diff --git a/libs/remix-simulator/bin/ethsim b/libs/remix-simulator/bin/ethsim
index a6f56641ee..607cabbe9c 100755
--- a/libs/remix-simulator/bin/ethsim
+++ b/libs/remix-simulator/bin/ethsim
@@ -20,18 +20,21 @@ program
   })
 
 program
-  .option('-p, --port [port]', 'specify port')
-  .option('-b, --ip [host]', 'specify host')
-  .option('-c, --coinbase [coinbase]', 'specify host')
-  .option('--rpc', 'run rpc server only')
-  .option('--details', 'display payloads for every requests and their responses')
-  .parse(process.argv)
+  .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(() => {
+    const Server = require('../src/server')
+    const server = new Server({
+      coinbase: program.coinbase,
+      rpc: program.rpc,
+      logDetails: program.details
+    })
+    server.start(program.host, program.port)
+  })
 
-const Server = require('../src/server')
-const server = new Server({
-  coinbase: program.coinbase || "0x0000000000000000000000000000000000000000",
-  rpc: program.rpc,
-  logDetails: program.details
-})
-server.start(program.host || '127.0.0.1', program.port || 8545)
+program.parse(process.argv)
 
diff --git a/package.json b/package.json
index b9bb6e82cd..304369daab 100644
--- a/package.json
+++ b/package.json
@@ -105,6 +105,7 @@
     "nightwatch_local_providers": "yarn run build:e2e && nightwatch --config dist/apps/remix-ide-e2e/nightwatch.js dist/apps/remix-ide-e2e/src/tests/providers.test.js --env=chromeDesktop",
     "onchange": "onchange apps/remix-ide/build/app.js -- npm-run-all lint",
     "remixd": "nx build remixd && chmod +x dist/libs/remixd/src/bin/remixd.js && dist/libs/remixd/src/bin/remixd.js --remix-ide http://127.0.0.1:8080",
+    "simulator": "nx build remix-simulator && chmod +x dist/libs/remix-simulator/bin/ethsim && dist/libs/remix-simulator/bin/ethsim start --rpc",
     "selenium": "selenium-standalone start",
     "selenium-install": "selenium-standalone install",
     "sourcemap": "exorcist --root ../ apps/remix-ide/build/app.js.map > apps/remix-ide/build/app.js",