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fix: search tools not found when using per-request routers #19818

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Merged
yuneng-jiang merged 1 commit into from
Jan 31, 2026
Merged

fix: search tools not found when using per-request routers #19818

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7 changes: 6 additions & 1 deletion litellm/proxy/common_request_processing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -547,9 +547,14 @@ async def common_processing_pre_call_logic(
# Get model_list from current router
model_list = llm_router.get_model_list()
if model_list is not None:
# Create user_config with model_list and router_settings
# Create user_config with model_list, search_tools, and router_settings
# This creates a per-request router with the hierarchical settings
user_config = {"model_list": model_list, **router_settings}

# Include search_tools from main router so per-request router has them
if hasattr(llm_router, "search_tools") and llm_router.search_tools:
user_config["search_tools"] = llm_router.search_tools

self.data["user_config"] = user_config

if "messages" in self.data and self.data["messages"]:
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23 changes: 12 additions & 11 deletions litellm/proxy/proxy_server.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3173,17 +3173,18 @@ async def _update_llm_router(
_model_list: list = self.decrypt_model_list_from_db(
new_models=models_list
)
if len(_model_list) > 0:
verbose_proxy_logger.debug(f"_model_list: {_model_list}")
llm_router = litellm.Router(
model_list=_model_list,
router_general_settings=RouterGeneralSettings(
async_only_mode=True # only init async clients
),
search_tools=search_tools,
ignore_invalid_deployments=True,
)
verbose_proxy_logger.debug(f"updated llm_router: {llm_router}")
# Create router even with empty model list to support search_tools
# Router can function with model_list=[] and only search_tools
verbose_proxy_logger.debug(f"_model_list: {_model_list}")
llm_router = litellm.Router(
model_list=_model_list,
router_general_settings=RouterGeneralSettings(
async_only_mode=True # only init async clients
),
search_tools=search_tools,
ignore_invalid_deployments=True,
)
verbose_proxy_logger.debug(f"updated llm_router: {llm_router}")
else:
verbose_proxy_logger.debug(f"len new_models: {len(models_list)}")
## DELETE MODEL LOGIC
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