diff --git a/cmd/generate.go b/cmd/generate.go
index 9092fd6..92092c3 100644
--- a/cmd/generate.go
+++ b/cmd/generate.go
@@ -64,6 +64,10 @@ func init() {
 }
 
 func BootstrapChainConf() {
+	if _, err := os.Stat(conf.UserHome + "/.telescope/conf.d/" + ChainName + ".toml"); !os.IsNotExist(err) {
+		fmt.Printf("config file for chain %s exits", ChainName)
+		os.Exit(1)
+	}
 	for {
 		fmt.Fprint(os.Stderr, "Add new chain "+ChainName+" ?(Y/n): ")
 		s, _ = r.ReadString('\n')
diff --git a/cmd/verify.go b/cmd/verify.go
index ba6c487..91a9583 100644
--- a/cmd/verify.go
+++ b/cmd/verify.go
@@ -7,6 +7,8 @@ package cmd
 import (
 	"fmt"
 
+	"github.com/gadost/telescope/conf"
+	"github.com/gadost/telescope/watcher"
 	"github.com/spf13/cobra"
 )
 
@@ -16,11 +18,34 @@ var verifyCmd = &cobra.Command{
 	Short: "verify configs",
 	Long:  ``,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("verify called")
+		Verify()
 	},
 }
 
 func init() {
 	configCmd.AddCommand(verifyCmd)
-	verifyCmd.Flags().StringVarP(&ChainName, "chain", "c", "", "Chain name")
+	verifyCmd.PersistentFlags().StringVarP(&c, "conf", "c", conf.UserHome+"/.telescope/conf.d", "Configurations directory")
+}
+
+func Verify() {
+	cfg, chains := conf.ConfLoad(c)
+	for _, chainName := range chains {
+		if cfg.Chain[chainName].Info.Github != "" {
+
+			repoInfo := watcher.Parse(cfg.Chain[chainName].Info.Github)
+			if repoInfo.Domain == "" || repoInfo.Owner == "" && repoInfo.RepoName == "" {
+				fmt.Printf("Can't parse %s as github repository", cfg.Chain[chainName].Info.Github)
+			}
+		}
+
+		for _, node := range cfg.Chain[chainName].Node {
+			if node.Role != "validator" && node.Role != "sentry" {
+				fmt.Printf("Can't parse node type %s , chain: %s", node.Role, chainName)
+			}
+			if node.RPC == "" {
+				fmt.Printf("empty RPC for node , chain: %s", chainName)
+			}
+		}
+	}
+
 }