make toolbox optional

openai.go

@@ -3,8 +3,9 @@ package go_llm
 import (
 	"context"
 	"fmt"
-	oai "github.com/sashabaranov/go-openai"
 	"strings"
+
+	oai "github.com/sashabaranov/go-openai"
 )
 
 type openaiImpl struct {
@@ -57,18 +58,20 @@ func (o openaiImpl) requestToOpenAIRequest(request Request) oai.ChatCompletionRe
 		res.Messages = append(res.Messages, m)
 	}
 
-	for _, tool := range request.Toolbox.funcs {
-		res.Tools = append(res.Tools, oai.Tool{
-			Type: "function",
-			Function: &oai.FunctionDefinition{
-				Name:        tool.Name,
-				Description: tool.Description,
-				Strict:      tool.Strict,
-				Parameters:  tool.Parameters.Definition(),
-			},
-		})
+	if request.Toolbox != nil {
+		for _, tool := range request.Toolbox.funcs {
+			res.Tools = append(res.Tools, oai.Tool{
+				Type: "function",
+				Function: &oai.FunctionDefinition{
+					Name:        tool.Name,
+					Description: tool.Description,
+					Strict:      tool.Strict,
+					Parameters:  tool.Parameters.Definition(),
+				},
+			})
 
-		fmt.Println("tool:", tool.Name, tool.Description, tool.Strict, tool.Parameters.Definition())
+			fmt.Println("tool:", tool.Name, tool.Description, tool.Strict, tool.Parameters.Definition())
+		}
 	}
 
 	if request.Temperature != nil {