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fix(multi-agent): degrade to builtins-only when MCP or subagent registry build fails

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CREDO23 2026-05-05 23:42:11 +02:00
parent 3cb2c3056e
commit a421e7d792
2 changed files with 16 additions and 3 deletions
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11
surfsense_backend/app/agents/multi_agent_chat/main_agent/runtime/factory.py
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@ -129,7 +129,16 @@ async def create_multi_agent_chat_deep_agent(
} }
_t0 = time.perf_counter() _t0 = time.perf_counter()
mcp_tools_by_agent = await load_mcp_tools_by_connector(db_session, search_space_id) try:
mcp_tools_by_agent = await load_mcp_tools_by_connector(db_session, search_space_id)
except Exception as e:
# Degrade to builtins-only rather than aborting the turn: a transient
# DB or MCP-server hiccup should not deny the user a response.
logging.warning(
"MCP tool discovery failed; subagents will run without MCP tools this turn: %s",
e,
)
mcp_tools_by_agent = {}
_perf_log.info( _perf_log.info(
"[create_agent] load_mcp_tools_by_connector in %.3fs (%d buckets)", "[create_agent] load_mcp_tools_by_connector in %.3fs (%d buckets)",
time.perf_counter() - _t0, time.perf_counter() - _t0,

8
surfsense_backend/app/agents/multi_agent_chat/middleware/stack.py
View file

@ -126,8 +126,12 @@ def build_main_agent_deepagent_middleware(
[s["name"] for s in subagents_registry], [s["name"] for s in subagents_registry],
) )
except Exception: except Exception:
logging.exception("Subagents registry build failed") # Degrade to general-purpose-only rather than aborting the turn:
raise # one bad subagent dep should not deny the user a response.
logging.exception(
"Subagents registry build failed; falling back to general-purpose only"
)
subagents_registry = []
subagents: list[SubAgent] = [general_purpose_subagent, *subagents_registry] subagents: list[SubAgent] = [general_purpose_subagent, *subagents_registry]