+++ b/libs/remix-simulator/src/index.ts
@@ -1 +1,2 @@
 export { Provider, extend, JSONRPCRequestPayload, JSONRPCResponsePayload, JSONRPCResponseCallback } from './provider'
+export { Server } from './server'
diff --git a/libs/remix-simulator/src/provider.ts b/libs/remix-simulator/src/provider.ts
index 39b1cd1c5f..27918a4359 100644
--- a/libs/remix-simulator/src/provider.ts
+++ b/libs/remix-simulator/src/provider.ts
@@ -35,7 +35,7 @@ export type ProviderOptions = {
   nodeUrl?: string,
   blockNumber?: number | 'latest',
   stateDb?: State,
-  logDetails?: boolean
+  details?: boolean
   blocks?: string[],
   coinbase?: string
 }
@@ -90,12 +90,12 @@ export class Provider {
       return
     }
     const method = this.methods[payload.method]
-    if (this.options.logDetails) {
+    if (this.options.details) {
       info(payload)
     }
     if (method) {
       return method.call(method, payload, (err, result) => {
-        if (this.options.logDetails) {
+        if (this.options.details) {
           info(err)
           info(result)
         }
diff --git a/libs/remix-simulator/src/server.ts b/libs/remix-simulator/src/server.ts
index 15636cac5a..0f285609d1 100644
--- a/libs/remix-simulator/src/server.ts
+++ b/libs/remix-simulator/src/server.ts
@@ -1,26 +1,32 @@
-import express from 'express'
 import cors from 'cors'
 import bodyParser from 'body-parser'
-import expressWs from 'express-ws'
-import { Provider } from './provider'
-import { log } from './utils/logs'
-const app = express()
+import { Provider, ProviderOptions } from './provider'
+import { log, error } from './utils/logs'
 
-class Server {
+export type CliOptions = {
+  rpc?: boolean,
+  port: number
+  ip: string
+}
+
+export class Server {
   provider
-  rpcOnly
 
-  constructor (options) {
+  constructor (options?: ProviderOptions) {
     this.provider = new Provider(options)
     this.provider.init().then(() => {
       log('Provider initiated')
+      log('Test accounts:')
+      log(Object.keys(this.provider.Accounts.accounts))
     }).catch((error) => {
       log(error)
     })
-    this.rpcOnly = options.rpc
   }
 
-  start (host, port) {
+  async start (cliOptions: CliOptions) {
+    const expressWs = (await import('express-ws')).default
+    const express = (await import('express')).default
+    const app = express()
     const wsApp = expressWs(app)
 
     app.use(cors())
@@ -31,22 +37,39 @@ class Server {
       res.send('Welcome to remix-simulator')
     })
 
-    if (this.rpcOnly) {
+    if (cliOptions.rpc) {
       app.use((req, res) => {
+        if (req && req.body && (req.body.method === 'eth_sendTransaction' || req.body.method === 'eth_call')) {
+          log('Receiving call/transaction:')
+          log(req.body.params)
+        }
         this.provider.sendAsync(req.body, (err, jsonResponse) => {
           if (err) {
+            error(err)
             return res.send(JSON.stringify({ error: err }))
           }
+          if (req && req.body && (req.body.method === 'eth_sendTransaction' || req.body.method === 'eth_call')) {
+            log(jsonResponse)
+          }
           res.send(jsonResponse)
         })
       })
     } else {
       wsApp.app.ws('/', (ws, req) => {
         ws.on('message', (msg) => {
-          this.provider.sendAsync(JSON.parse(msg.toString()), (err, jsonResponse) => {
+          const body = JSON.parse(msg.toString())
+          if (body && (body.method === 'eth_sendTransaction' || body.method === 'eth_call')) {
+            log('Receiving call/transaction:')
+            log(body.params)
+          }
+          this.provider.sendAsync(body, (err, jsonResponse) => {
             if (err) {
+              error(err)
               return ws.send(JSON.stringify({ error: err }))
             }
+            if (body && (body.method === 'eth_sendTransaction' || body.method === 'eth_call')) {
+              log(jsonResponse)
+            }
             ws.send(JSON.stringify(jsonResponse))
           })
         })
@@ -57,13 +80,14 @@ class Server {
       })
     }
 
-    app.listen(port, host, () => {
-      log('Remix Simulator listening on ws://' + host + ':' + port)
-      if (!this.rpcOnly) {
+    app.listen(cliOptions.port, cliOptions.ip, () => {
+      if (!cliOptions.rpc) {
+        log('Remix Simulator listening on ws://' + cliOptions.ip + ':' + cliOptions.port)
         log('http json-rpc is deprecated and disabled by default. To enable it use --rpc')
+      } else {
+        log('Remix Simulator listening on http://' + cliOptions.ip + ':' + cliOptions.port)
       }
     })
   }
 }
 
-module.exports = Server