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feat: make max concurrent subagents configurable via runtime config

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Support configuring max_concurrent_subagents (2-4, default 3) through
config.configurable, with automatic clamping and dynamic prompt generation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
hetao
2026-02-11 11:41:30 +08:00
parent 4a85c5de7b
commit 770d92fe36
5 changed files with 75 additions and 52 deletions
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8
backend/src/agents/lead_agent/agent.py
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@@ -227,7 +227,8 @@ def _build_middlewares(config: RunnableConfig):
# Add SubagentLimitMiddleware to truncate excess parallel task calls
subagent_enabled = config.get("configurable", {}).get("subagent_enabled", False)
if subagent_enabled:
middlewares.append(SubagentLimitMiddleware())
max_concurrent_subagents = config.get("configurable", {}).get("max_concurrent_subagents", 3)
middlewares.append(SubagentLimitMiddleware(max_concurrent=max_concurrent_subagents))
# ClarificationMiddleware should always be last
middlewares.append(ClarificationMiddleware())
@@ -246,11 +247,12 @@ def make_lead_agent(config: RunnableConfig):
model_name = config.get("configurable", {}).get("model_name") or config.get("configurable", {}).get("model")
is_plan_mode = config.get("configurable", {}).get("is_plan_mode", False)
subagent_enabled = config.get("configurable", {}).get("subagent_enabled", False)
print(f"thinking_enabled: {thinking_enabled}, model_name: {model_name}, is_plan_mode: {is_plan_mode}, subagent_enabled: {subagent_enabled}")
max_concurrent_subagents = config.get("configurable", {}).get("max_concurrent_subagents", 3)
print(f"thinking_enabled: {thinking_enabled}, model_name: {model_name}, is_plan_mode: {is_plan_mode}, subagent_enabled: {subagent_enabled}, max_concurrent_subagents: {max_concurrent_subagents}")
return create_agent(
model=create_chat_model(name=model_name, thinking_enabled=thinking_enabled),
tools=get_available_tools(model_name=model_name, subagent_enabled=subagent_enabled),
middleware=_build_middlewares(config),
system_prompt=apply_prompt_template(subagent_enabled=subagent_enabled),
system_prompt=apply_prompt_template(subagent_enabled=subagent_enabled, max_concurrent_subagents=max_concurrent_subagents),
state_schema=ThreadState,
)