diff --git a/sztp-agent/cmd/run.go b/sztp-agent/cmd/run.go
index 8d2792ca..f3b02c1f 100644
--- a/sztp-agent/cmd/run.go
+++ b/sztp-agent/cmd/run.go
@@ -9,6 +9,10 @@ Copyright (C) 2022 Red Hat.
 package cmd
 
 import (
+	"fmt"
+	"net/url"
+	"os"
+
 	"github.com/opiproject/sztp/sztp-agent/pkg/secureagent"
 	"github.com/spf13/cobra"
 )
@@ -34,6 +38,27 @@ func Run() *cobra.Command {
 		Use:   "run",
 		Short: "Exec the run command",
 		RunE: func(_ *cobra.Command, _ []string) error {
+			arrayChecker := []string{devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert}
+			if bootstrapURL != "" && dhcpLeaseFile != "" {
+				return fmt.Errorf("'--bootstrap-url' and '--dhcp-lease-file' are mutualy exclusive")
+			}
+			if bootstrapURL == "" && dhcpLeaseFile == "" {
+				return fmt.Errorf("'--bootstrap-url' or '--dhcp-lease-file' is required")
+			}
+			if dhcpLeaseFile != "" {
+				arrayChecker = append(arrayChecker, dhcpLeaseFile)
+			}
+			if bootstrapURL != "" {
+				_, err := url.ParseRequestURI(bootstrapURL)
+				cobra.CheckErr(err)
+			}
+			for _, filePath := range arrayChecker {
+				info, err := os.Stat(filePath)
+				cobra.CheckErr(err)
+				if info.IsDir() {
+					return fmt.Errorf("must not be folder: %q", filePath)
+				}
+			}
 			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert)
 			return a.RunCommand()
 		},
@@ -42,13 +67,13 @@ func Run() *cobra.Command {
 	flags := cmd.Flags()
 	// TODO this options should be retrieved automatically instead of requests in the agent
 	// Opened discussion to define the procedure: https://github.com/opiproject/sztp/issues/2
-	flags.StringVar(&bootstrapURL, "bootstrap-url", "", "Bootstrap server URL")
-	flags.StringVar(&serialNumber, "serial-number", "", "Device's serial number")
-	flags.StringVar(&dhcpLeaseFile, "dhcp-lease-file", "/var/lib/dhclient/dhclient.leases", "Device's dhclient leases file")
-	flags.StringVar(&devicePassword, "device-password", "", "Device's password")
-	flags.StringVar(&devicePrivateKey, "device-private-key", "", "Device's private key")
-	flags.StringVar(&deviceEndEntityCert, "device-end-entity-cert", "", "Device's End Entity cert")
-	flags.StringVar(&bootstrapTrustAnchorCert, "bootstrap-trust-anchor-cert", "", "Bootstrap server trust anchor Cert")
+	flags.StringVar(&bootstrapURL, "bootstrap-url", "", "Bootstrap server URL. Mutually exclusive with '--dhcp-lease-file'")
+	flags.StringVar(&serialNumber, "serial-number", "", "Device's serial number. If empty, discover via SMBIOS")
+	flags.StringVar(&dhcpLeaseFile, "dhcp-lease-file", "", "Device's dhclient leases file. Mutually exclusive with '--bootstrap-url'")
+	flags.StringVar(&devicePassword, "device-password", "my-secret", "Device's password")
+	flags.StringVar(&devicePrivateKey, "device-private-key", "/certs/private_key.pem", "Device's private key")
+	flags.StringVar(&deviceEndEntityCert, "device-end-entity-cert", "/certs/my_cert.pem", "Device's End Entity cert")
+	flags.StringVar(&bootstrapTrustAnchorCert, "bootstrap-trust-anchor-cert", "/certs/opi.pem", "Bootstrap server trust anchor Cert")
 
 	return cmd
 }