From 690d80f46f09c615fc9500b959cec8f9181360f9 Mon Sep 17 00:00:00 2001
From: SHIYAO ZHANG <834247613@qq.com>
Date: Sat, 28 Mar 2026 16:44:15 +0800
Subject: [PATCH] =?UTF-8?q?fix(task=5Ftool):=20fallback=20to=20configurabl?=
 =?UTF-8?q?e=20thread=5Fid=20when=20context=20is=20mi=E2=80=A6=20(#1343)?=
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* fix(task_tool): fallback to configurable thread_id when context is missing

task_tool only read thread_id from runtime.context, but when invoked
via LangGraph Server, thread_id lives in config.configurable instead.
Add the same fallback that ThreadDataMiddleware uses (PR #1237).

Fixes subagent execution failure: 'Thread ID is required in runtime
context or config.configurable'

* remove debug logging from task_tool
---
 backend/packages/harness/deerflow/tools/builtins/task_tool.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/backend/packages/harness/deerflow/tools/builtins/task_tool.py b/backend/packages/harness/deerflow/tools/builtins/task_tool.py
index 9f3f13b..55a41e3 100644
--- a/backend/packages/harness/deerflow/tools/builtins/task_tool.py
+++ b/backend/packages/harness/deerflow/tools/builtins/task_tool.py
@@ -86,6 +86,8 @@ async def task_tool(
         sandbox_state = runtime.state.get("sandbox")
         thread_data = runtime.state.get("thread_data")
         thread_id = runtime.context.get("thread_id") if runtime.context else None
+        if thread_id is None:
+            thread_id = runtime.config.get("configurable", {}).get("thread_id")
 
         # Try to get parent model from configurable
         metadata = runtime.config.get("metadata", {})