nanobot/agent/subagent.py

@@ -16,6 +16,7 @@ from nanobot.agent.tools.filesystem import ReadFileTool, WriteFileTool, EditFile
 from nanobot.agent.tools.shell import ExecTool
 from nanobot.agent.tools.web import WebSearchTool, WebFetchTool
 from nanobot.agent.tools.spawn import SpawnTool
+from nanobot.agent.tools.wait import WaitForSubagentsTool
 
 
 class SubagentManager:
@@ -45,6 +46,7 @@ class SubagentManager:
         self.restrict_to_workspace = restrict_to_workspace
         self._running_tasks: dict[str, asyncio.Task[None]] = {}
         self._session_tasks: dict[str, set[str]] = {}  # session_key -> {task_id, ...}
+        self._task_results: dict[str, str] = {}
     
     async def spawn(
         self,
@@ -76,8 +78,8 @@ class SubagentManager:
 
         bg_task.add_done_callback(_cleanup)
 
-        logger.info("Spawned subagent [{}]: {}", task_id, display_label)
-        return f"Subagent [{display_label}] started (id: {task_id}). I'll notify you when it completes."
+        logger.info(f"Spawned subagent [{task_id}]: {display_label}")
+        return f"Subagent [{display_label}] started. Task ID: {task_id}"
     
     async def _run_subagent(
         self,
@@ -107,8 +109,9 @@ class SubagentManager:
             tools.register(WebSearchTool(api_key=self.brave_api_key))
             tools.register(WebFetchTool())
             spawn_tool = SpawnTool(manager=self)
-            spawn_tool.set_context(origin["channel"], origin["chat_id"])
+            spawn_tool.set_context("subagent", origin["chat_id"])
             tools.register(spawn_tool)
+            tools.register(WaitForSubagentsTool(manager=self))
 
             # Build messages with subagent-specific prompt
             system_prompt = self._build_subagent_prompt(task)
@@ -190,6 +193,13 @@ class SubagentManager:
         """Announce the subagent result to the main agent via the message bus."""
         status_text = "completed successfully" if status == "ok" else "failed"
 
+        # Child subagents (spawned by other subagents) store results silently.
+        # The parent orchestrator collects them via wait_for_subagents.
+        if origin["channel"] == "subagent":
+            self._task_results[task_id] = result
+            logger.debug(f"Subagent [{task_id}] stored result silently (child subagent)")
+            return
+
         announce_content = f"""[Subagent '{label}' {status_text}]
 
 Task: {task}
@@ -246,6 +256,7 @@ Skills are available at: {self.workspace}/skills/ (read SKILL.md files as needed
 
 When you have completed the task, provide a clear summary of your findings or actions."""
     
+<<<<<<< HEAD
     async def cancel_by_session(self, session_key: str) -> int:
         """Cancel all subagents for the given session. Returns count cancelled."""
         tasks = [self._running_tasks[tid] for tid in self._session_tasks.get(session_key, [])
@@ -255,6 +266,26 @@ When you have completed the task, provide a clear summary of your findings or ac
         if tasks:
             await asyncio.gather(*tasks, return_exceptions=True)
         return len(tasks)
+=======
+    async def wait_for(self, task_ids: list[str]) -> str:
+        """Wait for specified child subagents to complete and return their results."""
+        tasks_to_wait = [
+            self._running_tasks[tid]
+            for tid in task_ids
+            if tid in self._running_tasks
+        ]
+        if tasks_to_wait:
+            await asyncio.gather(*tasks_to_wait, return_exceptions=True)
+
+        results = []
+        for tid in task_ids:
+            result = self._task_results.get(tid)
+            if result is not None:
+                results.append(f"[{tid}]:\n{result}")
+            else:
+                results.append(f"[{tid}]: No result found (invalid ID or task failed before storing)")
+        return "\n\n---\n\n".join(results)
+>>>>>>> c606ab9 (Add wait_for_subagents tool and silence child subagent announcements)
 
     def get_running_count(self) -> int:
         """Return the number of currently running subagents."""

nanobot/agent/tools/wait.py

@@ -0,0 +1,50 @@
+"""Wait-for-subagents tool for orchestrator subagents."""
+
+from typing import Any, TYPE_CHECKING
+
+from nanobot.agent.tools.base import Tool
+
+if TYPE_CHECKING:
+    from nanobot.agent.subagent import SubagentManager
+
+
+class WaitForSubagentsTool(Tool):
+    """
+    Tool to wait for child subagents to complete and collect their results.
+
+    Use this after spawning multiple subagents to wait for all of them
+    and get their results for synthesis.
+    """
+
+    def __init__(self, manager: "SubagentManager"):
+        self._manager = manager
+
+    @property
+    def name(self) -> str:
+        return "wait_for_subagents"
+
+    @property
+    def description(self) -> str:
+        return (
+            "Wait for one or more child subagents to complete and return their results. "
+            "Use this after spawning subagents to collect all results before synthesizing. "
+            "Blocks until all specified subagents finish."
+        )
+
+    @property
+    def parameters(self) -> dict[str, Any]:
+        return {
+            "type": "object",
+            "properties": {
+                "task_ids": {
+                    "type": "array",
+                    "items": {"type": "string"},
+                    "description": "List of task IDs to wait for (from spawn tool responses)",
+                },
+            },
+            "required": ["task_ids"],
+        }
+
+    async def execute(self, task_ids: list[str], **kwargs: Any) -> str:
+        """Wait for the specified subagents and return their results."""
+        return await self._manager.wait_for(task_ids)