diff --git a/api/api.go b/api/api.go
index 0ee522a..2c233c2 100644
--- a/api/api.go
+++ b/api/api.go
@@ -19,9 +19,30 @@ type Body struct {
 	Port     string `json:"Port"`
 }
 
-func Request(body interface{}, zoneName string, serverId string) error {
-	client := &http.Client{Timeout: 10 * time.Second}
+func Request(body interface{}, zoneName string, serverName string) error {
+	scv := &config.Scv{}
+	current, _ := user.Current()
+	dir := filepath.Join(current.HomeDir, "scv.json")
+	config.Load(scv, dir)
 
+	if scv.AccessToken == "" || scv.AccessTokenSecret == "" {
+		message := fmt.Sprintf("Check scv.json, AccessToken is %s, AccessTokenSecret is %s", scv.AccessToken, scv.AccessTokenSecret)
+		return errors.New(message)
+	}
+
+	serverId := ""
+	for i := 0; i < len(scv.Servers); i++ {
+		if scv.Servers[i].ZoneName == zoneName && scv.Servers[i].Name == serverName {
+			serverId = scv.Servers[i].ID
+		}
+	}
+	logger.Debug(fmt.Sprintf("Found ServerID is %s", serverId))
+
+	if serverId == "" {
+		return errors.New(fmt.Sprintf("ServerID is not found by ZoneName %s and ServerName %s", zoneName, serverName))
+	}
+
+	client := &http.Client{Timeout: 10 * time.Second}
 	scheme := "https"
 	host := "secure.sakura.ad.jp"
 	path := "/cloud/zone/" + zoneName + "/api/cloud/1.1/server/" + serverId + "/vnc/proxy"
@@ -33,16 +54,6 @@ func Request(body interface{}, zoneName string, serverId string) error {
 		return err
 	}
 
-	scv := &config.Scv{}
-	current, _ := user.Current()
-	dir := filepath.Join(current.HomeDir, "scv.json")
-	config.Load(scv, dir)
-
-	if scv.AccessToken == "" || scv.AccessTokenSecret == "" {
-		message := fmt.Sprintf("Check scv.json, AccessToken is %s, AccessTokenSecret is %s", scv.AccessToken, scv.AccessTokenSecret)
-		return errors.New(message)
-	}
-
 	req.SetBasicAuth(scv.AccessToken, scv.AccessTokenSecret)
 	resp, err := client.Do(req)
 	if err != nil {
diff --git a/config/config.go b/config/config.go
index ba6dc0e..5d326d4 100644
--- a/config/config.go
+++ b/config/config.go
@@ -12,9 +12,9 @@ type Scv struct {
 }
 
 type Server struct {
-	Name string `json:"name"`
-	Zone string `json:"zone"`
-	ID   string `json:"id"`
+	Name     string `json:"name"`
+	ZoneName string `json:"zone_name"`
+	ID       string `json:"id"`
 }
 
 func Load(scv *Scv, filePath string) error {
diff --git a/config/config_test.go b/config/config_test.go
deleted file mode 100644
index aed625d..0000000
--- a/config/config_test.go
+++ /dev/null
@@ -1,8 +0,0 @@
-package config
-
-import (
-	"testing"
-)
-
-func TestConfig(t *testing.T) {
-}
diff --git a/scv.sample.json b/scv.sample.json
index db453ee..c403810 100644
--- a/scv.sample.json
+++ b/scv.sample.json
@@ -2,7 +2,7 @@
   "access_token": "xxxx",
   "access_token_secret": "xxxx",
   "servers": [
-    { "name": "ubuntu16.04", "zone": "is1a", "id": "999900000001" },
-    { "name": "centos6.9",   "zone": "is1b", "id": "999900000002" }
+    { "zone_name": "is1a", "id": "1129XXXXXXX1", "name": "ubuntu16.04" },
+    { "zone_name": "is1b", "id": "1129XXXXXXX2", "name": "centos6.9" }
   ]
 }