diff --git a/pkg/api/api.go b/pkg/api/api.go
index 43fe2167..fa47bf0f 100644
--- a/pkg/api/api.go
+++ b/pkg/api/api.go
@@ -2,11 +2,11 @@ package api
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"github.com/GopeedLab/gopeed/pkg/api/model"
 	"github.com/GopeedLab/gopeed/pkg/base"
 	"github.com/GopeedLab/gopeed/pkg/download"
+	"github.com/GopeedLab/gopeed/pkg/util"
 	"net"
 	"net/http"
 	"reflect"
@@ -345,8 +345,8 @@ func (i *Instance) Close() *model.Result[any] {
 }
 
 type Request struct {
-	Method string   `json:"method"`
-	Params []string `json:"params"`
+	Method string `json:"method"`
+	Params []any  `json:"params"`
 }
 
 // Invoke support dynamic call method
@@ -364,6 +364,11 @@ func Invoke(instance *Instance, request *Request) (ret any) {
 	in := make([]reflect.Value, numIn)
 	for i := 0; i < numIn; i++ {
 		paramType := fn.Type().In(i)
+		arg := args[i]
+		if arg == nil {
+			in[i] = reflect.Zero(fn.Type().In(i))
+			continue
+		}
 		var param reflect.Value
 		var paramPtr any
 		if paramType.Kind() == reflect.Ptr {
@@ -373,7 +378,7 @@ func Invoke(instance *Instance, request *Request) (ret any) {
 			param = reflect.New(paramType).Elem()
 			paramPtr = param.Addr().Interface()
 		}
-		if err := json.Unmarshal([]byte(args[i]), paramPtr); err != nil {
+		if err := util.MapToStruct(arg, paramPtr); err != nil {
 			panic(err)
 		}
 		in[i] = param
diff --git a/pkg/api/api_test.go b/pkg/api/api_test.go
index b21e2492..3bc46865 100644
--- a/pkg/api/api_test.go
+++ b/pkg/api/api_test.go
@@ -10,26 +10,20 @@ import (
 var instance, _ = Create(nil)
 
 func TestInvoke(t *testing.T) {
-	doTestInvoke(t, "Info", []any{})
-	doTestInvoke(t, "GetTasks", nil)
-	doTestInvoke(t, "GetTasks", []any{})
-	doTestInvoke(t, "GetTasks", []any{nil})
-	doTestInvoke(t, "GetTasks", []any{&download.TaskFilter{}})
+	doTestInvoke(t, "Info", []any{}, model.CodeOk)
+	doTestInvoke(t, "Info1", []any{}, model.CodeError)
+	doTestInvoke(t, "CreateTask", []any{nil}, model.CodeError)
+	doTestInvoke(t, "GetTasks", nil, model.CodeError)
+	doTestInvoke(t, "GetTasks", []any{}, model.CodeError)
+	doTestInvoke(t, "GetTasks", []any{"{abc:123"}, model.CodeError)
+	doTestInvoke(t, "GetTasks", []any{&download.TaskFilter{}}, model.CodeOk)
+	doTestInvoke(t, "SwitchExtension", []any{"test", &model.SwitchExtension{Status: true}}, model.CodeError)
 }
 
-func doTestInvoke(t *testing.T, method string, params []any) *model.Result[any] {
-	reqParams := make([]string, len(params))
-	for i, p := range params {
-		bytes, err := json.Marshal(p)
-		if err != nil {
-			t.Fatal(err)
-		}
-		reqParams[i] = string(bytes)
-	}
-
+func doTestInvoke(t *testing.T, method string, params []any, expectCode model.RespCode) {
 	result := Invoke(instance, &Request{
 		Method: method,
-		Params: reqParams,
+		Params: params,
 	})
 	buf, err := json.Marshal(result)
 	if err != nil {
@@ -40,5 +34,8 @@ func doTestInvoke(t *testing.T, method string, params []any) *model.Result[any]
 	if err := json.Unmarshal(buf, &res); err != nil {
 		t.Fatal(err)
 	}
-	return &res
+
+	if res.Code != expectCode {
+		t.Fatalf("Invoke method [%s] failed, expect code [%d], got [%d], msg: %s", method, expectCode, res.Code, res.Msg)
+	}
 }
diff --git a/ui/flutter/lib/api/entry/libgopeed_boot_native.dart b/ui/flutter/lib/api/entry/libgopeed_boot_native.dart
index dd42d3cd..fa693d80 100644
--- a/ui/flutter/lib/api/entry/libgopeed_boot_native.dart
+++ b/ui/flutter/lib/api/entry/libgopeed_boot_native.dart
@@ -62,14 +62,7 @@ class LibgopeedBootNative
     List<dynamic> params,
     T Function(dynamic json)? fromJsonT,
   ) async {
-    final invokeRequest = InvokeRequest(
-        method: method,
-        params: params.map((e) {
-          if (e.toJson != null) {
-            return jsonEncode(e.toJson());
-          }
-          return jsonEncode(e);
-        }).toList());
+    final invokeRequest = InvokeRequest(method: method, params: params);
     final resp = await _libgopeedAbi.invoke(jsonEncode(invokeRequest));
     final result =
         Result<T>.fromJson(jsonDecode(resp), fromJsonT ??= (json) => null as T);
@@ -172,7 +165,7 @@ class LibgopeedBootNative
   @override
   Future<List<Task>> getTasks(TaskFilter? filter) async {
     return _invoke<List<Task>>("GetTasks", _parseTaskFilter(filter),
-        (json) => json.map((e) => Task.fromJson(e)).toList());
+        (json) => (json as List).map((e) => Task.fromJson(e)).toList());
   }
 
   @override
@@ -200,7 +193,7 @@ class LibgopeedBootNative
   @override
   Future<List<Extension>> getExtensions() async {
     return _invoke<List<Extension>>("GetExtensions", [],
-        (json) => json.map((e) => Extension.fromJson(e)).toList());
+        (json) => (json as List).map((e) => Extension.fromJson(e)).toList());
   }
 
   @override
diff --git a/ui/flutter/lib/api/entry/libgopeed_boot_web.dart b/ui/flutter/lib/api/entry/libgopeed_boot_web.dart
index 29e9d166..942e90e7 100644
--- a/ui/flutter/lib/api/entry/libgopeed_boot_web.dart
+++ b/ui/flutter/lib/api/entry/libgopeed_boot_web.dart
@@ -125,8 +125,7 @@ class LibgopeedBootWeb
 
   @override
   Future<void> pauseTask(String id) async {
-    await _fetch<void>(
-        () => _dio.put("$_apiPrefix/tasks/$id/pause", data: {}), null);
+    await _fetch<void>(() => _dio.put("$_apiPrefix/tasks/$id/pause"), null);
   }
 
   @override
@@ -139,8 +138,7 @@ class LibgopeedBootWeb
 
   @override
   Future<void> continueTask(String id) async {
-    await _fetch<void>(
-        () => _dio.put("$_apiPrefix/tasks/$id/continue", data: {}), null);
+    await _fetch<void>(() => _dio.put("$_apiPrefix/tasks/$id/continue"), null);
   }
 
   @override
diff --git a/ui/flutter/lib/api/native/model/invoke_request.dart b/ui/flutter/lib/api/native/model/invoke_request.dart
index b697670e..56bee9df 100644
--- a/ui/flutter/lib/api/native/model/invoke_request.dart
+++ b/ui/flutter/lib/api/native/model/invoke_request.dart
@@ -5,7 +5,7 @@ part 'invoke_request.g.dart';
 @JsonSerializable()
 class InvokeRequest {
   String method;
-  List<String> params;
+  List<dynamic> params;
 
   InvokeRequest({
     this.method = '',