diff --git a/client.go b/client.go
index 7ccdaa2..f60c72d 100644
--- a/client.go
+++ b/client.go
@@ -127,7 +127,7 @@ func (c *Client) CreateServer(name, description string) (*Server, error) {
 	server := &Server{}
 	server.Client = c
 
-	data, err := c.Request("POST", "/servers/create", []byte("{\"name\": \""+name+"\", \"description\": \""+description+"\", \"nonce\": \""+genULID()+"\"}"))
+	data, err := c.Request("POST", "/servers/create", []byte("{\"name\":\""+name+"\",\"description\":\""+description+"\",\"nonce\":\""+genULID()+"\"}"))
 
 	if err != nil {
 		return server, err
diff --git a/http.go b/http.go
index 06e31e3..159b786 100644
--- a/http.go
+++ b/http.go
@@ -27,10 +27,6 @@ func (c Client) Request(method, path string, data []byte) ([]byte, error) {
 		return []byte{}, err
 	}
 
-	if !(resp.StatusCode >= 200 && resp.StatusCode < 300) {
-		return []byte{}, fmt.Errorf(resp.Status)
-	}
-
 	defer resp.Body.Close()
 	body, err := ioutil.ReadAll(resp.Body)
 
@@ -38,5 +34,9 @@ func (c Client) Request(method, path string, data []byte) ([]byte, error) {
 		return []byte{}, err
 	}
 
+	if !(resp.StatusCode >= 200 && resp.StatusCode < 300) {
+		return []byte{}, fmt.Errorf("%s: %s", resp.Status, body)
+	}
+
 	return body, nil
 }
diff --git a/server.go b/server.go
index bbd55b8..3fc9ad2 100644
--- a/server.go
+++ b/server.go
@@ -42,26 +42,26 @@ type SystemMessages struct {
 }
 
 // Calculate creation date and edit the struct.
-func (c *Server) CalculateCreationDate() error {
-	ulid, err := ulid.Parse(c.Id)
+func (s *Server) CalculateCreationDate() error {
+	ulid, err := ulid.Parse(s.Id)
 
 	if err != nil {
 		return err
 	}
 
-	c.CreatedAt = time.UnixMilli(int64(ulid.Time()))
+	s.CreatedAt = time.UnixMilli(int64(ulid.Time()))
 	return nil
 }
 
 // Edit server.
-func (c Server) Edit(es *EditServer) error {
+func (s Server) Edit(es *EditServer) error {
 	data, err := json.Marshal(es)
 
 	if err != nil {
 		return err
 	}
 
-	_, err = c.Client.Request("PATCH", "/servers/"+c.Id, data)
+	_, err = s.Client.Request("PATCH", "/servers/"+s.Id, data)
 
 	if err != nil {
 		return err
@@ -73,8 +73,8 @@ func (c Server) Edit(es *EditServer) error {
 // Delete / leave server.
 // If the server not created by client, it will leave.
 // Otherwise it will be deleted.
-func (c Server) Delete() error {
-	_, err := c.Client.Request("DELETE", "/servers/"+c.Id, []byte{})
+func (s Server) Delete() error {
+	_, err := s.Client.Request("DELETE", "/servers/"+s.Id, []byte{})
 
 	if err != nil {
 		return err
@@ -82,3 +82,43 @@ func (c Server) Delete() error {
 
 	return nil
 }
+
+// Create a new text-channel.
+func (s Server) CreateTextChannel(name, description string) (*Channel, error) {
+	channel := &Channel{}
+	channel.Client = s.Client
+
+	data, err := s.Client.Request("POST", "/servers/"+s.Id+"/channels", []byte("{\"type\":\"Text\",\"name\":\""+name+"\",\"description\":\""+description+"\",\"nonce\":\""+genULID()+"\"}"))
+
+	if err != nil {
+		return channel, err
+	}
+
+	err = json.Unmarshal(data, channel)
+
+	if err != nil {
+		return channel, err
+	}
+
+	return channel, nil
+}
+
+// Create a new voice-channel.
+func (s Server) CreateVoiceChannel(name, description string) (*Channel, error) {
+	channel := &Channel{}
+	channel.Client = s.Client
+
+	data, err := s.Client.Request("POST", "/servers/"+s.Id+"/channels", []byte("{\"type\":\"Voice\",\"name\":\""+name+"\",\"description\":\""+description+"\",\"nonce\":\""+genULID()+"\"}"))
+
+	if err != nil {
+		return channel, err
+	}
+
+	err = json.Unmarshal(data, channel)
+
+	if err != nil {
+		return channel, err
+	}
+
+	return channel, nil
+}