diff --git a/internal/chatlog/mcp/const.go b/internal/chatlog/mcp/const.go
index 35ffe63..64ba277 100644
--- a/internal/chatlog/mcp/const.go
+++ b/internal/chatlog/mcp/const.go
@@ -26,6 +26,7 @@ var (
 					"description": "联系人的搜索关键词，可以是姓名、备注名或ID。",
 				},
 			},
+			Required: []string{"query"},
 		},
 	}
 
@@ -40,6 +41,7 @@ var (
 					"description": "群聊的搜索关键词，可以是群名称、群ID或相关描述",
 				},
 			},
+			Required: []string{"query"},
 		},
 	}
 
@@ -67,6 +69,7 @@ var (
 					"description": "交谈对象，可以是联系人或群聊。支持使用ID、昵称、备注名等进行查询。",
 				},
 			},
+			Required: []string{"time", "talker"},
 		},
 	}
 
diff --git a/internal/mcp/tool.go b/internal/mcp/tool.go
index 5cf3cce..1975740 100644
--- a/internal/mcp/tool.go
+++ b/internal/mcp/tool.go
@@ -92,8 +92,9 @@ type Tool struct {
 }
 
 type ToolSchema struct {
-	Type       string `json:"type"`
-	Properties M      `json:"properties"`
+	Type       string   `json:"type"`
+	Properties M        `json:"properties"`
+	Required   []string `json:"required,omitempty"`
 }
 
 //	{