diff --git a/quickstart/eino_assistant/cmd/einoagent/agent/agent.go b/quickstart/eino_assistant/cmd/einoagent/agent/agent.go
index fc4bff1..a1aed8e 100644
--- a/quickstart/eino_assistant/cmd/einoagent/agent/agent.go
+++ b/quickstart/eino_assistant/cmd/einoagent/agent/agent.go
@@ -25,12 +25,12 @@ import (
 	"os"
 	"sync"
 
-	"github.com/cloudwego/eino-examples/quickstart/eino_assistant/eino/einoagent"
-	"github.com/cloudwego/eino-examples/quickstart/eino_assistant/pkg/mem"
-	"github.com/cloudwego/eino-ext/callbacks/langfuse"
 	"github.com/cloudwego/eino/callbacks"
 	"github.com/cloudwego/eino/compose"
 	"github.com/cloudwego/eino/schema"
+
+	"github.com/cloudwego/eino-examples/quickstart/eino_assistant/eino/einoagent"
+	"github.com/cloudwego/eino-examples/quickstart/eino_assistant/pkg/mem"
 )
 
 var memory = mem.GetDefaultMemory()
@@ -121,7 +121,7 @@ func RunAgent(ctx context.Context, id string, msg string) (*schema.StreamReader[
 			conversation.Append(fullMsg)
 		}()
 
-	outter:
+	outer:
 		for {
 			select {
 			case <-ctx.Done():
@@ -131,7 +131,7 @@ func RunAgent(ctx context.Context, id string, msg string) (*schema.StreamReader[
 				chunk, err := srs[1].Recv()
 				if err != nil {
 					if errors.Is(err, io.EOF) {
-						break outter
+						break outer
 					}
 				}
 
diff --git a/quickstart/eino_assistant/cmd/einoagent/agent/server.go b/quickstart/eino_assistant/cmd/einoagent/agent/server.go
index 89df473..93b4af6 100644
--- a/quickstart/eino_assistant/cmd/einoagent/agent/server.go
+++ b/quickstart/eino_assistant/cmd/einoagent/agent/server.go
@@ -116,7 +116,7 @@ func HandleChat(ctx context.Context, c *app.RequestContext) {
 		log.Printf("[Chat] Finished chat with ID: %s\n", id)
 	}()
 
-outter:
+outer:
 	for {
 		select {
 		case <-ctx.Done():
@@ -126,11 +126,11 @@ outter:
 			msg, err := sr.Recv()
 			if errors.Is(err, io.EOF) {
 				log.Printf("[Chat] EOF received for chat ID: %s\n", id)
-				break outter
+				break outer
 			}
 			if err != nil {
 				log.Printf("[Chat] Error receiving message: %v\n", err)
-				break outter
+				break outer
 			}
 
 			err = s.Publish(&sse.Event{
@@ -138,7 +138,7 @@ outter:
 			})
 			if err != nil {
 				log.Printf("[Chat] Error publishing message: %v\n", err)
-				break outter
+				break outer
 			}
 		}
 	}
diff --git a/quickstart/eino_assistant/cmd/einoagentcli/main.go b/quickstart/eino_assistant/cmd/einoagentcli/main.go
index 50fe13b..892ac41 100644
--- a/quickstart/eino_assistant/cmd/einoagentcli/main.go
+++ b/quickstart/eino_assistant/cmd/einoagentcli/main.go
@@ -30,8 +30,6 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/cloudwego/eino-ext/callbacks/langfuse"
-	"github.com/cloudwego/eino-ext/devops"
 	"github.com/cloudwego/eino/callbacks"
 	"github.com/cloudwego/eino/compose"
 	"github.com/cloudwego/eino/schema"
@@ -189,7 +187,7 @@ func RunAgent(ctx context.Context, id string, msg string) (*schema.StreamReader[
 			conversation.Append(fullMsg)
 		}()
 
-	outter:
+	outer:
 		for {
 			select {
 			case <-ctx.Done():
@@ -199,7 +197,7 @@ func RunAgent(ctx context.Context, id string, msg string) (*schema.StreamReader[
 				chunk, err := srs[1].Recv()
 				if err != nil {
 					if errors.Is(err, io.EOF) {
-						break outter
+						break outer
 					}
 				}