diff --git a/anthropic.go b/anthropic.go
index 0543b1c..fb881a0 100644
--- a/anthropic.go
+++ b/anthropic.go
@@ -87,7 +87,7 @@ func (a anthropic) requestToAnthropicRequest(req Request) anth.MessagesRequest {
 		}
 	}
 
-	for _, tool := range req.Toolbox {
+	for _, tool := range req.Toolbox.funcs {
 		res.Tools = append(res.Tools, anth.ToolDefinition{
 			Name:        tool.Name,
 			Description: tool.Description,
diff --git a/google.go b/google.go
index 778f389..3829ec2 100644
--- a/google.go
+++ b/google.go
@@ -30,7 +30,7 @@ func (g google) requestToGoogleRequest(in Request, model *genai.GenerativeModel)
 		res = append(res, genai.Text(c.Text))
 	}
 
-	for _, tool := range in.Toolbox {
+	for _, tool := range in.Toolbox.funcs {
 		panic("google ToolBox is todo" + tool.Name)
 
 		/*
diff --git a/llm.go b/llm.go
index cb4b99a..fee880f 100644
--- a/llm.go
+++ b/llm.go
@@ -50,7 +50,6 @@ type Response struct {
 
 type ChatCompletion interface {
 	ChatComplete(ctx context.Context, req Request) (Response, error)
-	SplitLongString(ctx context.Context, input string) ([]string, error)
 }
 
 type LLM interface {
diff --git a/openai.go b/openai.go
index 21ad71b..d228c57 100644
--- a/openai.go
+++ b/openai.go
@@ -57,7 +57,7 @@ func (o openaiImpl) requestToOpenAIRequest(request Request) oai.ChatCompletionRe
 		res.Messages = append(res.Messages, m)
 	}
 
-	for _, tool := range request.Toolbox {
+	for _, tool := range request.Toolbox.funcs {
 		res.Tools = append(res.Tools, oai.Tool{
 			Type: "function",
 			Function: &oai.FunctionDefinition{