diff --git a/README.md b/README.md
index 282f58e..003009b 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ $ curl -sL https://github.com/Uptimedog/Agent/releases/download/x.x.x/agent_x.x.
 Start the agent and it will auto register itself using your API key
 
 ```zsh
-$ ./agent run --api_server uptimedog.io --api_key xxxxxxxx > agent.log
+$ ./agent run --api_server https://uptimedog.io --api_key xxxxxxxx > agent.log
 ```
 
 
diff --git a/cmd/root.go b/cmd/root.go
index 4d64e0f..a19584c 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -34,6 +34,13 @@ func init() {
 		"",
 		"Your Uptimedog API Key",
 	)
+	rootCmd.PersistentFlags().StringVarP(
+		&APIKey,
+		"api_server",
+		"a",
+		"https://uptimedog.io",
+		"Uptimedog remote server",
+	)
 }
 
 // Execute runs cmd tool