refactor: clear fresh tech debt from the last 24 hours (2026-09-19)

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

litellm/integrations/websearch_interception/handler.py

@@ -1762,7 +1762,7 @@ class WebSearchInterceptionLogger(CustomLogger):
         for tool_call in tool_calls:
             # Handle both Anthropic-style input and OpenAI-style function.arguments
             query = None
-            tool_args: dict | None = None  # mutable-ok: the tool call's own arguments dict
+            tool_args: dict[str, object] | None = None  # mutable-ok: the tool call's own arguments dict
             if "input" in tool_call and isinstance(tool_call["input"], dict):
                 tool_args = tool_call["input"]
                 query = tool_args.get("query")

litellm/llms/a2a/chat/transformation.py

@@ -49,7 +49,7 @@ def _registry_api_key(agent_litellm_params: Mapping[str, object]) -> str | None:
     return configured_api_key if isinstance(configured_api_key, str) else None
 
 
-def _registry_headers(agent_litellm_params: Mapping[str, object]) -> dict[str, Any] | None:
+def _registry_headers(agent_litellm_params: Mapping[str, object]) -> dict[str, object] | None:
     stored_headers: Final = agent_litellm_params.get("headers")
     if not isinstance(stored_headers, Mapping):
         return None

litellm/llms/openai/responses/guardrail_translation/handler.py

@@ -989,7 +989,7 @@ class OpenAIResponsesHandler(BaseTranslation):
 
     def _spread_text_rewrite_over_stream_events(
         self,
-        stream_events: Sequence[Any],
+        stream_events: Sequence[object],
         rewritten_text: str,
         guardrail_name: str,
     ) -> None:

litellm/main.py

@@ -1161,7 +1161,7 @@ def _is_claude_tool_target(custom_llm_provider: str | None, model: str) -> bool:
     return False
 
 
-def _without_anthropic_only_tool_keys(tool: dict) -> dict:
+def _without_anthropic_only_tool_keys(tool: dict[str, object]) -> dict[str, object]:
     kept: Final = {key: value for key, value in tool.items() if key not in _ANTHROPIC_ONLY_TOOL_KEYS}
     function: Final = tool.get("function")
     if not isinstance(function, dict):
@@ -1172,7 +1172,7 @@ def _without_anthropic_only_tool_keys(tool: dict) -> dict:
     }
 
 
-def _drop_anthropic_only_tool_keys(tools: list[dict] | None) -> list[dict] | None:
+def _drop_anthropic_only_tool_keys(tools: list[dict[str, object]] | None) -> list[dict[str, object]] | None:
     if tools is None:
         return None
     return [_without_anthropic_only_tool_keys(tool) if isinstance(tool, dict) else tool for tool in tools]

litellm/proxy/_experimental/mcp_server/discoverable_endpoints.py

@@ -2613,7 +2613,7 @@ def oauth_protected_resource_root(request: Request) -> dict[str, str | tuple[str
     }
 
 
-def _build_aggregate_protected_resource_response(request: Request) -> dict:
+def _build_aggregate_protected_resource_response(request: Request) -> dict[str, object]:
     """RFC 9728 metadata for the aggregate /mcp resource: the gateway itself is
     the authorization server. No per-server names or scopes leak here; access
     is resolved after sign-in from the authenticated user's grants.
@@ -2633,7 +2633,9 @@ def _build_aggregate_protected_resource_response(request: Request) -> dict:
     }
 
 
-def _build_aggregate_authorization_server_response(request: Request, token_exchange_available: bool) -> dict:
+def _build_aggregate_authorization_server_response(
+    request: Request, token_exchange_available: bool
+) -> dict[str, object]:
     """RFC 8414 metadata for the gateway as the aggregate authorization server.
 
     The issuer is ``{base}/mcp`` and must stay equal to the value the

litellm/proxy/spend_tracking/daily_global_spend_rollup.py

@@ -198,10 +198,6 @@ async def _scan_pending(prisma_client: "PrismaClient") -> _PendingScan:
     return _PendingScan(marker, db_now.now, tuple(_DateRow.model_validate(row).date for row in rows))
 
 
-async def pending_days(prisma_client: "PrismaClient") -> tuple[str, ...]:
-    return (await _scan_pending(prisma_client)).days
-
-
 async def reconcile_day(prisma_client: "PrismaClient", day: str) -> None:
     """Rewrite one day of the global table from the per-key sums. Idempotent: a rerun
     overwrites every group with the same totals."""

litellm/types/utils.py

@@ -3745,7 +3745,7 @@ def without_server_derived_pricing(model_info: Mapping[str, Any]) -> Mapping[str
     )
 
 
-def echoed_cost_map_pricing_fields(model_info: Mapping[str, Any]) -> tuple[str, ...]:
+def echoed_cost_map_pricing_fields(model_info: Mapping[str, object]) -> tuple[str, ...]:
     """Pricing fields a stored ``model_info`` blob copied from a ``/model/info`` response.
 
     Only ``litellm.get_model_info`` emits ``key`` (the resolved cost-map entry), so a stored
@@ -3758,7 +3758,7 @@ def echoed_cost_map_pricing_fields(model_info: Mapping[str, Any]) -> tuple[str,
     return tuple(sorted(k for k in model_info if is_server_derived_pricing_key(k)))
 
 
-def pricing_override_fields(*sources: Mapping[str, Any]) -> tuple[str, ...]:
+def pricing_override_fields(*sources: Mapping[str, object]) -> tuple[str, ...]:
     return tuple(
         sorted(
             frozenset(