diff --git a/cmd/chat-cli/api/types.go b/cmd/chat-cli/api/types.go
index 335b7d3..d5d0a78 100644
--- a/cmd/chat-cli/api/types.go
+++ b/cmd/chat-cli/api/types.go
@@ -9,16 +9,16 @@ type SessionRequest struct {
 
 // SessionResponse is the response from POST /api/v1/session.
 type SessionResponse struct {
-	SessionID string `json:"session_id"`
-	ClientID  string `json:"client_id"`
+	SessionID string `json:"sessionId"`
+	ClientID  string `json:"clientId"`
 	Nick      string `json:"nick"`
 	Token     string `json:"token"`
 }
 
 // StateResponse is the response from GET /api/v1/state.
 type StateResponse struct {
-	SessionID string   `json:"session_id"`
-	ClientID  string   `json:"client_id"`
+	SessionID string   `json:"sessionId"`
+	ClientID  string   `json:"clientId"`
 	Nick      string   `json:"nick"`
 	Channels  []string `json:"channels"`
 }
@@ -59,7 +59,7 @@ type Channel struct {
 	Name      string `json:"name"`
 	Topic     string `json:"topic"`
 	Members   int    `json:"members"`
-	CreatedAt string `json:"created_at"`
+	CreatedAt string `json:"createdAt"`
 }
 
 // ServerInfo is the response from GET /api/v1/server.