diff --git a/pipeline_service/agent_loop_v2.py b/pipeline_service/agent_loop_v2.py
index 76405a8..1a04f26 100644
--- a/pipeline_service/agent_loop_v2.py
+++ b/pipeline_service/agent_loop_v2.py
@@ -62,6 +62,7 @@ class AgentExecutor:
         workspace_dir: str = "",
         model_name: str = None,
         role: str = "",               # 产线内角色（可选，如 develop/design；驾驶舱 agent 为空）
+        base_url: str = "",            # 请求 base_url（scheme://host/），供 slash 命令生成 widget 绝对 URL
     ):
         self.config = config
         self.project_id = project_id
@@ -71,6 +72,7 @@ class AgentExecutor:
         self.role = role               # 产线内角色（技能/工具/prompt 按角色加载）
         self.workspace_dir = workspace_dir or WORKSPACE_BASE
         self.model_name = model_name or config.model_name
+        self.base_url = base_url
 
         # 运行状态
         self._msgs: List[dict] = []           # LLM 消息数组
@@ -653,10 +655,11 @@ class AgentExecutor:
         }
 
     def _build_slash_ctx(self) -> dict:
-        """构造传给 slash 命令 handler 的上下文（含 executor 引用 + role）。"""
+        """构造传给 slash 命令 handler 的上下文（含 executor 引用 + role + base_url）。"""
         ctx = self._build_ctx()
         ctx["executor"] = self
         ctx["role"] = self.role
+        ctx["base_url"] = getattr(self, "base_url", "") or ""
         return ctx
 
     async def _execute_ability_tool(self, tool_name: str, params: dict) -> Optional[str]:
diff --git a/pipeline_service/gateway.py b/pipeline_service/gateway.py
index 491fbcb..056dad5 100644
--- a/pipeline_service/gateway.py
+++ b/pipeline_service/gateway.py
@@ -109,7 +109,8 @@ class Gateway:
     # ── 统一消息入口 ──
 
     async def run_message(self, channel: str, user_id: str, content: str,
-                          history=None, role: str = "", generic: bool = False) -> AsyncGenerator[str, None]:
+                          history=None, role: str = "", generic: bool = False,
+                          base_url: str = "") -> AsyncGenerator[str, None]:
         """统一消息入口：解析上下文 → 加载产线能力 → AgentExecutor 执行 → yield 事件流。
 
         Args:
@@ -153,7 +154,8 @@ class Gateway:
         if ctx.get("default_llm_name"):
             config.model_name = ctx["default_llm_name"]
         executor = AgentExecutor(
-            config=config, project_id=ctx["pid"], user_id=user_id, role=role)
+            config=config, project_id=ctx["pid"], user_id=user_id, role=role,
+            base_url=base_url)
 
         # 4. 转发标准化事件流
         async for chunk in executor.run(content, history=history):
diff --git a/pipeline_service/sdlc_ability.py b/pipeline_service/sdlc_ability.py
index 86bf83f..a3c3d67 100644
--- a/pipeline_service/sdlc_ability.py
+++ b/pipeline_service/sdlc_ability.py
@@ -1477,6 +1477,9 @@ async def _slash_tasks(args, ctx):
 
 async def _slash_task(args, ctx):
     """任务树 + 输入输出（ResourceBrowser 弹窗）。返回 widget dict，前端 AgentOut 检测 widgettype 渲染。"""
+    base = (ctx.get("base_url") or "").rstrip("/")
+    tree_url = f"{base}/pipeline-sdlc/api/task_tree.dspy"
+    io_url = f"{base}/pipeline-sdlc/api/task_io.dspy"
     return {
         "widgettype": "PopupWindow",
         "options": {
@@ -1492,7 +1495,7 @@ async def _slash_task(args, ctx):
                 "tree_options": {
                     "widgettype": "Tree",
                     "options": {
-                        "dataurl": "/pipeline-sdlc/api/task_tree.dspy",
+                        "dataurl": tree_url,
                         "textField": "label",
                         "idField": "id",
                         "cfontsize": 1.0,
@@ -1500,7 +1503,7 @@ async def _slash_task(args, ctx):
                 },
                 "browser_options": {
                     "widgettype": "urlwidget",
-                    "options": {"url": "/pipeline-sdlc/api/task_io.dspy"},
+                    "options": {"url": io_url},
                 },
                 "tree_width": "300px",
             },