diff --git a/src/google/adk/tools/openapi_tool/openapi_spec_parser/tool_auth_handler.py b/src/google/adk/tools/openapi_tool/openapi_spec_parser/tool_auth_handler.py
index cdce222..71e760e 100644
--- a/src/google/adk/tools/openapi_tool/openapi_spec_parser/tool_auth_handler.py
+++ b/src/google/adk/tools/openapi_tool/openapi_spec_parser/tool_auth_handler.py
@@ -185,7 +185,7 @@ class ToolAuthHandler:
       )
       self.credential_store.store_credential(key, auth_credential)
 
-  def _reqeust_credential(self) -> None:
+  def _request_credential(self) -> None:
     """Handles the case where an OpenID Connect or OAuth2 authentication request is needed."""
     if self.auth_scheme.type_ in (
         AuthSchemeType.openIdConnect,
@@ -223,11 +223,6 @@ class ToolAuthHandler:
         )
     )
 
-  def _request_credential(self, auth_config: AuthConfig):
-    if not self.tool_context:
-      return
-    self.tool_context.request_credential(auth_config)
-
   def prepare_auth_credentials(
       self,
   ) -> AuthPreparationResult:
@@ -260,7 +255,7 @@ class ToolAuthHandler:
           auth_credential=exchanged_credential,
       )
     else:
-      self._reqeust_credential()
+      self._request_credential()
       return AuthPreparationResult(
           state="pending",
           auth_scheme=self.auth_scheme,
diff --git a/tests/unittests/flows/llm_flows/test_functions_request_euc.py b/tests/unittests/flows/llm_flows/test_functions_request_euc.py
index 3f5abca..3d5fcae 100644
--- a/tests/unittests/flows/llm_flows/test_functions_request_euc.py
+++ b/tests/unittests/flows/llm_flows/test_functions_request_euc.py
@@ -136,13 +136,13 @@ def test_function_request_euc():
   function_call_ids = list(events[2].actions.requested_auth_configs.keys())
 
   for idx, part in enumerate(events[1].content.parts):
-    reqeust_euc_function_call = part.function_call
-    assert reqeust_euc_function_call is not None
+    request_euc_function_call = part.function_call
+    assert request_euc_function_call is not None
     assert (
-        reqeust_euc_function_call.name
+        request_euc_function_call.name
         == functions.REQUEST_EUC_FUNCTION_CALL_NAME
     )
-    args = AuthToolArguments.model_validate(reqeust_euc_function_call.args)
+    args = AuthToolArguments.model_validate(request_euc_function_call.args)
 
     assert args.function_call_id == function_call_ids[idx]
     args.auth_config.auth_scheme.model_extra.clear()
@@ -336,8 +336,8 @@ def test_function_get_auth_response():
   )
 
   assert function_invoked == 4
-  reqeust = mock_model.requests[-1]
-  content = reqeust.contents[-1]
+  request = mock_model.requests[-1]
+  content = request.contents[-1]
   parts = content.parts
   assert len(parts) == 2
   assert parts[0].function_response.name == 'call_external_api1'
diff --git a/tests/unittests/flows/llm_flows/test_functions_simple.py b/tests/unittests/flows/llm_flows/test_functions_simple.py
index 7ddb124..2c5ef9b 100644
--- a/tests/unittests/flows/llm_flows/test_functions_simple.py
+++ b/tests/unittests/flows/llm_flows/test_functions_simple.py
@@ -247,8 +247,8 @@ def test_function_call_id():
   agent = Agent(name='root_agent', model=mock_model, tools=[increase_by_one])
   runner = testing_utils.InMemoryRunner(agent)
   events = runner.run('test')
-  for reqeust in mock_model.requests:
-    for content in reqeust.contents:
+  for request in mock_model.requests:
+    for content in request.contents:
       for part in content.parts:
         if part.function_call:
           assert part.function_call.id is None