diff --git a/backend/ai-core/cmd/main.go b/backend/ai-core/cmd/main.go
index 77409c2..4f44efc 100644
--- a/backend/ai-core/cmd/main.go
+++ b/backend/ai-core/cmd/main.go
@@ -192,16 +192,17 @@ func main() {
 	var asrProvider llm.ASRProvider
 	if getEnvBool("ENABLE_TOOLS", true) {
 		// 11 个共享通用插件 — 注册其工具到统一注册中心
+		registerPlugins(toolRegistry)
+		for _, t := range pluginFile.NewFilePlugin(dataDir).Tools() { toolRegistry.Register(t) }
+		for _, t := range pluginHTTP.NewHTTPPlugin().Tools() { toolRegistry.Register(t) }
+		// 优先使用本地 SearXNG，不可用时回退 DuckDuckGo
 		searxngURL := getEnv("SEARXNG_URL", "")
 		if searxngURL != "" {
+			toolRegistry.Register(wrapTool(tools.NewWebSearchToolWithURL(searxngURL), "web_search", "Search the web via SearXNG", "search"))
 		} else {
+			for _, t := range pluginWS.NewWebSearchPlugin().Tools() { toolRegistry.Register(t) }
 		}
-
-	registerPlugins(toolRegistry)
-	for _, t := range pluginFile.NewFilePlugin(dataDir).Tools() { toolRegistry.Register(t) }
-	for _, t := range pluginHTTP.NewHTTPPlugin().Tools() { toolRegistry.Register(t) }
-	for _, t := range pluginWS.NewWebSearchPlugin().Tools() { toolRegistry.Register(t) }
-	for _, t := range pluginWF.NewWebFetchPlugin().Tools() { toolRegistry.Register(t) }
+		for _, t := range pluginWF.NewWebFetchPlugin().Tools() { toolRegistry.Register(t) }
 		// ai-core 专属工具 — 通过 sdk.Tool 适配器注册
 		if iotClient != nil {
 			toolRegistry.Register(wrapTool(tools.NewIoTQueryTool(iotClient), "iot_query", "Query IoT Devices", "iot"))