From 35a2843ac23850d5b73179b739b861ff1eacd086 Mon Sep 17 00:00:00 2001
From: Hyu <chenhyudada@gmail.com>
Date: Sat, 25 Jul 2026 14:40:37 +0800
Subject: [PATCH] fix(seo): improve docs indexing and localization (#103)

Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>
---
 docs.json                              |  285 ++++
 openapi/service-api-en.json            |  360 ++---
 package.json                           |    1 +
 robots.txt                             |    6 +
 scripts/generate-alternate-sitemap.mjs |   75 +
 sitemap-alternates.xml                 | 1746 ++++++++++++++++++++++++
 tests/seo.test.mjs                     |   88 ++
 7 files changed, 2381 insertions(+), 180 deletions(-)
 create mode 100644 robots.txt
 create mode 100644 scripts/generate-alternate-sitemap.mjs
 create mode 100644 sitemap-alternates.xml

diff --git a/docs.json b/docs.json
index c69efa06d..063d57376 100644
--- a/docs.json
+++ b/docs.json
@@ -228,6 +228,291 @@
     {
       "source": "/app",
       "destination": "/en/insight/guide"
+    },
+    {
+      "source": "/en/api-reference/system/获取系统信息",
+      "destination": "/en/api-reference/system/get-system-information",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/model-providers/获取所有供应商",
+      "destination": "/en/api-reference/model-providers/list-all-model-providers",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/model-providers/创建供应商",
+      "destination": "/en/api-reference/model-providers/create-a-model-provider",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/model-providers/获取单个供应商",
+      "destination": "/en/api-reference/model-providers/get-a-model-provider",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/model-providers/更新供应商",
+      "destination": "/en/api-reference/model-providers/update-a-model-provider",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/model-providers/删除供应商",
+      "destination": "/en/api-reference/model-providers/delete-a-model-provider",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/llm-models/获取所有-llm-模型",
+      "destination": "/en/api-reference/llm-models/list-all-llm-models",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/llm-models/创建-llm-模型",
+      "destination": "/en/api-reference/llm-models/create-an-llm-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/llm-models/获取单个-llm-模型",
+      "destination": "/en/api-reference/llm-models/get-an-llm-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/llm-models/更新-llm-模型",
+      "destination": "/en/api-reference/llm-models/update-an-llm-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/llm-models/删除-llm-模型",
+      "destination": "/en/api-reference/llm-models/delete-an-llm-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/llm-models/测试-llm-模型",
+      "destination": "/en/api-reference/llm-models/test-an-llm-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/embedding-models/获取所有向量模型",
+      "destination": "/en/api-reference/embedding-models/list-all-embedding-models",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/embedding-models/创建向量模型",
+      "destination": "/en/api-reference/embedding-models/create-an-embedding-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/embedding-models/获取单个向量模型",
+      "destination": "/en/api-reference/embedding-models/get-an-embedding-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/embedding-models/更新向量模型",
+      "destination": "/en/api-reference/embedding-models/update-an-embedding-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/embedding-models/删除向量模型",
+      "destination": "/en/api-reference/embedding-models/delete-an-embedding-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/embedding-models/测试向量模型",
+      "destination": "/en/api-reference/embedding-models/test-an-embedding-model",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/bots/获取所有机器人",
+      "destination": "/en/api-reference/bots/list-all-bots",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/bots/创建机器人",
+      "destination": "/en/api-reference/bots/create-a-bot",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/bots/获取单个机器人",
+      "destination": "/en/api-reference/bots/get-a-bot",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/bots/更新机器人",
+      "destination": "/en/api-reference/bots/update-a-bot",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/bots/删除机器人",
+      "destination": "/en/api-reference/bots/delete-a-bot",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/bots/获取机器人事件日志",
+      "destination": "/en/api-reference/bots/get-bot-event-logs",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/bots/通过机器人发送消息",
+      "destination": "/en/api-reference/bots/send-a-message-through-a-bot",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/获取所有流水线",
+      "destination": "/en/api-reference/pipelines/list-all-pipelines",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/创建流水线",
+      "destination": "/en/api-reference/pipelines/create-a-pipeline",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/获取流水线元数据",
+      "destination": "/en/api-reference/pipelines/get-pipeline-metadata",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/获取单个流水线",
+      "destination": "/en/api-reference/pipelines/get-a-pipeline",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/更新流水线",
+      "destination": "/en/api-reference/pipelines/update-a-pipeline",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/删除流水线",
+      "destination": "/en/api-reference/pipelines/delete-a-pipeline",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/复制流水线",
+      "destination": "/en/api-reference/pipelines/copy-a-pipeline",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/获取流水线扩展配置",
+      "destination": "/en/api-reference/pipelines/get-pipeline-extension-configuration",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/pipelines/更新流水线扩展配置",
+      "destination": "/en/api-reference/pipelines/update-pipeline-extension-configuration",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/获取所有知识库",
+      "destination": "/en/api-reference/knowledge-bases/list-all-knowledge-bases",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/创建知识库",
+      "destination": "/en/api-reference/knowledge-bases/create-a-knowledge-base",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/获取单个知识库",
+      "destination": "/en/api-reference/knowledge-bases/get-a-knowledge-base",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/更新知识库",
+      "destination": "/en/api-reference/knowledge-bases/update-a-knowledge-base",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/删除知识库",
+      "destination": "/en/api-reference/knowledge-bases/delete-a-knowledge-base",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/获取知识库文件列表",
+      "destination": "/en/api-reference/knowledge-bases/list-knowledge-base-files",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/将文件存入知识库",
+      "destination": "/en/api-reference/knowledge-bases/add-a-file-to-a-knowledge-base",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/从知识库删除文件",
+      "destination": "/en/api-reference/knowledge-bases/remove-a-file-from-a-knowledge-base",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-bases/检索知识库",
+      "destination": "/en/api-reference/knowledge-bases/retrieve-from-a-knowledge-base",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-engines/获取可用知识引擎列表",
+      "destination": "/en/api-reference/knowledge-engines/list-available-knowledge-engines",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-engines/获取知识引擎创建配置模式",
+      "destination": "/en/api-reference/knowledge-engines/get-the-knowledge-engine-creation-schema",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/knowledge-engines/获取知识引擎检索配置模式",
+      "destination": "/en/api-reference/knowledge-engines/get-the-knowledge-engine-retrieval-schema",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/parsers/获取可用解析器列表",
+      "destination": "/en/api-reference/parsers/list-available-parsers",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/files/上传图片",
+      "destination": "/en/api-reference/files/upload-an-image",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/files/上传文档",
+      "destination": "/en/api-reference/files/upload-a-document",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/获取已安装插件列表",
+      "destination": "/en/api-reference/plugins/list-installed-plugins",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/获取插件详情",
+      "destination": "/en/api-reference/plugins/get-plugin-details",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/删除插件",
+      "destination": "/en/api-reference/plugins/delete-a-plugin",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/升级插件",
+      "destination": "/en/api-reference/plugins/upgrade-a-plugin",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/获取插件配置",
+      "destination": "/en/api-reference/plugins/get-plugin-configuration",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/更新插件配置",
+      "destination": "/en/api-reference/plugins/update-plugin-configuration",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/从-marketplace-安装插件",
+      "destination": "/en/api-reference/plugins/install-a-plugin-from-marketplace",
+      "permanent": true
+    },
+    {
+      "source": "/en/api-reference/plugins/从-github-安装插件",
+      "destination": "/en/api-reference/plugins/install-a-plugin-from-github",
+      "permanent": true
     }
   ],
   "navigation": {
diff --git a/openapi/service-api-en.json b/openapi/service-api-en.json
index e775076a4..8bc4dd634 100644
--- a/openapi/service-api-en.json
+++ b/openapi/service-api-en.json
@@ -79,12 +79,12 @@
         "tags": [
           "System"
         ],
-        "summary": "获取系统信息",
-        "description": "获取 LangBot 实例的版本、版本类型等基本信息。此接口无需认证。",
+        "summary": "Get system information",
+        "description": "Get basic information about the LangBot instance, including its version and release type. This endpoint does not require authentication.",
         "security": [],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -150,11 +150,11 @@
         "tags": [
           "Model Providers"
         ],
-        "summary": "获取所有供应商",
-        "description": "获取所有模型供应商列表，包含每个供应商关联的 LLM 和 Embedding 模型数量。",
+        "summary": "List all model providers",
+        "description": "List all model providers, including the number of LLM and embedding models associated with each provider.",
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -186,8 +186,8 @@
         "tags": [
           "Model Providers"
         ],
-        "summary": "创建供应商",
-        "description": "创建一个新的模型供应商。",
+        "summary": "Create a model provider",
+        "description": "Create a new model provider.",
         "requestBody": {
           "required": true,
           "content": {
@@ -200,7 +200,7 @@
         },
         "responses": {
           "200": {
-            "description": "创建成功",
+            "description": "Created successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -232,7 +232,7 @@
         "tags": [
           "Model Providers"
         ],
-        "summary": "获取单个供应商",
+        "summary": "Get a model provider",
         "parameters": [
           {
             "name": "provider_uuid",
@@ -246,7 +246,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -278,7 +278,7 @@
         "tags": [
           "Model Providers"
         ],
-        "summary": "更新供应商",
+        "summary": "Update a model provider",
         "parameters": [
           {
             "name": "provider_uuid",
@@ -310,8 +310,8 @@
         "tags": [
           "Model Providers"
         ],
-        "summary": "删除供应商",
-        "description": "删除供应商。如果还有模型引用该供应商，则无法删除。",
+        "summary": "Delete a model provider",
+        "description": "Delete a model provider. A provider cannot be deleted while it is still referenced by a model.",
         "parameters": [
           {
             "name": "provider_uuid",
@@ -328,7 +328,7 @@
             "$ref": "#/components/responses/Success"
           },
           "400": {
-            "description": "供应商仍有模型引用，无法删除",
+            "description": "The provider is still referenced by one or more models and cannot be deleted",
             "content": {
               "application/json": {
                 "schema": {
@@ -345,8 +345,8 @@
         "tags": [
           "LLM Models"
         ],
-        "summary": "获取所有 LLM 模型",
-        "description": "获取所有大语言模型列表。可通过 provider_uuid 过滤特定供应商的模型。",
+        "summary": "List all LLM models",
+        "description": "List all large language models. Use provider_uuid to filter models by provider.",
         "parameters": [
           {
             "name": "provider_uuid",
@@ -356,12 +356,12 @@
               "type": "string",
               "format": "uuid"
             },
-            "description": "按供应商 UUID 过滤"
+            "description": "Filter by provider UUID"
           }
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -393,8 +393,8 @@
         "tags": [
           "LLM Models"
         ],
-        "summary": "创建 LLM 模型",
-        "description": "创建一个新的大语言模型。模型必须关联到一个已存在的供应商。",
+        "summary": "Create an LLM model",
+        "description": "Create a new large language model. The model must be associated with an existing provider.",
         "requestBody": {
           "required": true,
           "content": {
@@ -407,7 +407,7 @@
         },
         "responses": {
           "200": {
-            "description": "创建成功",
+            "description": "Created successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -439,7 +439,7 @@
         "tags": [
           "LLM Models"
         ],
-        "summary": "获取单个 LLM 模型",
+        "summary": "Get an LLM model",
         "parameters": [
           {
             "name": "model_uuid",
@@ -453,7 +453,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -485,7 +485,7 @@
         "tags": [
           "LLM Models"
         ],
-        "summary": "更新 LLM 模型",
+        "summary": "Update an LLM model",
         "parameters": [
           {
             "name": "model_uuid",
@@ -517,7 +517,7 @@
         "tags": [
           "LLM Models"
         ],
-        "summary": "删除 LLM 模型",
+        "summary": "Delete an LLM model",
         "parameters": [
           {
             "name": "model_uuid",
@@ -541,8 +541,8 @@
         "tags": [
           "LLM Models"
         ],
-        "summary": "测试 LLM 模型",
-        "description": "向指定的 LLM 模型发送测试请求，验证模型是否可用。",
+        "summary": "Test an LLM model",
+        "description": "Send a test request to the specified LLM model to verify that it is available.",
         "parameters": [
           {
             "name": "model_uuid",
@@ -563,7 +563,7 @@
                 "properties": {
                   "prompt": {
                     "type": "string",
-                    "description": "测试用的提示文本",
+                    "description": "Prompt text to use for the test",
                     "example": "Hello"
                   }
                 }
@@ -583,8 +583,8 @@
         "tags": [
           "Embedding Models"
         ],
-        "summary": "获取所有向量模型",
-        "description": "获取所有向量模型列表。可通过 provider_uuid 过滤特定供应商的模型。",
+        "summary": "List all embedding models",
+        "description": "List all embedding models. Use provider_uuid to filter models by provider.",
         "parameters": [
           {
             "name": "provider_uuid",
@@ -594,12 +594,12 @@
               "type": "string",
               "format": "uuid"
             },
-            "description": "按供应商 UUID 过滤"
+            "description": "Filter by provider UUID"
           }
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -631,8 +631,8 @@
         "tags": [
           "Embedding Models"
         ],
-        "summary": "创建向量模型",
-        "description": "创建一个新的向量模型。模型必须关联到一个已存在的供应商。",
+        "summary": "Create an embedding model",
+        "description": "Create a new embedding model. The model must be associated with an existing provider.",
         "requestBody": {
           "required": true,
           "content": {
@@ -645,7 +645,7 @@
         },
         "responses": {
           "200": {
-            "description": "创建成功",
+            "description": "Created successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -677,7 +677,7 @@
         "tags": [
           "Embedding Models"
         ],
-        "summary": "获取单个向量模型",
+        "summary": "Get an embedding model",
         "parameters": [
           {
             "name": "model_uuid",
@@ -691,7 +691,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -723,7 +723,7 @@
         "tags": [
           "Embedding Models"
         ],
-        "summary": "更新向量模型",
+        "summary": "Update an embedding model",
         "parameters": [
           {
             "name": "model_uuid",
@@ -755,7 +755,7 @@
         "tags": [
           "Embedding Models"
         ],
-        "summary": "删除向量模型",
+        "summary": "Delete an embedding model",
         "parameters": [
           {
             "name": "model_uuid",
@@ -779,8 +779,8 @@
         "tags": [
           "Embedding Models"
         ],
-        "summary": "测试向量模型",
-        "description": "向指定的向量模型发送测试请求，验证模型是否可用。",
+        "summary": "Test an embedding model",
+        "description": "Send a test request to the specified embedding model to verify that it is available.",
         "parameters": [
           {
             "name": "model_uuid",
@@ -801,7 +801,7 @@
                 "properties": {
                   "text": {
                     "type": "string",
-                    "description": "测试用的文本",
+                    "description": "Text to use for the test",
                     "example": "Hello"
                   }
                 }
@@ -821,10 +821,10 @@
         "tags": [
           "Bots"
         ],
-        "summary": "获取所有机器人",
+        "summary": "List all bots",
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -856,7 +856,7 @@
         "tags": [
           "Bots"
         ],
-        "summary": "创建机器人",
+        "summary": "Create a bot",
         "requestBody": {
           "required": true,
           "content": {
@@ -869,7 +869,7 @@
         },
         "responses": {
           "200": {
-            "description": "创建成功",
+            "description": "Created successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -901,8 +901,8 @@
         "tags": [
           "Bots"
         ],
-        "summary": "获取单个机器人",
-        "description": "获取机器人信息，包括运行时信息（如 Webhook 地址等）。",
+        "summary": "Get a bot",
+        "description": "Get bot details, including runtime information such as the webhook URL.",
         "parameters": [
           {
             "name": "bot_uuid",
@@ -916,7 +916,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -948,7 +948,7 @@
         "tags": [
           "Bots"
         ],
-        "summary": "更新机器人",
+        "summary": "Update a bot",
         "parameters": [
           {
             "name": "bot_uuid",
@@ -980,7 +980,7 @@
         "tags": [
           "Bots"
         ],
-        "summary": "删除机器人",
+        "summary": "Delete a bot",
         "parameters": [
           {
             "name": "bot_uuid",
@@ -1004,8 +1004,8 @@
         "tags": [
           "Bots"
         ],
-        "summary": "获取机器人事件日志",
-        "description": "获取指定机器人的事件日志记录。",
+        "summary": "Get bot event logs",
+        "description": "Get event log entries for the specified bot.",
         "parameters": [
           {
             "name": "bot_uuid",
@@ -1026,12 +1026,12 @@
                 "properties": {
                   "from_index": {
                     "type": "integer",
-                    "description": "起始索引（-1 表示从最新开始）",
+                    "description": "Starting index (-1 starts from the most recent entry)",
                     "default": -1
                   },
                   "max_count": {
                     "type": "integer",
-                    "description": "最大返回数量",
+                    "description": "Maximum number of entries to return",
                     "default": 10
                   }
                 }
@@ -1041,7 +1041,7 @@
         },
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1078,8 +1078,8 @@
         "tags": [
           "Bots"
         ],
-        "summary": "通过机器人发送消息",
-        "description": "通过指定的机器人向目标发送消息。仅支持 API Key 认证。",
+        "summary": "Send a message through a bot",
+        "description": "Send a message to a target through the specified bot. This endpoint supports API Key authentication only.",
         "security": [
           {
             "ApiKeyAuth": []
@@ -1114,15 +1114,15 @@
                       "person",
                       "group"
                     ],
-                    "description": "目标类型"
+                    "description": "Target type"
                   },
                   "target_id": {
                     "type": "string",
-                    "description": "目标 ID（用户 ID 或群组 ID）"
+                    "description": "Target ID (user ID or group ID)"
                   },
                   "message_chain": {
                     "type": "array",
-                    "description": "消息链",
+                    "description": "Message chain",
                     "items": {
                       "type": "object",
                       "properties": {
@@ -1134,19 +1134,19 @@
                             "At",
                             "Voice"
                           ],
-                          "description": "消息元素类型"
+                          "description": "Message element type"
                         },
                         "text": {
                           "type": "string",
-                          "description": "文本内容（Plain 类型）"
+                          "description": "Text content (Plain type)"
                         },
                         "url": {
                           "type": "string",
-                          "description": "图片 URL（Image 类型）"
+                          "description": "Image URL (Image type)"
                         },
                         "target": {
                           "type": "string",
-                          "description": "@ 的目标 ID（At 类型）"
+                          "description": "Mention target ID (At type)"
                         }
                       }
                     },
@@ -1164,7 +1164,7 @@
         },
         "responses": {
           "200": {
-            "description": "发送成功",
+            "description": "Message sent successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -1189,7 +1189,7 @@
             }
           },
           "400": {
-            "description": "参数错误",
+            "description": "Invalid parameters",
             "content": {
               "application/json": {
                 "schema": {
@@ -1206,7 +1206,7 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "获取所有流水线",
+        "summary": "List all pipelines",
         "parameters": [
           {
             "name": "sort_by",
@@ -1233,7 +1233,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1265,7 +1265,7 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "创建流水线",
+        "summary": "Create a pipeline",
         "requestBody": {
           "required": true,
           "content": {
@@ -1278,7 +1278,7 @@
         },
         "responses": {
           "200": {
-            "description": "创建成功",
+            "description": "Created successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -1310,11 +1310,11 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "获取流水线元数据",
-        "description": "获取流水线配置的元数据描述，包括可配置的字段和类型信息。",
+        "summary": "Get pipeline metadata",
+        "description": "Get metadata describing the pipeline configuration, including configurable fields and their types.",
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1345,7 +1345,7 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "获取单个流水线",
+        "summary": "Get a pipeline",
         "parameters": [
           {
             "name": "pipeline_uuid",
@@ -1359,7 +1359,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1391,7 +1391,7 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "更新流水线",
+        "summary": "Update a pipeline",
         "parameters": [
           {
             "name": "pipeline_uuid",
@@ -1423,7 +1423,7 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "删除流水线",
+        "summary": "Delete a pipeline",
         "parameters": [
           {
             "name": "pipeline_uuid",
@@ -1447,8 +1447,8 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "复制流水线",
-        "description": "复制一个已有的流水线，生成一个新的副本。",
+        "summary": "Copy a pipeline",
+        "description": "Copy an existing pipeline to create a new one.",
         "parameters": [
           {
             "name": "pipeline_uuid",
@@ -1462,7 +1462,7 @@
         ],
         "responses": {
           "200": {
-            "description": "复制成功",
+            "description": "Copied successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -1497,8 +1497,8 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "获取流水线扩展配置",
-        "description": "获取流水线绑定的插件和 MCP 服务器配置。",
+        "summary": "Get pipeline extension configuration",
+        "description": "Get the plugins and MCP server configuration associated with a pipeline.",
         "parameters": [
           {
             "name": "pipeline_uuid",
@@ -1512,7 +1512,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1571,8 +1571,8 @@
         "tags": [
           "Pipelines"
         ],
-        "summary": "更新流水线扩展配置",
-        "description": "更新流水线绑定的插件和 MCP 服务器。",
+        "summary": "Update pipeline extension configuration",
+        "description": "Update the plugins and MCP servers associated with a pipeline.",
         "parameters": [
           {
             "name": "pipeline_uuid",
@@ -1628,10 +1628,10 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "获取所有知识库",
+        "summary": "List all knowledge bases",
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1663,7 +1663,7 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "创建知识库",
+        "summary": "Create a knowledge base",
         "requestBody": {
           "required": true,
           "content": {
@@ -1682,11 +1682,11 @@
                   },
                   "engine_plugin_id": {
                     "type": "string",
-                    "description": "知识引擎插件 ID（author/name 格式）"
+                    "description": "Knowledge engine plugin ID (author/name format)"
                   },
                   "creation_settings": {
                     "type": "object",
-                    "description": "引擎创建参数"
+                    "description": "Engine creation parameters"
                   }
                 }
               }
@@ -1695,7 +1695,7 @@
         },
         "responses": {
           "200": {
-            "description": "创建成功",
+            "description": "Created successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -1727,7 +1727,7 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "获取单个知识库",
+        "summary": "Get a knowledge base",
         "parameters": [
           {
             "name": "kb_uuid",
@@ -1741,7 +1741,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1773,7 +1773,7 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "更新知识库",
+        "summary": "Update a knowledge base",
         "parameters": [
           {
             "name": "kb_uuid",
@@ -1813,7 +1813,7 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "删除知识库",
+        "summary": "Delete a knowledge base",
         "parameters": [
           {
             "name": "kb_uuid",
@@ -1837,7 +1837,7 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "获取知识库文件列表",
+        "summary": "List knowledge base files",
         "parameters": [
           {
             "name": "kb_uuid",
@@ -1851,7 +1851,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1883,8 +1883,8 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "将文件存入知识库",
-        "description": "将已上传的文件关联到知识库并开始解析。先通过 /api/v1/files/documents 上传文件获取 file_id。",
+        "summary": "Add a file to a knowledge base",
+        "description": "Associate an uploaded file with a knowledge base and begin parsing it. First upload the file through /api/v1/files/documents to obtain a file_id.",
         "parameters": [
           {
             "name": "kb_uuid",
@@ -1908,11 +1908,11 @@
                 "properties": {
                   "file_id": {
                     "type": "string",
-                    "description": "已上传的文件 ID"
+                    "description": "Uploaded file ID"
                   },
                   "parser_plugin_id": {
                     "type": "string",
-                    "description": "指定的解析器插件 ID（可选）"
+                    "description": "Parser plugin ID to use (optional)"
                   }
                 }
               }
@@ -1921,7 +1921,7 @@
         },
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -1952,7 +1952,7 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "从知识库删除文件",
+        "summary": "Remove a file from a knowledge base",
         "parameters": [
           {
             "name": "kb_uuid",
@@ -1984,8 +1984,8 @@
         "tags": [
           "Knowledge Bases"
         ],
-        "summary": "检索知识库",
-        "description": "对知识库进行语义检索，返回相关文档片段。",
+        "summary": "Retrieve from a knowledge base",
+        "description": "Perform semantic retrieval against a knowledge base and return relevant document chunks.",
         "parameters": [
           {
             "name": "kb_uuid",
@@ -2009,11 +2009,11 @@
                 "properties": {
                   "query": {
                     "type": "string",
-                    "description": "检索查询文本"
+                    "description": "Retrieval query text"
                   },
                   "retrieval_settings": {
                     "type": "object",
-                    "description": "检索参数（如 top_k 等）",
+                    "description": "Retrieval parameters (such as top_k)",
                     "properties": {
                       "top_k": {
                         "type": "integer"
@@ -2027,7 +2027,7 @@
         },
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2061,11 +2061,11 @@
         "tags": [
           "Knowledge Engines"
         ],
-        "summary": "获取可用知识引擎列表",
-        "description": "列出所有由插件提供的知识引擎，包含其能力和配置模式。",
+        "summary": "List available knowledge engines",
+        "description": "List all plugin-provided knowledge engines, including their capabilities and configuration schemas.",
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2099,8 +2099,8 @@
         "tags": [
           "Knowledge Engines"
         ],
-        "summary": "获取知识引擎创建配置模式",
-        "description": "获取指定知识引擎的创建参数 JSON Schema。",
+        "summary": "Get the knowledge engine creation schema",
+        "description": "Get the JSON Schema for the specified knowledge engine's creation parameters.",
         "parameters": [
           {
             "name": "plugin_id",
@@ -2109,12 +2109,12 @@
             "schema": {
               "type": "string"
             },
-            "description": "插件 ID（author/name 格式）"
+            "description": "Plugin ID (author/name format)"
           }
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2145,8 +2145,8 @@
         "tags": [
           "Knowledge Engines"
         ],
-        "summary": "获取知识引擎检索配置模式",
-        "description": "获取指定知识引擎的检索参数 JSON Schema。",
+        "summary": "Get the knowledge engine retrieval schema",
+        "description": "Get the JSON Schema for the specified knowledge engine's retrieval parameters.",
         "parameters": [
           {
             "name": "plugin_id",
@@ -2155,12 +2155,12 @@
             "schema": {
               "type": "string"
             },
-            "description": "插件 ID（author/name 格式）"
+            "description": "Plugin ID (author/name format)"
           }
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2191,8 +2191,8 @@
         "tags": [
           "Parsers"
         ],
-        "summary": "获取可用解析器列表",
-        "description": "列出所有由插件提供的文件解析器。可通过 mime_type 过滤。",
+        "summary": "List available parsers",
+        "description": "List all plugin-provided file parsers. Use mime_type to filter the results.",
         "parameters": [
           {
             "name": "mime_type",
@@ -2201,12 +2201,12 @@
             "schema": {
               "type": "string"
             },
-            "description": "按 MIME 类型过滤解析器"
+            "description": "Filter parsers by MIME type"
           }
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2240,8 +2240,8 @@
         "tags": [
           "Files"
         ],
-        "summary": "上传图片",
-        "description": "上传图片文件，支持 jpg、jpeg、png、gif、webp 格式，大小限制 10MB。",
+        "summary": "Upload an image",
+        "description": "Upload an image file. Supported formats are jpg, jpeg, png, gif, and webp. The maximum file size is 10 MB.",
         "requestBody": {
           "required": true,
           "content": {
@@ -2255,7 +2255,7 @@
                   "file": {
                     "type": "string",
                     "format": "binary",
-                    "description": "图片文件"
+                    "description": "Image file"
                   }
                 }
               }
@@ -2264,7 +2264,7 @@
         },
         "responses": {
           "200": {
-            "description": "上传成功",
+            "description": "Uploaded successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -2279,7 +2279,7 @@
                       "properties": {
                         "file_key": {
                           "type": "string",
-                          "description": "文件标识符，可用于引用图片"
+                          "description": "File identifier that can be used to reference the image"
                         }
                       }
                     }
@@ -2296,8 +2296,8 @@
         "tags": [
           "Files"
         ],
-        "summary": "上传文档",
-        "description": "上传文档文件，大小限制 10MB。上传后可将 file_id 用于知识库关联。",
+        "summary": "Upload a document",
+        "description": "Upload a document file up to 10 MB. After the upload, use the file_id to associate the document with a knowledge base.",
         "requestBody": {
           "required": true,
           "content": {
@@ -2311,7 +2311,7 @@
                   "file": {
                     "type": "string",
                     "format": "binary",
-                    "description": "文档文件"
+                    "description": "Document file"
                   }
                 }
               }
@@ -2320,7 +2320,7 @@
         },
         "responses": {
           "200": {
-            "description": "上传成功",
+            "description": "Uploaded successfully",
             "content": {
               "application/json": {
                 "schema": {
@@ -2335,7 +2335,7 @@
                       "properties": {
                         "file_id": {
                           "type": "string",
-                          "description": "文件 ID，可用于知识库关联"
+                          "description": "File ID that can be used to associate the document with a knowledge base"
                         }
                       }
                     }
@@ -2352,10 +2352,10 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "获取已安装插件列表",
+        "summary": "List installed plugins",
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2389,7 +2389,7 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "获取插件详情",
+        "summary": "Get plugin details",
         "parameters": [
           {
             "name": "author",
@@ -2410,7 +2410,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2442,8 +2442,8 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "删除插件",
-        "description": "异步删除插件，返回任务 ID。",
+        "summary": "Delete a plugin",
+        "description": "Delete a plugin asynchronously and return the task ID.",
         "parameters": [
           {
             "name": "author",
@@ -2469,12 +2469,12 @@
               "type": "boolean",
               "default": false
             },
-            "description": "是否同时删除插件数据"
+            "description": "Whether to delete the plugin data as well"
           }
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2505,8 +2505,8 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "升级插件",
-        "description": "异步升级插件到最新版本，返回任务 ID。",
+        "summary": "Upgrade a plugin",
+        "description": "Upgrade a plugin to the latest version asynchronously and return the task ID.",
         "parameters": [
           {
             "name": "author",
@@ -2527,7 +2527,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2558,8 +2558,8 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "获取插件配置",
-        "description": "获取插件的当前配置值和配置模式。",
+        "summary": "Get plugin configuration",
+        "description": "Get the plugin's current configuration values and configuration schema.",
         "parameters": [
           {
             "name": "author",
@@ -2580,7 +2580,7 @@
         ],
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2604,7 +2604,7 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "更新插件配置",
+        "summary": "Update plugin configuration",
         "parameters": [
           {
             "name": "author",
@@ -2629,7 +2629,7 @@
             "application/json": {
               "schema": {
                 "type": "object",
-                "description": "插件配置键值对"
+                "description": "Plugin configuration key-value pairs"
               }
             }
           }
@@ -2646,8 +2646,8 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "从 Marketplace 安装插件",
-        "description": "从 LangBot Marketplace 安装插件。异步操作，返回任务 ID。",
+        "summary": "Install a plugin from Marketplace",
+        "description": "Install a plugin from LangBot Marketplace asynchronously and return the task ID.",
         "requestBody": {
           "required": true,
           "content": {
@@ -2660,7 +2660,7 @@
                 "properties": {
                   "plugin_id": {
                     "type": "string",
-                    "description": "Marketplace 插件 ID（author/name 格式）",
+                    "description": "Marketplace plugin ID (author/name format)",
                     "example": "kellz-dev/disaster-alert"
                   }
                 }
@@ -2670,7 +2670,7 @@
         },
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2701,8 +2701,8 @@
         "tags": [
           "Plugins"
         ],
-        "summary": "从 GitHub 安装插件",
-        "description": "从 GitHub 仓库安装插件。异步操作，返回任务 ID。",
+        "summary": "Install a plugin from GitHub",
+        "description": "Install a plugin from a GitHub repository asynchronously and return the task ID.",
         "requestBody": {
           "required": true,
           "content": {
@@ -2715,7 +2715,7 @@
                 "properties": {
                   "url": {
                     "type": "string",
-                    "description": "GitHub 仓库 URL",
+                    "description": "GitHub repository URL",
                     "example": "https://github.com/rocksclawbot/langbot-community-plugins/tree/main/disaster-alert"
                   }
                 }
@@ -2725,7 +2725,7 @@
         },
         "responses": {
           "200": {
-            "description": "成功",
+            "description": "Successful response",
             "content": {
               "application/json": {
                 "schema": {
@@ -2874,7 +2874,7 @@
     "schemas": {
       "ModelProvider": {
         "type": "object",
-        "description": "模型供应商。定义了 API 地址和密钥，模型通过 provider_uuid 关联。",
+        "description": "Model provider. Defines the API endpoint and keys; models are associated through provider_uuid.",
         "properties": {
           "uuid": {
             "type": "string",
@@ -2886,28 +2886,28 @@
           },
           "requester": {
             "type": "string",
-            "description": "请求器类型",
+            "description": "Requester type",
             "example": "openai-chat-completions"
           },
           "base_url": {
             "type": "string",
-            "description": "API 基础地址",
+            "description": "API base URL",
             "example": "https://api.openai.com/v1"
           },
           "api_keys": {
             "type": "array",
-            "description": "API 密钥列表",
+            "description": "List of API keys",
             "items": {
               "type": "string"
             }
           },
           "llm_count": {
             "type": "integer",
-            "description": "关联的 LLM 模型数量"
+            "description": "Number of associated LLM models"
           },
           "embedding_count": {
             "type": "integer",
-            "description": "关联的 Embedding 模型数量"
+            "description": "Number of associated embedding models"
           },
           "created_at": {
             "type": "string",
@@ -2933,7 +2933,7 @@
           },
           "requester": {
             "type": "string",
-            "description": "请求器类型。可通过 GET /api/v1/provider/requesters 获取可用列表。",
+            "description": "Requester type. Use GET /api/v1/provider/requesters to list available requesters.",
             "example": "openai-chat-completions"
           },
           "base_url": {
@@ -2973,7 +2973,7 @@
       },
       "LLMModel": {
         "type": "object",
-        "description": "大语言模型。通过 provider_uuid 关联到供应商，继承供应商的 API 地址和密钥。",
+        "description": "Large language model. Associated with a provider through provider_uuid and inherits the provider's API endpoint and keys.",
         "properties": {
           "uuid": {
             "type": "string",
@@ -2981,20 +2981,20 @@
           },
           "name": {
             "type": "string",
-            "description": "模型名称（即模型 ID，发送到 API 的 model 参数值）",
+            "description": "Model name (the model ID sent as the API model parameter)",
             "example": "gpt-4o"
           },
           "provider_uuid": {
             "type": "string",
             "format": "uuid",
-            "description": "关联的供应商 UUID"
+            "description": "Associated provider UUID"
           },
           "abilities": {
             "type": "array",
             "items": {
               "type": "string"
             },
-            "description": "模型能力标签",
+            "description": "Model capability tags",
             "example": [
               "chat",
               "vision",
@@ -3003,11 +3003,11 @@
           },
           "extra_args": {
             "type": "object",
-            "description": "额外参数（如 temperature、max_tokens 等）"
+            "description": "Additional parameters (such as temperature and max_tokens)"
           },
           "prefered_ranking": {
             "type": "integer",
-            "description": "优先级排序（越大越优先）",
+            "description": "Priority ranking (higher values take precedence)",
             "default": 0
           },
           "created_at": {
@@ -3029,13 +3029,13 @@
         "properties": {
           "name": {
             "type": "string",
-            "description": "模型名称（即模型 ID）",
+            "description": "Model name (model ID)",
             "example": "gpt-4o"
           },
           "provider_uuid": {
             "type": "string",
             "format": "uuid",
-            "description": "关联的供应商 UUID"
+            "description": "Associated provider UUID"
           },
           "abilities": {
             "type": "array",
@@ -3082,7 +3082,7 @@
       },
       "EmbeddingModel": {
         "type": "object",
-        "description": "向量模型。通过 provider_uuid 关联到供应商。",
+        "description": "Embedding model. Associated with a provider through provider_uuid.",
         "properties": {
           "uuid": {
             "type": "string",
@@ -3090,13 +3090,13 @@
           },
           "name": {
             "type": "string",
-            "description": "模型名称（即模型 ID）",
+            "description": "Model name (model ID)",
             "example": "text-embedding-3-small"
           },
           "provider_uuid": {
             "type": "string",
             "format": "uuid",
-            "description": "关联的供应商 UUID"
+            "description": "Associated provider UUID"
           },
           "extra_args": {
             "type": "object"
@@ -3326,7 +3326,7 @@
     },
     "responses": {
       "Success": {
-        "description": "操作成功",
+        "description": "Operation completed successfully",
         "content": {
           "application/json": {
             "schema": {
@@ -3342,7 +3342,7 @@
         }
       },
       "NotFound": {
-        "description": "资源未找到",
+        "description": "Resource not found",
         "content": {
           "application/json": {
             "schema": {
@@ -3353,4 +3353,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/package.json b/package.json
index 96928f6d1..bdbd358c2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,7 @@
 {
   "scripts": {
     "dev": "npx mintlify dev",
+    "generate:sitemap-alternates": "node scripts/generate-alternate-sitemap.mjs",
     "test": "node --test tests/*.test.mjs"
   },
   "dependencies": {
diff --git a/robots.txt b/robots.txt
new file mode 100644
index 000000000..b2f247c19
--- /dev/null
+++ b/robots.txt
@@ -0,0 +1,6 @@
+User-agent: *
+Allow: /
+Allow: /_next/
+
+Sitemap: https://docs.langbot.app/sitemap.xml
+Sitemap: https://docs.langbot.app/sitemap-alternates.xml
diff --git a/scripts/generate-alternate-sitemap.mjs b/scripts/generate-alternate-sitemap.mjs
new file mode 100644
index 000000000..e8d1760d7
--- /dev/null
+++ b/scripts/generate-alternate-sitemap.mjs
@@ -0,0 +1,75 @@
+#!/usr/bin/env node
+
+import { writeFile } from "node:fs/promises";
+
+const base = "https://docs.langbot.app";
+const source = process.env.SITEMAP_SOURCE ?? `${base}/sitemap.xml`;
+const output = new URL("../sitemap-alternates.xml", import.meta.url);
+const locales = ["en", "zh", "ja"];
+
+function escapeXml(value) {
+  return value
+    .replaceAll("&", "&amp;")
+    .replaceAll("<", "&lt;")
+    .replaceAll(">", "&gt;")
+    .replaceAll('"', "&quot;")
+    .replaceAll("'", "&apos;");
+}
+
+const response = await fetch(source, {
+  headers: { "user-agent": "LangBot docs alternate-sitemap generator" },
+});
+if (!response.ok) {
+  throw new Error(`Unable to fetch ${source}: ${response.status}`);
+}
+
+const sitemap = await response.text();
+const urls = [...sitemap.matchAll(/<loc>([^<]+)<\/loc>/g)].map((match) =>
+  match[1].replaceAll("&amp;", "&"),
+);
+const groups = new Map();
+
+for (const url of urls) {
+  for (const locale of locales) {
+    const prefix = `${base}/${locale}/`;
+    if (!url.startsWith(prefix)) continue;
+    const suffix = url.slice(prefix.length);
+    const group = groups.get(suffix) ?? {};
+    group[locale] = url;
+    groups.set(suffix, group);
+    break;
+  }
+}
+
+const translatedGroups = [...groups.values()]
+  .filter((group) => group.en && group.zh)
+  .sort((left, right) => left.en.localeCompare(right.en));
+const lines = [
+  '<?xml version="1.0" encoding="UTF-8"?>',
+  '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">',
+];
+
+for (const group of translatedGroups) {
+  const alternates = [
+    ["en", group.en],
+    ["zh-CN", group.zh],
+    ...(group.ja ? [["ja", group.ja]] : []),
+    ["x-default", group.zh],
+  ];
+  for (const locale of locales) {
+    if (!group[locale]) continue;
+    lines.push("  <url>", `    <loc>${escapeXml(group[locale])}</loc>`);
+    for (const [language, href] of alternates) {
+      lines.push(
+        `    <xhtml:link rel="alternate" hreflang="${language}" href="${escapeXml(href)}" />`,
+      );
+    }
+    lines.push("  </url>");
+  }
+}
+lines.push("</urlset>");
+
+await writeFile(output, `${lines.join("\n")}\n`);
+console.log(
+  `Wrote ${translatedGroups.length} reciprocal language groups to ${output.pathname}`,
+);
diff --git a/sitemap-alternates.xml b/sitemap-alternates.xml
new file mode 100644
index 000000000..0cb18acc7
--- /dev/null
+++ b/sitemap-alternates.xml
@@ -0,0 +1,1746 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/command</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/command" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/deploy/command</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/command" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/deploy/command</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/command" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/command" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/langbot/docker</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/docker" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/deploy/langbot/docker</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/docker" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/deploy/langbot/docker</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/docker" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/docker" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/langbot/kubernetes</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/kubernetes" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/deploy/langbot/kubernetes</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/kubernetes" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/deploy/langbot/kubernetes</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/kubernetes" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/kubernetes" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/langbot/manual</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/manual" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/deploy/langbot/manual</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/manual" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/deploy/langbot/manual</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/manual" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/manual" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/langbot/one-click/1panel</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/one-click/1panel" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/deploy/langbot/one-click/1panel</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/one-click/1panel" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/deploy/langbot/one-click/1panel</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/one-click/1panel" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/one-click/1panel" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/langbot/one-click/bt</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/one-click/bt" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/deploy/langbot/one-click/bt</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/one-click/bt" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/deploy/langbot/one-click/bt</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/one-click/bt" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/one-click/bt" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/langbot/package</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/package" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/deploy/langbot/package</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/package" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/deploy/langbot/package</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/deploy/langbot/package" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/deploy/langbot/package" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/deploy/settings</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/deploy/settings" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/deploy/settings" />
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+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/apis/messages" />
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+    <loc>https://docs.langbot.app/zh/plugin/dev/apis/messages</loc>
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+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/apis/messages" />
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+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/plugin/dev/apis/messages" />
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+  <url>
+    <loc>https://docs.langbot.app/ja/plugin/dev/apis/messages</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/apis/messages" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/apis/messages" />
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+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/plugin/dev/apis/messages" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/plugin/dev/apis/pipeline-events</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/apis/pipeline-events" />
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+  <url>
+    <loc>https://docs.langbot.app/zh/plugin/dev/apis/pipeline-events</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/apis/pipeline-events" />
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+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/plugin/dev/apis/pipeline-events" />
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+  <url>
+    <loc>https://docs.langbot.app/ja/plugin/dev/apis/pipeline-events</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/apis/pipeline-events" />
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+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/plugin/dev/apis/pipeline-events" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/plugin/dev/apis/tech-details</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/apis/tech-details" />
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+  <url>
+    <loc>https://docs.langbot.app/ja/plugin/dev/apis/tech-details</loc>
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+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/basic-info" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/basic-info" />
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+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/basic-info" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/basic-info" />
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+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/plugin/dev/basic-info" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/plugin/dev/components/add</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/components/add" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/components/add" />
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+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/components/add" />
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+    <loc>https://docs.langbot.app/ja/plugin/dev/components/add</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/plugin/dev/components/add" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/components/add" />
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+    <loc>https://docs.langbot.app/en/plugin/dev/components/command</loc>
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+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/components/command" />
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+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/components/command" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/plugin/dev/components/command" />
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+    <loc>https://docs.langbot.app/ja/plugin/dev/components/command</loc>
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+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/plugin/dev/components/command" />
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+  <url>
+    <loc>https://docs.langbot.app/en/plugin/dev/components/event-listener</loc>
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+  <url>
+    <loc>https://docs.langbot.app/en/plugin/dev/components/knowledge-engine</loc>
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+    <loc>https://docs.langbot.app/zh/plugin/dev/components/knowledge-engine</loc>
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+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/config" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/config" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/usage/sandbox/config</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/sandbox/config" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/sandbox/config" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/config" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/config" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/usage/sandbox/readme</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/readme" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/usage/sandbox/readme</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/readme" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/usage/sandbox/readme</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/readme" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/readme" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/usage/sandbox/runtime-relationships</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/runtime-relationships" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/usage/sandbox/runtime-relationships</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/runtime-relationships" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/usage/sandbox/runtime-relationships</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/sandbox/runtime-relationships" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/sandbox/runtime-relationships" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/usage/skills/readme</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/skills/readme" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/usage/skills/readme</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/skills/readme" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/usage/skills/readme</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/usage/skills/readme" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/usage/skills/readme" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/workshop/302ai-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/302ai-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/workshop/302ai-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/302ai-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/workshop/302ai-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/302ai-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/302ai-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/workshop/impl-platform-adapter</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/impl-platform-adapter" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/workshop/impl-platform-adapter</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/impl-platform-adapter" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/workshop/impl-platform-adapter</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/impl-platform-adapter" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/impl-platform-adapter" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/workshop/mcp-details</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/mcp-details" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/workshop/mcp-details</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/mcp-details" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/workshop/mcp-details</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/mcp-details" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/mcp-details" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/workshop/network-details</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/network-details" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/workshop/network-details</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/network-details" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/workshop/network-details</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/network-details" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/network-details" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/workshop/newapi-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/newapi-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/workshop/newapi-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/newapi-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/workshop/newapi-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/newapi-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/newapi-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/workshop/ppio-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/ppio-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/workshop/ppio-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/ppio-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/workshop/ppio-integration</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/ppio-integration" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/ppio-integration" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/en/workshop/production/proxy-and-ssl</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/production/proxy-and-ssl" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/zh/workshop/production/proxy-and-ssl</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/production/proxy-and-ssl" />
+  </url>
+  <url>
+    <loc>https://docs.langbot.app/ja/workshop/production/proxy-and-ssl</loc>
+    <xhtml:link rel="alternate" hreflang="en" href="https://docs.langbot.app/en/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://docs.langbot.app/zh/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="ja" href="https://docs.langbot.app/ja/workshop/production/proxy-and-ssl" />
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://docs.langbot.app/zh/workshop/production/proxy-and-ssl" />
+  </url>
+</urlset>
diff --git a/tests/seo.test.mjs b/tests/seo.test.mjs
index a9ebcedae..c7e5c729e 100644
--- a/tests/seo.test.mjs
+++ b/tests/seo.test.mjs
@@ -3,6 +3,7 @@ import { readFile } from "node:fs/promises";
 import test from "node:test";
 
 const repoRoot = new URL("../", import.meta.url);
+const cjk = /[\u3400-\u4DBF\u4E00-\u9FFF\u3040-\u30FF\uAC00-\uD7AF]/u;
 
 test("repository-only English README is excluded from Mintlify publishing", async () => {
   const mintignore = await readFile(new URL(".mintignore", repoRoot), "utf8");
@@ -30,3 +31,90 @@ test("the historical README_EN URL keeps its permanent canonical redirect", asyn
   assert.equal(redirects[0].destination, "/en/insight/guide");
   assert.notEqual(redirects[0].permanent, false);
 });
+
+test("custom robots policy is served from the Mintlify project root", async () => {
+  const robots = await readFile(new URL("robots.txt", repoRoot), "utf8");
+  assert.match(robots, /^User-agent: \*$/m);
+  assert.match(robots, /^Allow: \/_next\/$/m);
+  assert.match(
+    robots,
+    /^Sitemap: https:\/\/docs\.langbot\.app\/sitemap\.xml$/m,
+  );
+  assert.match(
+    robots,
+    /^Sitemap: https:\/\/docs\.langbot\.app\/sitemap-alternates\.xml$/m,
+  );
+});
+
+test("alternate sitemap declares reciprocal en, zh-CN, ja and x-default links", async () => {
+  const sitemap = await readFile(
+    new URL("sitemap-alternates.xml", repoRoot),
+    "utf8",
+  );
+  const blocks = [...sitemap.matchAll(/<url>([\s\S]*?)<\/url>/g)].map(
+    (match) => match[1],
+  );
+  assert.ok(blocks.length > 0);
+
+  const groups = new Map();
+  for (const block of blocks) {
+    const loc = block.match(/<loc>([^<]+)<\/loc>/)?.[1];
+    assert.ok(loc);
+    const links = Object.fromEntries(
+      [...block.matchAll(/hreflang="([^"]+)" href="([^"]+)"/g)].map(
+        (match) => [match[1], match[2]],
+      ),
+    );
+    assert.ok(links.en);
+    assert.ok(links["zh-CN"]);
+    assert.equal(links["x-default"], links["zh-CN"]);
+    const reciprocalUrls = [links.en, links["zh-CN"], links.ja].filter(Boolean);
+    const key = reciprocalUrls.join("\n");
+    groups.set(key, [...(groups.get(key) ?? []), loc]);
+  }
+
+  assert.ok(groups.size > 0);
+  for (const [key, locations] of groups) {
+    assert.deepEqual(locations.sort(), key.split("\n").sort());
+  }
+});
+
+test("English Service API specification contains no CJK copy", async () => {
+  const source = await readFile(
+    new URL("openapi/service-api-en.json", repoRoot),
+    "utf8",
+  );
+  assert.doesNotThrow(() => JSON.parse(source));
+  const matches = [...source.matchAll(new RegExp(cjk.source, "gu"))];
+  assert.equal(matches.length, 0, `found ${matches.length} CJK code points`);
+});
+
+test("translated English API routes preserve every historical Chinese URL", async () => {
+  const docs = JSON.parse(await readFile(new URL("docs.json", repoRoot), "utf8"));
+  const redirects = docs.redirects.filter((item) =>
+    item.source.startsWith("/en/api-reference/") && cjk.test(item.source),
+  );
+  cjk.lastIndex = 0;
+
+  assert.equal(redirects.length, 57);
+  assert.equal(new Set(redirects.map((item) => item.source)).size, 57);
+  for (const redirect of redirects) {
+    assert.equal(redirect.permanent, true);
+    assert.match(redirect.destination, /^\/en\/api-reference\//);
+    assert.doesNotMatch(redirect.destination, cjk);
+    cjk.lastIndex = 0;
+  }
+});
+
+test("every Markdown image in the English guide has descriptive alt text", async () => {
+  const guide = await readFile(
+    new URL("en/insight/guide.mdx", repoRoot),
+    "utf8",
+  );
+  const images = [...guide.matchAll(/!\[([^\]]*)\]\(([^)]+)\)/g)];
+  assert.ok(images.length > 0, "expected at least one Markdown image");
+
+  for (const [, alt, src] of images) {
+    assert.ok(alt.trim().length >= 8, `${src} is missing descriptive alt text`);
+  }
+});