diff --git a/agent/agent_config.py b/agent/agent_config.py
index 6a84cb0..e1b752e 100644
--- a/agent/agent_config.py
+++ b/agent/agent_config.py
@@ -312,10 +312,13 @@ class AgentConfig:
         # 使 workspace / system_prompt 路径 / skills 目录都落到 projects/robot/{bot_id}-{user}
         effective_bot_id = bot_config.get("project_dir_key") or request.bot_id
 
+        # 前端可通过请求体覆盖 model_id（仅本次请求生效）
+        effective_model_name = request.model_id or bot_config.get("model", "qwen/qwen3-next-80b-a3b-instruct")
+
         config = cls(
             bot_id=effective_bot_id,
             api_key=bot_config.get("api_key", ""),
-            model_name=bot_config.get("model", "qwen/qwen3-next-80b-a3b-instruct"),
+            model_name=effective_model_name,
             model_server=bot_config.get("model_server", ""),
             language=language,
             system_prompt=system_prompt,
diff --git a/routes/bot_manager.py b/routes/bot_manager.py
index 61f1e03..0dc1a58 100644
--- a/routes/bot_manager.py
+++ b/routes/bot_manager.py
@@ -1603,6 +1603,56 @@ async def delete_bot(bot_uuid: str, authorization: Optional[str] = Header(None))
 
 # ============== Bot 设置 API ==============
 
+async def _fetch_user_models_and_datasets(user_id: str):
+    """获取当前用户可切换的 New API 模型列表与已建知识库 dataset_id 列表。
+
+    子账号自动取主账号的资源。返回 (models_list, dataset_ids)，
+    任何异常都不影响主流程（返回空列表）。
+    """
+    models_list: List[NewAPIModelResponse] = []
+    dataset_ids: List[str] = []
+
+    if user_id == "__masterkey__":
+        return models_list, dataset_ids
+
+    pool = get_db_pool_manager().pool
+    try:
+        async with pool.connection() as conn:
+            async with conn.cursor() as cursor:
+                effective_user_id = await get_parent_user_id(user_id)
+                await cursor.execute(
+                    "SELECT new_api_session, new_api_user_id FROM agent_user WHERE id = %s",
+                    (effective_user_id,)
+                )
+                row = await cursor.fetchone()
+                if row and row[0] and row[1]:
+                    proxy = get_new_api_proxy()
+                    cookies = {"session": row[0]}
+                    result = await proxy.get_user_models(cookies, row[1])
+                    if result.get("success"):
+                        data = result.get("data", [])
+                        if isinstance(data, list):
+                            for model in data:
+                                models_list.append(NewAPIModelResponse(
+                                    id=model if isinstance(model, str) else model.get("id", ""),
+                                    object="model",
+                                    created=None,
+                                    owned_by="system"
+                                ))
+
+                # 用户已创建的知识库（子账号使用主账号的）
+                await cursor.execute(
+                    "SELECT dataset_id FROM user_datasets WHERE user_id = %s ORDER BY created_at DESC",
+                    (effective_user_id,)
+                )
+                rows = await cursor.fetchall()
+                dataset_ids = [r[0] for r in rows] if rows else []
+    except Exception as e:
+        print(f"Failed to fetch user models/datasets: {e}")
+
+    return models_list, dataset_ids
+
+
 @router.get("/api/v1/general-agent/settings", response_model=BotSettingsResponse)
 async def get_general_agent_settings_api(authorization: Optional[str] = Header(None)):
     """获取通用智能体设置（配置文件驱动，对所有登录用户只读）"""
@@ -1613,6 +1663,16 @@ async def get_general_agent_settings_api(authorization: Optional[str] = Header(N
     settings = get_general_agent_settings()
 
     model_id = settings.get("model_id", "")
+
+    # 拉取当前用户可切换的模型与已建知识库，供前端在首页选择
+    models_list, user_dataset_ids = await _fetch_user_models_and_datasets(user_id)
+
+    # 如果配置中的 model_id 不在用户可用列表里，回退到第一个可用模型（仅展示层）
+    if model_id and models_list and model_id not in [m.id for m in models_list]:
+        model_id = models_list[0].id
+    if not model_id and models_list:
+        model_id = models_list[0].id
+
     model_info = None
     if model_id:
         model_info = ModelInfo(
@@ -1629,12 +1689,12 @@ async def get_general_agent_settings_api(authorization: Optional[str] = Header(N
         name=settings.get("name", "通用智能体"),
         model_id=model_id or None,
         model=model_info,
-        models=[],
+        models=models_list,
         language=settings.get("language", "zh"),
         avatar_url=settings.get("avatar_url") or None,
         description=settings.get("description") or None,
         suggestions=settings.get("suggestions") or [],
-        dataset_ids=settings.get("dataset_ids") or [],
+        dataset_ids=user_dataset_ids,
         system_prompt=settings.get("system_prompt") or None,
         enable_memori=settings.get("enable_memori", False),
         enable_thinking=settings.get("enable_thinking", False),
diff --git a/routes/chat.py b/routes/chat.py
index 965d88d..c00bce6 100644
--- a/routes/chat.py
+++ b/routes/chat.py
@@ -938,6 +938,11 @@ async def chat_completions_v3(request: ChatRequestV3, authorization: Optional[st
         # 从数据库获取机器人配置
         bot_config = await fetch_bot_config_from_db(bot_id, request.user_identifier)
 
+        # 允许前端通过请求体覆盖 model_id / dataset_ids（仅本次请求生效，不写库；
+        # 用于只读配置的 bot，如 general-agent 静态 json 配置）。
+        if request.dataset_ids is not None:
+            bot_config["dataset_ids"] = request.dataset_ids
+
         # 构造类 v2 的请求格式
         # 从数据库配置中提取参数
         language = bot_config.get("language", "zh")
diff --git a/utils/api_models.py b/utils/api_models.py
index 467c34e..b5bbb1a 100644
--- a/utils/api_models.py
+++ b/utils/api_models.py
@@ -85,12 +85,18 @@ class ChatRequestV3(BaseModel):
     - messages: 对话消息列表
     - session_id: 可选的会话ID
     - user_identifier: 当前登录用户的用户名，用于标识用户身份
+
+    可选覆盖项（仅本次请求生效，不写库；用于只读配置的 bot，如 general-agent）：
+    - model_id: 模型 ID，覆盖数据库配置
+    - dataset_ids: 数据集 ID 列表，覆盖数据库配置
     """
     messages: List[Message]
     bot_id: str
     stream: Optional[bool] = False
     session_id: Optional[str] = None
     user_identifier: Optional[str] = None
+    model_id: Optional[str] = None
+    dataset_ids: Optional[List[str]] = None
 
 
 class VisionMessage(BaseModel):