diff --git a/api/core/tools/entities/tool_bundle.py b/api/core/tools/entities/tool_bundle.py
index 10710c4376..4e07b7157a 100644
--- a/api/core/tools/entities/tool_bundle.py
+++ b/api/core/tools/entities/tool_bundle.py
@@ -1,4 +1,5 @@
 from collections.abc import Mapping
+from typing import Any
 
 from pydantic import BaseModel, Field
 
@@ -26,6 +27,6 @@ class ApiToolBundle(BaseModel):
     # icon
     icon: str | None = None
     # openapi operation
-    openapi: dict
+    openapi: dict[str, Any]
     # output schema
     output_schema: Mapping[str, object] = Field(default_factory=dict)
diff --git a/api/core/tools/tool_engine.py b/api/core/tools/tool_engine.py
index 1afaa9cfaf..d060fa8b49 100644
--- a/api/core/tools/tool_engine.py
+++ b/api/core/tools/tool_engine.py
@@ -47,7 +47,7 @@ class ToolEngine:
     @staticmethod
     def agent_invoke(
         tool: Tool,
-        tool_parameters: Union[str, dict],
+        tool_parameters: Union[str, dict[str, Any]],
         user_id: str,
         tenant_id: str,
         message: Message,
@@ -85,7 +85,7 @@ class ToolEngine:
             invocation_meta_dict: dict[str, ToolInvokeMeta] = {}
 
             def message_callback(
-                invocation_meta_dict: dict[str, Any],
+                invocation_meta_dict: dict[str, ToolInvokeMeta],
                 messages: Generator[ToolInvokeMessage | ToolInvokeMeta, None, None],
             ):
                 for message in messages:
diff --git a/api/core/tools/utils/dataset_retriever/dataset_retriever_tool.py b/api/core/tools/utils/dataset_retriever/dataset_retriever_tool.py
index 6a189fa6aa..0d1dc7273b 100644
--- a/api/core/tools/utils/dataset_retriever/dataset_retriever_tool.py
+++ b/api/core/tools/utils/dataset_retriever/dataset_retriever_tool.py
@@ -1,4 +1,4 @@
-from typing import cast
+from typing import Any, cast
 
 from pydantic import BaseModel, Field
 from sqlalchemy import select
@@ -39,7 +39,7 @@ class DatasetRetrieverTool(DatasetRetrieverBaseTool):
     dataset_id: str
     user_id: str | None = None
     retrieve_config: DatasetRetrieveConfigEntity
-    inputs: dict
+    inputs: dict[str, Any]
 
     @classmethod
     def from_dataset(cls, dataset: Dataset, **kwargs):
diff --git a/api/core/tools/workflow_as_tool/tool.py b/api/core/tools/workflow_as_tool/tool.py
index 552fbab1a4..7c4f8ee03a 100644
--- a/api/core/tools/workflow_as_tool/tool.py
+++ b/api/core/tools/workflow_as_tool/tool.py
@@ -277,7 +277,7 @@ class WorkflowTool(Tool):
             session.expunge(app)
             return app
 
-    def _transform_args(self, tool_parameters: dict[str, Any]) -> tuple[dict[str, Any], list[dict[str, Any]]]:
+    def _transform_args(self, tool_parameters: dict[str, Any]) -> tuple[dict[str, Any], list[dict[str, str | None]]]:
         """
         transform the tool parameters
 
@@ -355,7 +355,7 @@ class WorkflowTool(Tool):
 
         return result, files
 
-    def _update_file_mapping(self, file_dict: dict[str, Any]):
+    def _update_file_mapping(self, file_dict: dict[str, Any]) -> dict[str, Any]:
         file_id = resolve_file_record_id(file_dict.get("reference") or file_dict.get("related_id"))
         transfer_method = FileTransferMethod.value_of(file_dict.get("transfer_method"))
         match transfer_method: